Description:TECHNICAL FIELD
The present disclosure relates to the fields of Accessibility, Mobility Solutions for the Handicapped or Disabled, and Wheelchair Design; and more particularly, to a motorized electric wheelchair attachment capable of attaching to the wheelchair to enhance mobility capability.
BACKGROUND OF THE INVENTION
Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
A wheelchair is a mobility device designed to assist people with mobility impairments or disabilities in moving around independently. It typically consists of a seat, backrest, footrests, and two large wheels on the sides, with smaller casters or wheels at the front. The user can manually propel the wheelchair by turning the large rear wheels with their hands, or it can be pushed by a caregiver or attendant.
There are various types of wheelchairs available, including manual wheelchairs, which require physical effort to operate, and power wheelchairs, which are powered by batteries and controlled using a joystick or other input device. Some wheelchairs are designed for specific needs, such as sports wheelchairs for athletes, beach wheelchairs for use on sand, or standing wheelchairs for users who want to stand up or change positions.
Wheelchairs can greatly improve the quality of life for people with mobility impairments by providing them with the ability to move around independently, participate in activities, and access places that may not be accessible otherwise. However, it's important to choose a wheelchair that fits the user properly, is comfortable and safe, and meets their specific needs and lifestyle.
While wheelchairs can greatly improve the mobility and independence of people with disabilities, there are several problems associated with existing wheelchairs that can limit their effectiveness or pose challenges for users. Some common issues with existing wheelchairs include:
Poor fit: Wheelchairs that are not properly fitted to the user can cause discomfort, pain, and pressure sores, and may also be difficult to maneuver.
Limited mobility: Traditional wheelchairs can be difficult to use on rough or uneven terrain, and may not be able to handle inclines or stairs, which can limit the user's ability to access certain places or participate in certain activities.
Heavyweight: Some wheelchairs can be heavy and cumbersome, making them difficult to transport or maneuver, especially for users who lack upper body strength.
Lack of customization: Many wheelchairs are mass-produced and may not offer the level of customization that some users require to accommodate their individual needs or preferences.
Stigma: The use of a wheelchair can still carry a social stigma, which can make some users feel self-conscious or uncomfortable in public.
High cost: Wheelchairs can be expensive, making them inaccessible to some users who may not be able to afford them.
Addressing these issues requires innovative approaches to wheelchair design and manufacturing, as well as greater awareness and understanding of the needs and experiences of wheelchair users. Some solutions include the use of lightweight materials, adjustable seating, and positioning, and the development of specialized wheelchairs for different terrains and activities. Additionally, efforts to reduce stigma and promote inclusivity and accessibility can help to create a more supportive environment for wheelchair users.
There are several reasons why a motorized attachment to a wheelchair may be necessary or beneficial for some users:
Increased mobility: A motorized attachment, such as an electric power assist or add-on motor, can provide additional propulsion to a manual wheelchair, making it easier for users to navigate long distances or challenging terrain.
Reduced fatigue: For users with limited upper body strength or mobility, a motorized attachment can reduce the physical exertion required to operate the wheelchair, allowing them to conserve energy and avoid fatigue.
Improved independence: With a motorized attachment, users can operate their wheelchairs independently, without relying on the assistance of caregivers or attendants.
Increased accessibility: Motorized attachments can enable users to access places and participate in activities that may be difficult or impossible with a manual wheelchair, such as uphill slopes or rough terrain.
Flexibility: A motorized attachment can be added or removed as needed, providing users with the flexibility to choose between manual or motorized operation depending on their needs and preferences.
Many of the inventions have been previously reported to provide a motorized detachable assembly to motorize the wheelchair. US20200000658 mentions a detachable assembly having a long platform with wheels at the front and rear connected to the chassis. A trolling wheel is provided below the chassis on the front side to support the assembly when idle and will be lifted along with the wheelchair when assembled with the wheelchair. A handlebar is connected to the front wheel to provide direction to the assembly. However, the disclosed invention is bulky in design and consumes a lot of space while in use and during storage as well. Also, a lot of precision and training would be required for a new user to use it with the wheelchair. Also, the cost and weight of the assembly will be higher due to the use of more components. In addition, the turning radius of the total system after assembly with the wheelchair will be higher as the rear wheel comes beyond the rear wheel of the wheelchair.
US20020088657 discloses a steering mechanism for a wheelchair consisting of a steering wheel affixed to a shaft that is connected to a motor and combinedly mounted on a rectangular solid platform which will be connected to the wheelchair by a plurality of pre-existing wheelchair cylindrical rods located at a rear portion of a wheelchair. The said steering mechanism on a solid platform needs to be retrofitted to the wheelchair and will need a trained person to do so. Also, the steering mechanism mentions providing motion to the wheelchair but doesn’t mention how the wheelchair is turned left or right using the said steering mechanism. The disclosed system requires either the user to get down, assemble the steering mechanism to the wheelchair, or require another person to assemble the steering mechanism.
US20040000440 mentions a powered propulsion apparatus comprising of a chassis with a front wheel steerable using a handlebar and two rear wheels. The disclosed invention mentions the mounting of the wheelchair on the chassis such that the complete load bear by the front wheel and two rear wheels of the apparatus. Due to the complexity of use, users may need to be trained to use the apparatus and also due to the higher number of parts in the apparatus, the cost and weight of the apparatus will increase. Also, the apparatus will be difficult to store due to its big space-consuming device.
Thus, there is the requirement for a motorized attachment that can greatly enhance the mobility and independence of wheelchair users, providing them with greater freedom and flexibility to navigate their environment and participate in a wide range of activities with ease without the need for training and should be easy to handle and store.
As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
In some embodiments, the numerical parameters set forth in the written description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
The recitation of ranges of values herein is merely intended to serve as a shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
OBJECTS OF THE INVENTION
The principal object of the present disclosure is to provide an electric motor-operated wheelchair attachment capable of attaching to any wheelchair enhancing mobility capability.
It is another object of the present disclosure is to provide a motorized electric wheelchair attachment capable of standing freely when not attached to the wheelchair.
Yet another objective of the present disclosure is to provide a motorized electric wheelchair attachment with easy attachment and detachment to the wheelchair.
Yet another objective of the present disclosure is to provide a motorized electric wheelchair attachment with a smaller turning radius.
Yet another objective of the present disclosure is to provide a motorized electric wheelchair attachment with fewer components such that it’ll be easier to store and handle.
Still, another objective of the present disclosure is to provide an angle adjustment mechanism that can be easily changed by the user sitting in a wheelchair.
SUMMARY
This summary is provided to introduce a selection of concepts in a simplified form to be further described below in the Detailed Description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
Accordingly, in an aspect, an electric motor-operated wheelchair attachment is developed capable of attaching to any wheelchair enhancing mobility capability.
In an aspect, a hub electric motor powered wheel is attached to the chassis of the wheelchair attachment with a handlebar to guide the direction of motion.
In an aspect, a support stand with support stand wheels is provided to freely stand the electric motor-operated wheelchair attachment when not in use and can be moved easily by the user while attaching or detaching it from the wheelchair.
In an aspect, an interlocking clamp is connected to the connecting arm which is further connected to the angle adjustment mechanism. The angle of the connecting arm can be unlocked by pressing an angle unlocking lever.
In an aspect, a removable battery is provided which can be replaced from the battery compartment at the front of the electric motor-operated wheelchair attachment.
In an aspect, a disk brake assembly is attached to the wheel capable of stopping the motion by pressing the brake lever.
To further clarify the advantages and features of the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof, which are illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope. The invention will be described and explained with additional specificity and detail in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
In the figures, similar components and/or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label with a second label that distinguishes among the similar components. If only the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label.
FIG. 1 illustrates a side view of the motorized electric wheelchair attachment in accordance with an embodiment of the present invention.
FIG. 2 illustrates a front view of the motorized electric wheelchair attachment in accordance with an embodiment of the present invention.
FIG. 3 illustrates an isometric view of the motorized electric wheelchair attachment in accordance with an embodiment of the present invention.
FIG. 4 illustrates the battery and battery compartment unit of the motorized electric wheelchair attachment in accordance with an embodiment of the present invention.
FIG. 5 illustrates the assembly of the motorized electric wheelchair attachment with the wheelchair in accordance with an embodiment of the present invention.
Further, skilled artisans will appreciate that elements in the drawings are illustrated for simplicity and may not have been necessarily been drawn to scale. For example, the flow charts illustrate the method in terms of the most prominent steps involved to help to improve understanding of aspects of the present invention. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.
DETAILED DESCRIPTION
The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. These exemplary embodiments are provided only for illustrative purposes and so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. The invention disclosed may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Various modifications will be readily apparent to persons skilled in the art. The general principles defined herein may be applied to other embodiments and applications without departing from the spirit and scope of the invention. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure). Also, the terminology and phraseology used is for the purpose of describing exemplary embodiments and should not be considered limiting. Thus, the present invention is to be accorded the widest scope encompassing numerous alternatives, modifications and equivalents consistent with the principles and features disclosed. For purpose of clarity, details relating to technical material that is known in the technical fields related to the invention have not been described in detail so as not to unnecessarily obscure the present invention.
The use of any and all examples, or exemplary language (e.g., “such as”) provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non – claimed element essential to the practice of the invention.
Accordingly, in an aspect, the present invention provides a motorized electric wheelchair attachment capable of attaching to the wheelchair to enhance the mobility capability.
In an aspect, various parts of the motorized electric wheelchair attachment (100) are:
101. Chassis
102. Axle
103. Front Wheel
104. Support Stand
105. Handlebar
106. Angle unlocking lever
107. Brake Lever
108. Disc brake assembly
109. Angle adjustment mechanism
110. Connecting arm
111. Interlocking Clamp
112. Front Outside Body Panel
113. Removable Battery
114. Battery Compartment
115. Headlight module
116. Control Console
117. Threaded Locking Knob
118. Support Stand Wheels
119. Wheelchair
120. Wheelchair Front Structure
In an embodiment, the motorized electric wheelchair attachment comprises a chassis (101) made of metal acting as a main structural part for the attachment. The chassis (101) is provided with an inverted U shape base holding an axle (102) which holds a front wheel (103) in place to provide mobility where the front wheel (103) is fixed on an axle (102) to the chassis (101) using fasteners. Fasteners are devices used to join or secure two or more objects together. Common types of fasteners include bolts, screws, nuts, rivets, nails, and washers. Fasteners can be made from a variety of materials, including steel, stainless steel, aluminum, brass, and plastic. They come in different sizes, shapes, and designs to suit specific applications. Fasteners are critical in ensuring the safety, durability, and reliability of structures and products, making them an integral part of modern engineering and manufacturing processes.
The front wheel (103) is an electric hub motor wheel which eliminates the need for a separate motor and drive system, as the motor is directly integrated into the wheel itself thus making the motorized electric wheelchair attachment more compact, lightweight, and efficient. The front wheel (103) is fitted with a disc brake assembly (108) used to stop the motion of the front wheel (103). A disc brake assembly is a type of braking system used in vehicles, which consists of a rotor, brake pads, caliper, and various other components. When the brake pedal is pressed, hydraulic pressure is applied to the caliper, causing the brake pads to press against the rotor. This friction slows down and stops the rotation of the wheel. The rotor is a flat, circular disc that is attached to the wheel hub and rotates along with the wheel. The brake pads are positioned on either side of the rotor and are designed to grip the surface of the rotor when the brakes are applied. The caliper, which is mounted on the wheel assembly, houses the brake pads and piston that compresses the pads against the rotor. Disc brake assemblies are commonly used in modern vehicles because they provide better-stopping power, more consistent performance, and are less prone to fading than traditional drum brake systems. They also tend to generate less heat and wear more slowly, reducing the need for maintenance and replacement.
The chassis (101) is attached with a handlebar (105) for pointing the front wheel (103) of the motorized electric wheelchair attachment at the direction in which the motorized electric wheelchair attachment, and a wheelchair connected thereto, will travel. The handlebar (105) allows the user to steer the direction of travel of the motorized electric wheelchair attachment and connected wheelchair. The handlebars are positioned in front of and within reach of the user, and pushing them forward increases the angle between the front unit and the chassis. This design improves maneuverability and accessibility for users of wheelchairs. A brake lever (107) is mounted on the handlebar (105) which is connected to the disk brake assembly (108) via a brake cable thus enabling the wheel to stop when the brake lever (107) is pressed. A brake cable is a type of cable used to transmit force from a brake lever or pedal to the brake mechanism, activating the brakes on a bicycle, motorcycle, or other vehicle. The cable is usually made of steel wire with a plastic coating to protect it from the elements and reduce friction. In a typical bicycle brake system, a brake cable runs from the brake lever on the handlebar to the brake caliper or brake pad located near the rim of the wheel. When the brake lever is squeezed, it pulls on the brake cable, which in turn activates the brake mechanism, slowing down or stopping the wheel.
In an embodiment, a support stand (104) is attached to the lug of the chassis (101) using fasteners which enables the motorized electric wheelchair attachment to stand freely when detached from the wheelchair. The support stand (104) is provided with a pair of wheels (118) to make it easier for the user to handle the motorized electric wheelchair attachment and move while attaching it to the wheelchair. While the motorized electric wheelchair attachment is attached to the wheelchair is used, the support stand (104) lifts up with the change in the angle of the attachment with respect to the wheelchair thus having enough ground clearance to not get in contact with the road or ground.
In an embodiment, an angle adjustment mechanism (109) is attached to the chassis (101) which holds a connecting arm (110) that has a rotary motion with respect to the fixed angle adjustment mechanism (109). The angle adjustment mechanism (109) normally keeps the position of the connecting arm (110) locked and can be unlocked by pressing the angle unlocking lever (106) located on the handlebar (105) where the angle unlocking lever (106) controls the locking mechanism in the angle adjustment mechanism (109) using a connected cable. Both ends of the connecting arm (110) are fitted with a pair of interlocking clamps (111) which can be clamped to the wheelchair front structure thus connecting the motorized electric wheelchair attachment to the wheelchair such that forward force is applied onto the chassis by the front wheel (103), is conveyed to the wheelchair by the interlocking mechanism, thereby propelling it forward. The assembly of the angle adjustment mechanism (109), connecting arm (110), and interlocking clamps (111) is combinedly and called the interlocking mechanism. A clamp is a mechanical device used to secure or hold objects tightly together to prevent movement or separation. Clamps come in many shapes and sizes and are used for various applications. Common types of clamps include C-clamps, bar clamps, pipe clamps, spring clamps, and toggle clamps. Each type of clamp has a specific design and features that make it suitable for different tasks. Clamps work by applying pressure to the object or objects being held together. Some clamps use a screw mechanism to tighten the jaws, while others use a lever or spring mechanism. The jaws of the clamp are typically lined with rubber or other materials to prevent damage to the object being held. Clamps are essential tools in many industries, providing a secure and stable way to hold objects during assembly and use. They are easy to use and versatile, making them a valuable addition to any workshop or toolbox.
The chassis (101) is fitted with a front outside body panel (112) at the front outer side. A battery compartment (114) is attached to the chassis (101) and can be accessed by opening the front outside body panel (112). The motorized electric wheelchair attachment is provided with a removable battery (113) arrangement. A removable battery (113) can be easily removed and replaced, during the charge-discharge process. The front outside body panel (112) is provided with a hinged fitting that can be easily removed to get access to the battery unit. The purpose of a removable battery (113) in a cycle is to provide the user with the ability to extend the battery life of their device and to ensure that the motorized electric wheelchair attachment can be used even when the battery is low or has degraded over time. By having a removable battery, users can easily swap out a depleted battery for a fully charged one without having to wait for the battery to charge, which can be especially useful for users. Additionally, as batteries naturally degrade over time and lose capacity, having a removable battery (113) allows users to replace the battery when it is no longer holding a charge or performing as well as it used to.
The front outside body panel (112) is attached with a headlight module (115). The purpose of a headlight on a wheelchair is to improve visibility and safety, particularly in low-light conditions such as early morning or evening hours. This can be particularly important for wheelchair users who may be navigating outdoor areas or streets with limited lighting. The front wheel (103) and the headlight module (115) are controlled using a control console (116). The battery used to power the motorized electric wheelchair attachment can be 12V/24V/48V as per the requirement of the device and the power supply to various parts are controlled by the control console (116). The control console (116) has provision for forward and backward motion of the front wheel (103) thus making it easier for the user to use the motorized electric wheelchair attachment while attaching to the wheelchair and during motion.
While connecting or attaching the motorized electric wheelchair attachment, the angle unlocking lever (106) is pressed to unlock the connecting arm (110) and positioned in such a manner that the interlocking clamps (111) reach to the wheelchair front structure to clamp on and then released to lock the connecting arm position. Once the interlocking clamps (111) are clamped to the wheelchair front structure, the angle unlocking lever (106) is pressed to unlock the connecting arm (110) and simultaneously the motorized electric wheelchair attachment is pulled towards the wheelchair such that the front castor wheels of the wheelchair and support stand (104) is lifted up thus forming a tricycle and then the angle unlocking lever (106) is released to lock the position of the connecting arm. In addition, the angle adjustment mechanism (109) is provided with a threaded locking knob (117) which can be used to mechanically lock the position of the connecting arm (110) once the motorized electric wheelchair attachment is attached to the wheelchair in a tricycle position. This will ensure the fixed position of the connecting arm (110) in the event of braking or pressing the clutch mistakenly during motion thus adding additional safety to the device.
It should be apparent to those skilled in the art that many more modifications besides those already described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the spirit of the appended claims. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms “comprises” and “comprising” should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C ….and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the appended claims.
While embodiments of the present disclosure have been illustrated and described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the disclosure, as described in the claims.
, C , Claims:WE CLAIM:
1. A motorized electric wheelchair attachment (100), comprising:
a chassis (101) with an inverted U-shaped base;
a front wheel (103);
an axle (102) functionally connecting the front wheel (103) to the chassis (101);
a support stand (104) fixed to the chassis (101) using fasteners to enable the motorized electric wheelchair attachment (100) to stand independently;
a pair of wheels (118) fixed on the base ends of the support stand (104) for easy movement of the motorized electric wheelchair attachment (100) by the user;
a handlebar (105) attached to the top of the chassis (101) for pointing the front wheel (103) of the motorized electric wheelchair attachment in the direction of travel;
an angle unlocking lever (106) fixed on one side of the handlebar (105);
a brake lever (107) fixed on one side of the handlebar (105);
a disc brake assembly (108) attached to the front wheel (103) and connected to the brake lever (107) by a cable;
an angle adjustment mechanism (109) attached to the chassis (101) having a threaded locking knob (117);
a connecting arm (110) passing through and having a rotary motion with respect to the angle adjustment mechanism (109) where the position of the connecting arm (110) is normally locked and unlocked only upon pressing the angle unlocking lever (106) connected by a cable;
a pair of interlocking clamps (111) fixed on both ends of the connecting arm (110) to clamp to the wheelchair front structure such that forward force applied onto the chassis by the front wheel (103), is conveyed to the wheelchair, thereby propelling it forward;
a front outside body panel (112) mounted on the chassis (101);
a battery compartment fixed on the chassis (101) and accessible by opening the front outside body panel (112);
a headlight module (115) fixed on the front outside body panel (112); and
a control console (116) fixed on the handlebar (105) to control the forward and backward motion of the front wheel (103) and other instruments such as a headlight.
2. A motorized electric wheelchair attachment (100) as claimed in claim 1, wherein the front wheel (103) is an electric hub motor wheel.
3. A motorized electric wheelchair attachment (100) as claimed in claim 1, wherein the disc brake assembly (108) comprises the brake rotor disc, brake cable connection, and the brake calipers.
4. A motorized electric wheelchair attachment (100) as claimed in claim 1, wherein the front outside body panel (112) is provided with a hinged fitting that can be easily removed to get access to the battery unit.
5. A motorized electric wheelchair attachment (100) as claimed in claim 1, wherein the battery compartment (114) houses removable batteries that can be replaced.
6. A method of attaching the motorized electric wheelchair attachment (100) to the wheelchair having a seat frame with foot support and front castor wheels, comprising the steps of:
pulling the motorized electric wheelchair attachment (100) near the wheelchair by the user;
pressing the angle unlocking lever (106) to unlock the rotation of the connecting arm (110) with respect to the angle adjustment mechanism (109);
pulling up the interlocking clamps (111) to reach the wheelchair front structure;
releasing the angle unlocking lever (106) to lock the connecting arm (110) position;
clamping the interlocking clamps (111) to the wheelchair front structure;
pressing the angle unlocking lever (106) to unlock the rotation of the connecting arm (110);
inclining the wheelchair backward so as to raise said foot support and front castor wheel of the wheelchair and the support stand (104) of the motorized electric wheelchair attachment (100) simultaneously;
releasing the angle unlocking lever (106) to lock the rotation of the connecting arm (110) position; and
tightening the threaded locking knob (117) of the angle unlocking lever (106) to ensure the locking of the connecting arm (110) position.
7. The method as claimed in claim 6, wherein the angle adjustment mechanism (109) is normally locked restricting the rotary motion of the connecting arm (110) and the rotation can only be unlocked by pressing the angle unlocking lever (106).