DESC:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
The Patent Rules, 2003
COMPLETE SPECIFICATION
(See sections 10 & rule 13)
1. TITLE OF THE INVENTION
A STOP SYSTEM AND METHOD TO CONTROL AND PROVIDE SAFE OPENING OF THE TIP-UP SEAT
2. APPLICANT (S)
NAME NATIONALITY ADDRESS
BEML LIMITED IN BEML Soudha, No 23/1, 4th Main S.R. Nagar, Bengaluru- 560027, Karnataka, India.
3. PREAMBLE TO THE DESCRIPTION
COMPLETE SPECIFICATION

The following specification particularly describes the invention and the manner in which it is to be performed.

FIELD OF INVENTION:
[001] The present invention relates to the field of tip-up seat. The present invention in particular relates to a stop system and method to control and provide safe opening of the tip-up seat.
DESCRIPTION OF THE RELATED ART:
[002] The tip-up seat is cantilever type design. To open the tip-up seat we need to pull the sitting pan and closing of tip-up seat will happen automatically with use of coil spring/ gas spring and counter weight. The problem observed in the available tip-up seat is that the people/ commuters weight is first fully transferred to the tip-up mechanism and then to the wall on which tip-up seat is mounted. With frequent sitting and leaving the tip-up seat by people/ commuters, the tip-up mechanism gets weaker and seat starts to droop from its original position, causing people/ commuters slipping from seat-pan and discomfort when seated.
[003] Reference may be made to the following:
[004] Publication No. CN102476596 relates to a seat track slide device includes a pair of seat tracks. Each of the seat tracks has a lower rail, an upper rail, a lock lever, and a handle. Through manipulation of the handle, each seat track 3 is capable of switching the associated upper rail to a locking state and an unlocking state by selectively engaging and disengaging the lock lever with respect to the lower rail. In a support portion, projections of arm plates of the lock lever are engaged with the support holes of the side plates. The support portion pivotally supports the lock lever in the upper rail. The top plate of the upper rail has a stopper plate, that is held between stopper plates of arm plates of the lock lever.
[005] Publication No. CN208540937 relates to a locking mechanical system for official working back of chair seat synchronizing linkage, including base and two cranks, the base includes the bottom plate and follows the curb plate that extends the bottom plate both sides to set up separately in the both sides board outside, locking mechanical system includes stop pin and control lever, has seted up the second through -hole on one of them curb plate, and the stop pin is worn to establish in the second through -hole, and there is the spring bolt in the position department that the stop pin is close to the second through -hole along radial the extension, second through -hole intercommunication have with spring bolt complex locating hole, be equipped with on being close to the crank of second through -hole with spring bolt complex draw -in groove, under the initial condition, through control lever removal stop pin, the spring bolt is realized locking in inserting locating hole and another articulate draw -ingroove simultaneously, under the seat support rise state, remove the stop pin through the control lever for in the spring bolt tip inserted the locating hole, at this moment, the locking under the rise state was realized down along taking on the spring bolt of stop pin to the articulate that is close to the second through -hole. The utility model discloses simple structure, it is with low costs, convenient operation.
[006] Publication No. CN102476595 relates to a seat track slide device includes a pair of seat tracks. Each of the seat tracks has a lower rail, an upper rail, a lock lever, and a handle. Through manipulation of the handle, each seat track 3 is capable of switching the associated upper rail to a locking state and an unlocking state by selectively engaging and disengaging the lock lever with respect to the lower rail. Each lock lever is inserted into the corresponding upper rail and pivotally supported in the upper rail. An interlock support portion of the lock lever projects into an outer zone with respect to the front end of the upper rail. The interlock support portion of the lock lever supports an interlock support portion of the handle pivotally relative to each other. With the lock lever maintained in the locking state, the handle is allowed to pivot relative to the lock lever in the outer zone with respect to the front end of the upper rail against elastic force produced by a torsion coil spring arranged in the upper rail.
[007] Publication No. EP2738037 relates to seat tracks each include a lower rail, an upper rail, a lock lever, and a handle. When a handle is operated, the lock lever is set in a locking state or an unlocking state by engaging and disengaging the lock lever with and from lock recesses in the lower rail. The lock lever is supported pivotally with respect to the upper rail by pivot support portions, in which support holes in side plates of the upper rail and protrusions on arm plates of the lock lever are fitted together. A torsion coil spring, which interlocks the handle and the lock lever, includes a second stopper, which hooks on first stoppers provided on the arm plates (23) of the lock lever.
[008] Publication No. JP2004017772 relates to reduce opportunities for an occupant to feel a sense of incongruity when a seat body moves against a vehicle body at acceleration or at stop of the vehicle. The device restricts the tip-up release of a seat cushion locked in a tip-up state in a seat body on a slide rail, detects that the body is within a range of a predetermined seating slide and in a fixed state in the seating slide range fixed to the slide rail, and includes a tip-up release portion for allowing the tip-up release of the seat cushion only when it is detected that the body is in a fixed stated in the seating slide range.
[009] Publication No. GB191508167 relates to a frame for supporting hats under a tip-up seat is so mounted and connected to the seat that it is automatically moved downwards and backwards when the seat is tipped up. The motion may be transmitted to the hat supporting frame through toothed gearing, pins and slots, or the links and levers shown. The hat supporting frame is shown mounted in sockets on levers pivoted to arms and connected by links to the tip-up seat. The arms are loosely mounted on the seat pivots and are prevented from swinging backwards beyond the position shown by a stop on the side frame.
[010] Publication No. EP0636511 relates to a folding seat, with a restoring spring and a stop, which transmits the torque of a folded-down seat surface to the wall, in which a hinge has a mounting support attached to a wall, a bearing support fixed on the seat surface and a shaft. It is recommended that the shaft be mounted rotatably relative to the mounting support, that the stop be fastened on the shaft, that the bearing support be connected to the shaft via a securing pin which shears off in the event of an overload, and that the restoring spring act on the shaft and the mounting support. Alternatively, it is proposed that the shaft be mounted rotatably relative to the mounting support, that the stop be mounted on the shaft, that the bearing support be connected to the shaft by means of an overload coupling and that the restoring spring act on the shaft and the mounting support.
[011] Publication No. JP5214712 relates to a turning support which is easy in assembling because only the insertion-fitting of a support hole and a protrusion suffices to support a lock lever to an upper rail so as to be turnable, and to maintain the insertion-fitting of the support hole and the protrusion by using stopper plates. Accompanied by operations of mutually-interlocking handles, each seat track having a lower rail, the upper rail, the lock lever and the handle can bring the lock lever into a locked state or a lock-released state by making the lock lever engaged with and disengaged from the lower rail. The lock lever is supported to the upper rail so as to be turnable by a turn support in which the support holes of both side plates of the upper rail and the protrusions of both arm plates of the lock lever are mutually inserted and fit. At an upper plate of the upper rail 6, there is arranged a stopper plate interposed between the stopper plates which are arranged at both the arm plates of the lock lever.
[012] Publication No. WO2006059405 relates to a seat structure for a vehicle, comprising at least two seat bodies having seat cushions and allowing front parts to tip up from horizontal positions about rear parts and back rests and allowing upper parts to longitudinally tilt about lower parts. The seat bodies are longitudinally disposed on same slide rails, and allowed to move and stop at proper positions in the longitudinal direction. The both seat bodies and are so formed that the back rests and can be moved to roughly upright positions and the seat cushions and can be tipped up by an operation means, and the seat body on the front side can be moved forward (FR) by the seat body on the rear side.
[013] Publication No. WO2006059404 relates to a seat structure for a vehicle, comprising at least two seat bodies having seat cushions and allowing front parts to tip up from seated positions about rear parts and back rests and allowing upper parts to longitudinally tilt about lower parts. The seat bodies are longitudinally disposed on same slide rails, and allowed to move and stop at proper positions in the longitudinal direction. The both seat bodies and are so formed that the back rests and can be moved to roughly upright positions and the seat cushions and can be tipped up by an operation means, and the seat body on the front side can be moved forward (FR) by the seat body on the rear side.
[014] Publication No. JP2007245919 relates to certainly perform locking to the seating state and the lateral tip-up state, to certainly stop falling in the lateral tip-up state and to previously avoid generation of rattling and noise by vibration of a vehicle body. The lateral tip-up seat includes front and rear movable legs hinge-bonded to a frame of a seat cushion and capable of being folded; connection links having one end hinge-coupled to the front and rear fixing legs and the other end hinge-coupled to the movable legs respectively correspondingly, erecting the movable legs according to seating operation of the seat cushion and folding the movable legs according to lateral tip-up operation of the seat cushion; a lock mechanism provided with a lock spring for inserting a lock pin to pin holes of lock plates at the seating position and the lateral tip-up position; and a release mechanism for pulling/removing the lock pin from the pin holes in resistant to the lock spring.
[015] Thus, presently the opening of the tip-up seat is controlled by the tip-up mechanism only. As the tip-up mechanism to be provided within the seat, the load carrying capacity of the tip-up seat is limited. Any load higher than the limit of the tip-up mechanism withstanding load, the tip-up mechanism fails and seat droops. The tip-up mechanism has to be replaced to repair the tip-up seat.
[016] In order to overcome above listed prior art, the present invention aims to provide a stop system and method to control and provide safe opening of the tip-up seat. The stop mechanism to the tip-up seat will prevent the drooping of the seat, the opening angle of the seat can also be adjusted to the provide more comfort to people/ commuters, increases the load carrying capacity of the tip-up seat, increases the life of the tip-up mechanism and reduce maintenance cost of tip-up mechanism. Also, for the stop mechanism to function no effort/ lever required by the people/ commuters to control the opening of the seat and the stopping of the seat opening is controlled by contact of two stop brackets.
OBJECTS OF THE INVENTION:
[017] The principal object of the present invention is to provide a stop system and method to control and provide safe opening of the tip-up seat without effort/ no lever to function the stop mechanism.
[018] Another object of the present invention is to eliminate drooping of the tip-up seat & adjust the opening angle of the seat to provide more comfort to people/ commuters.
[019] Still another object of the present invention is to reduce the people/ commuters load on the tip-up mechanism and to increase life of the tip-mechanism.
[020] Yet another object of the present invention is to reduce maintenance cost of the tip-up mechanism.
SUMMARY OF THE INVENTION:
[021] The present invention relates to a stop system and method to control and provide safe opening of the tip-up seat. The stop mechanism consists of two brackets designed and contoured suitably to ensure correct opening and closing of tip-up seat without any obstruction. One bracket fixed to the wall and another bracket fixed to the tip-up seat. The two brackets to be fixed between the tip-up seat and the wall. The stop mechanism also reduces the load applied to the tip-up mechanism when people sit on the tip-up seat.
BREIF DESCRIPTION OF THE INVENTION
[022] It is to be noted, however, that the appended drawings illustrate only typical embodiments of this invention and are therefore not to be considered for limiting of its scope, for the invention may admit to other equally effective embodiments.
[023] Fig. 1 shows tie-up seat without stop mechanism.
[024] Fig. 2 shows tip-up seat with stop mechanism.
[025] Fig. 3 shows close view of stop mechanism.
DETAILED DESCRIPTION OF THE INVENTION:
[026] The present invention provides a stop system and method to control and provide safe opening of the tip-up seat. The stop mechanism consists of two brackets designed and contoured suitably to ensure correct opening and closing of tip-up seat without any obstruction. One bracket fixed to the wall and another bracket fixed to the tip-up seat. The two brackets to be fixed between the tip-up seat and the wall. The stop mechanism also reduces the load applied to the tip-up mechanism when people sit on the tip-up seat. Fig. 1 shows tie-up seat without stop mechanism. Fig. 2 shows Tip-up seat with stop mechanism and Fig. 3 shows close view of stop mechanism.
[027] In the present invention the tip-up seat load carrying capacity is increased. The drooping of the tip-up seat is eliminated & the opening angle of the seat can be adjusted to provide more comfort to people/ commuters. The people load to the tip-up mechanism is reduced and life of the tip-up mechanism is increased. Maintenance cost of the tip-up mechanism is reduced.
[028] In the present invention the tip-up seat will not slide and is fixed to the wall in cantilever type. It is a stop mechanism for a tip-up seat to eliminate drooping of the tip-up seat, improve the comfort of the sitting people, reduce the load on the tip-up mechanism, increase the life of the tip-up mechanism and reduce maintenance cost of the tip-up seat. The stop mechanism to function no effort/ lever required by the people/ commuters to control the opening of the seat and the stopping of the seat opening is controlled by contact of two stop brackets.
[029] This is a stop mechanism for a tip-up seat to eliminate drooping of the tip-up seat, improve the comfort of the sitting people, reduce the load on the tip-up mechanism, increase the life of the tip-up mechanism and reduce maintenance cost of the tip-up seat. For the stop mechanism to function no effort/ lever required by the people/ commuters to control the opening of the seat and the stopping of the seat opening is controlled by contact of two stop brackets.
[030] The tip-up seat will be used in place where limited place available and it will be always in closed condition. When person needs to sit has to pull the sitting pan and the sitting pan rotates about the tip-up mechanism axis. Generally, tip-up mechanism is by spring or dead weight. This spring and dead weight mechanism over a period will lose its integrity and the tip-up seat will droop which makes the tip-up seat not suitable for sitting. In the present invention a stop mechanism bracket is attached to the external side of the sitting pan and a matting stop mechanism bracket is attached to the wall. With this stop bracket when the sitting pan is pulled to open, the stop bracket will resist the load transferred to the tip-up mechanism and make the tip-up seat safer for sitting.
[031] In the present invention the reason for the drooping in the tip-up seat is analysed and it is necessary to provide a stop mechanism bracket to prevent the tip-seat from drooping and to restrict the load on the tip-up mechanism.
[032] The stop mechanism bracket is shaped as L. One stop mechanism bracket is fixed to the wall and another stop mechanism bracket is fixed to the tip-up seat. When the sitting pan is pulled to open, the stop mechanism bracket in the tip-up seat will make contact with the stop mechanism bracket in the wall.
[033] Numerous modifications and adaptations of the system of the present invention will be apparent to those skilled in the art, and thus it is intended by the appended claims to cover all such modifications and adaptations which fall within the true spirit and scope of this invention. ,CLAIMS:WE CLAIM:
1. A stop system and method to control and provide safe opening of the tip-up seat comprises two brackets to ensure correct opening and closing of tip-up seat without any obstruction characterized in that one bracket fixed to the wall and another bracket fixed to the tip-up seat and stop mechanism reduces the load applied to the tip-up mechanism when people sit on the tip-up seat.
2. The stop system and method to control and provide safe opening of the tip-up seat, as claimed in claim 1, wherein the stop mechanism bracket is attached to the external side of the sitting pan and a matting stop mechanism bracket is attached to the wall.
3. The stop system and method to control and provide safe opening of the tip-up seat, as claimed in claim 1, wherein the tip-up seat will not slide and is fixed to the wall in cantilever type which is a stop mechanism for a tip-up seat to eliminate drooping of the tip-up seat, improves the comfort of the sitting people, reduces the load on the tip-up mechanism, increase the life of the tip-up mechanism and reduce maintenance cost of the tip-up seat.
4. The stop system and method to control and provide safe opening of the tip-up seat, as claimed in claim 1, wherein the stop mechanism for a tip-up seat eliminates drooping of the tip-up seat, improves the comfort of the sitting people, reduce the load on the tip-up mechanism, increase the life of the tip-up mechanism and reduce maintenance cost of the tip-up seat.
5. The stop system and method to control and provide safe opening of the tip-up seat, as claimed in claim 1, wherein when person needs to sit, pulls the sitting pan and the sitting pan rotates about the tip-up mechanism axis, this spring and dead weight mechanism over a period will lose its integrity and the tip-up seat will droop which makes the tip-up seat not suitable for sitting and with stop bracket when the sitting pan is pulled to open, the stop bracket will resist the load transferred to the tip-up mechanism and make the tip-up seat safer for sitting.