Claims:
CLAIMS
1. What is claimed is:

Intelligent brake bleeding machine comprising of
a DC Motor (1),
a Vacuum Pump (2),
a Sensor Vacuum & Air Flow (3),
a Vacuum Tank (4),
a Fluid Tank (5),
a Solenoid Valve (6),
a second Solenoid Valve (7),
a Sensor IR (8),
a Sensor Ultrasonic and Opto (9) and
a Micro controller (10),

characterized in that the Vacuum Pump (2) is connected to Vacuum tank (4) through sensor vacuum (3)

2. The brake bleeding machine as claimed in Claim 1 wherein the Vacuum Tank (4) is connected to the Fluid Tank (5) through the solenoid valve (6), (7).

3. The brake bleeding machine as claimed in Claim 1 wherein the Fluid Tank (5) is connected to Vehicle brake cylinder / Caliper bleed screw (not shown) through the solenoid valve (6) and (7) and the sensors (8) (9).

4. The brake bleeding machine as claimed in Claim 1 and working thereof wherein the brake bleeding machine is connected at the bleeding port of wheels / Clutch Slave cylinder.

5. The brake bleeding machine as claimed in Claim 1 and working thereof wherein the brake bleeding machine generates vacuum which sucks the brake fluid along with air from the hydraulic brake/ clutch circuit.

6. The brake bleeding machine as claimed in Claim 1 and working thereof wherein when bubble passes through the sensor area (3), the brake bleeding machine, once connected at the bleeding port of wheels / Clutch Slave cylinder, sends the electrical signal to microcontroller (10) regarding the presence and quantity of air bubbles.

7. The brake bleeding machine as claimed in Claim 1 and working thereof wherein When the sensor (3) sends the number of air bubbles signal to microcontroller (10), accordingly microcontroller (10) indicate the completion of bleeding and stop the process.
.
8. The brake bleeding machine as claimed in Claim 1 and working thereof wherein during bleeding the brake bleeding machine can count the air bubble content at draw fluid through the ultrasonic and opto sensors (9) are implanted on fluid tube.

9. The brake bleeding machine as claimed in Claim 1 and working thereof wherein after completion of brake/clutch bleeding, the respective original bleed screw needs to be tightened.

Dated this day of 10th December 2018
N. Surya Senthil – IN/PA-736
For JUS MAXIMA LAW OFFICES
To : (Agent for Applicant)
The Controller of Patents
Patent Office in Chennai

, Description:

FORM 2
THE PATENT ACT 1970
(39 of 1970) &
The Patents Rules, 2003

COMPLETE SPECIFICATION
(Section 10 and rule 13)

1. TITLE OF THE INVENTION: INTELLIGENT BRAKE BLEEDING MACHINE

2. APPLICANT (S)

(a) NAME: Brakes India Private Limited

(b) NATIONALITY: INDIAN NATIONAL

(c) ADDRESS: Brakes India Private Limited, MTH Road, Padi, Chennai-600050

3. PREAMBLE TO THE DESCRIPTION

COMPLETE SPECIFICATION

The following specification describes the invention.

TITLE
INTELLIGENT BRAKE BLEEDING MACHINE

FIELD OF THE INVENTION

This invention relates to mechanical engineering, specifically automobile engineering and relates to hydraulic brake and clutch circuit systems. This invention more specifically relates to an intelligent brake bleeding machine that can detect the air bubbles to understand the air bleeding completion of the hydraulic brake and clutch circuits of automobile or like vehicles.

BACKGROUND OF THE INVENTION

As is well known, air bubbles frequently are trapped in the fluid lines and cylinders of a hydraulic brake system whenever the brake fluid is drained or replaced. Such trapped air must be removed to insure safe and effective braking operation. When working on hydraulic brakes of a conventional vehicle, it is necessary to bleed hydraulic fluid from the brake lines leading from the master cylinder to the wheel cylinders in order to get all of the air out of the brake lines. Entrapped air and foreign contaminants could impede the performance of hydraulic systems, particularly, the hydraulic brake systems of motor vehicles.

All the hydraulic brake & clutch actuation system of automobile works with Pascal law. So these hydraulic system must be air free.This is necessary because, while the brake fluid is an incompressible liquid, air bubbles are compressible gas and their presence in the brake system greatly reduces the hydraulic pressure that can be developed within the system. During brake fluid replacement or the hydraulic brake component repair/ replacement, atmospheric air ingress into the hydraulic circuit. Air bleeding must be done to make the hydraulic circuit air free.

Many methods and systems have been created for bleeding air entrapped in automotive hydraulic brake systems, ranging from gravity bleeding, one or two person systems using brake pedal or hand-operated vacuum pumps to create pressure and suction, to replacing standard bleeder valves with check valves. With air in one or more of the brake lines, considerable effort is spent first in compressing the air before any movement of the braking components occurs. This causes the brake pedal to be spongy, i.e. the pedal goes part way down without noticeable effect because air in the hydraulic line is being compressed.

The standard technique for bleeding brake lines is to attach a hose to the bleed fitting of the wheel cylinder. One person gets inside the vehicle to work the brake pedal and a second person gets under the car to open and close the bleed fitting, which is a valved connection. The person under the car opens the bleed fitting valve and yells to the person in the car to depress the brake pedal. The second person puts the end of the hose in a container and watches the hose end. When fluid quits exiting from the hose end, the second person closes the bleed fitting and yells to the first person to release the brake pedal. If air and brake fluid were seen by the second person exiting from the hose, the process is repeated. The remaining brake lines are bled if the other wheel cylinders have been worked on or other brake lines are thought to have air in them.

It is recommended by vehicle manufacturers that the brake fluid be periodically flushed from the system. This is done by pumping the old brake fluid from the master cylinder adding new brake fluid to the master cylinder. The old brake fluid is easily detectable because it is dark while new brake fluid is clear. Thus, brake fluid emitting from the hose end is easily determined to be old or new.

The standard technique requires two people--one to depress and release the brake pedal on command and one to handle the hose, open and close the bleed fitting, tell the first person when to depress the brake pedal and also to see if any bubbles are coming out of the hose end. It has long been recognized as desirable to provide a tool allowing one person to bleed the brake lines. Typical tools allowing one person to bleed a brake line include a fitting for connection to the bleed fitting on the wheel cylinder and a check valve allowing brake fluid to pass out of the wheel cylinder in response to depression of the brake pedal and preventing back flow toward the wheel cylinder when the brake pedal is released.

Some of the prior art in this field reveal various improvements made over the years in the art, specifically in bleeding techniques.

US Patent Application No: US20120161420 discloses a master device for a closed hydraulic system of handlebar-steered vehicles includes a basic body and a pressure chamber in which, in the event of actuation of the master device in order to actuate a slave device, hydraulic fluid is placed under pressure. The master device includes a hydraulic line connecting element having a connecting piece for connecting a hydraulic line and a thread section for screwing into the basic body. An air bleed opening bleeds the hydraulic system. The hydraulic line connecting element and the basic body form a valve that closes the connection between the pressure chamber and the air bleed opening when the hydraulic line connecting element is fully screwed in to the basic body.

United States Patent 9243652 claims a de-aeration hydraulic circuit having application in a hydromechanical transmissions utilizes a hydraulic fluid reservoir to de-aerate hydraulic fluid. The circuit includes a high pressure side and a low pressure side having a bleed down valve therebetween, the opening of the bleed down valve causing fluid to flow from the high pressure side to the low pressure side and through a valve to the hydraulic fluid reservoir where the pressure drop causes gas that is entrained in the fluid to bubble out and vent from the atmospheric reservoir.

United States Patent 9897199 discloses a fitting clearance of a relief valve that functions as an air bleeding orifice. When a discharge pressure reaches a relief pressure so that the relief valve turns into a relief state, a spool is moved so as to limit flow-out of hydraulic oil through the fitting clearance. As a result, generation of air trapping is suppressed by air bleeding function of the relief valve in a closed state. Air in a discharge oil passage is discharged quickly in the initial period of the startup of an electric oil pump, thereby improving rise-up of discharge pressure. During normal pump operation in which the relief valve is held in a relief state, pressure loss due to flow out of the hydraulic oil from the fitting clearance is suppressed and consequently, an electric oil pump having substantially the same discharge performance as conventionally can be used.

United States Patent Application 20070163849 claims a hydraulic vehicle brake equipped with a parking brake device, in particular for motor vehicles, includes a brake housing in which at least two hydraulic pressure chambers are provided, with a working pressure chamber that is delimited by a brake piston, and a lockable accumulator pressure chamber. A dual bleeder (2) is provided for simultaneously bleeding the two pressure chambers (7, 9). To this end, the dual bleeder (2) includes two elements, a bleeder sleeve (30) and a bleeder screw (31). The bleeder sleeve (30) cooperates with a first sealing seat (35), with the result that a hydraulic connection (29) between the two pressure chambers (7, 9) can be separated, while the bleeder screw (31) cooperates with a second sealing seat (36), with the result that at least one of the two pressure chambers (7, 9) can be connected to the atmosphere.

With the foregoing in mind, therefore it is the need of the hour is to develop an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems that offers huge benefits, a compact mechanism, reduces service costs, and provide a more efficient brake system.

The primary purpose of the present invention is to offer an intelligent brake bleeding machine, as an alternate to existing bleeding machines. By this way, huge cost benefit is accrued at customer end.

This invention eventually addresses the above and proves to be efficient and cost effective. These and other objects of the invention will become more apparent in the course of the ensuing specification and claims when taken with the accompanying drawings.

Further it will be apparent to those skilled in the art that the objects of this invention have been achieved by providing an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems which is unique in nature unlike existing bleeding systems as described in the above prior art. Various changes may be made in and without departing from the concept of the invention. Additional features of the invention will be described hereinafter that form the subject of the claims of the invention. Those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiment as a basis for designing and modifying other methods and structures for carrying out the same purpose of the present invention. Further, features of some stages disclosed in this application may be employed with features of other stages. Therefore, the scope of the invention is to be determined by the terminology of the following claims and the legal equivalents thereof.

OBJECTIVES OF THE INVENTION

This invention may be summarized, at least in part, with reference to its objects.

The foremost object of the present invention is to present an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems.

Another object of the present invention is to present an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems that can detect the air bubble to understand the air bleeding completion of automobile or like vehicles hydraulic brake & clutch circuit.

Another object of the present invention is to present an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems that is compact and easy to use.

Another object of the present invention is to present an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems that is cost effective as compared to existing brake bleeding systems.

A further object of the present invention is to present an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems that can be easily connected at the bleeding port of vehicles.

Additional objects, advantages and novel features of the invention will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following, or may be learned by practice of the invention.

SUMMARY OF THE INVENTION

The present invention embodies an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems. The present invention solves the longstanding and unresolved need for a bleeding machine that is structurally and functionally designed to provide rapid bleeding of hydraulic and clutch circuits while avoiding the disadvantages of known systems.
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The brake bleeding machine is actuated in a hydraulic brake system or clutch circuit system and facilitates sensing and indicating the level of fluid within a hydraulic brake system or clutch circuit system during bleeding operations. The apparatus is adapted to sense the air bubbles and to suck out the air bubbles by generating vacuum.

The present invention brake bleeding machine is based on the problem of developing a method for effectively bleeding a hydraulic brake system or clutch circuit system, wherein the air or gas load in the brake fluid or the inclusion of air bubbles can be reliably detected.

The entire brake bleeding machine comprises of the following parts:

1. DC Motor
2. Vacuum Pump
3. Sensor Vacuum & Air Flow
4. Vacuum Tank
5. Fluid Tank
6. Solenoid Valve
7. Solenoid Valve
8. Sensor IR
9. Sensor Ultrasonic and Opto
10. Micro controller

DESCRIPTION OF THE DRAWINGS

The advantages and features of the present invention will be more readily apparent by persons skilled in the art when considered in reference to the following description and when taken in conjunction with the accompanying drawings listed below

Figure 1 a cross sectional view illustrating the present invention brake bleeding machine parts.

Figure 2 is an overall view of the present invention brake bleeding machine.

Figure 3 is a detail view illustrating the working of the present invention brake bleeding machine.

Figure 4 is a detail view illustrating the working of the present invention brake bleeding machine.

DETAILED DESCRIPTION

The following description is presented to enable any person skilled in the art to make and use the invention, and is provided in the context of particular applications of the invention and their requirements. The present invention can be configured as follows:

The present invention is an intelligent brake bleeding machine for hydraulic brake and clutch circuit systems that offers huge benefits, a compact mechanism, reduces service costs, and provide a more efficient brake system.

Construction

As shown in Figure 1, the present invention components are as follows:

The entire brake bleeding machine assembly comprises of the following parts:

DC Motor (1)
Vacuum Pump (2)
Sensor Vacuum & Air Flow (3)
Vacuum Tank (4)
Fluid Tank (5)
Solenoid Valve (6)
Solenoid Valve (7)
Sensor IR (8)
Sensor Ultrasonic and Opto (9)
Micro controller (10)

The above parts are connected as follows:

The Vacuum Pump (2) is connected to Vacuum tank (4) through sensor vacuum (3), Vacuum Tank (4) is connected to Fluid Tank (5) through a solenoid valve (6), (7). Fluid Tank (5) is connected to Vehicle brake cylinder / Caliper bleed screw (not shown) through solenoid valve (6) and (7) and sensors (8) (9).

Working:
According to a preferred embodiment of the present invention, as shown in Figure 2, the present invention intelligent brake bleeding machine is connected at the bleeding port of wheels / Clutch Slave cylinder. The present invention intelligent brake bleeding machine then generates vacuum which sucks the brake fluid along with air from the hydraulic brake/ clutch circuit.

According to a preferred embodiment of the present invention, as shown in Figure 4, when bubble passes through the sensor area (3), as shown in Figure 3, present invention intelligent brake bleeding machine, once connected at the bleeding port of wheels / Clutch Slave cylinder, sends the electrical signal to microcontroller (10) regarding the presence and quantity of air bubbles. When the sensor (3) sends the number of air bubbles signal to microcontroller (10), accordingly microcontroller (10) indicate the completion of bleeding and stop the process.
.
According to a preferred embodiment of the present invention, as shown in Figure 4, during bleeding present invention intelligent brake bleeding machine can count the air bubble content at draw fluid through the ultrasonic and opto sensors (9) are implanted on fluid tube.

According to a preferred embodiment of the present invention, after completion of brake/clutch bleeding, the respective original bleed screw needs to be tightened.
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While there has been shown and described what is considered to be preferred embodiments of the invention, it will, of course, be understood that various modifications and changes in form or detail could readily be made without departing from the spirit of the invention. It is therefore intended that the invention be not limited to the exact forms described and illustrated, but should be constructed to cover all modifications that may fall within the scope of the appended claims.

It will be apparent to those skilled in the art that the objects of this invention have been achieved by providing the above invention. However various changes may be made in the structure of the invention without departing from the concept of the invention. Therefore, the scope of the invention is to be determined by the terminology of the following claims and the legal equivalents thereof.