FIELD OF INVENTION
The present invention relates to a tilt control mechanism for a seat assembly in a vehicle. The present invention relates to an automotive seat assembly more particularly to an adjustable automotive seat assemblies. It is related to a seat tilting mechanism for adjusting a tilt angle of the seat assembly to enhance safety of the occupant.
PRIOR ART
There has been continuous development in the field of Vehicle seating arrangement in order to achieve increased comfort of the passenger and the co-passengers. There is also a great demand for optimizing comfort, flexibility and features within a vehicle's interior. The vehicles being more and more sophisticated and engines becoming powerful, there is an immediate need for flexibility in seating, seat adjustments of the passenger and the co-passengers. Adjustable seats such as collapsible seats, foldable seats and removable seats are made available in a range of vehicles. In order to further improve the comfort and safety of the passenger, vehicles were provided with seat belts and airbags
In General a seat is supported on rails that are bolted to the base of the vehicle. Typically a vehicle seat shall comprise of a seat back and seat bottom which may be cushioned. The seat back and seat bottom are interconnected by reclining mechanism for adjusting the tilt angle of the seat back. In view of foregoing thoughts and practices there is a need to have a good seat assemblies that can be adjusted to be in multiple positions, which however shall be safe and comfortable to the passenger
When the vehicle undergoes a high speed collision, the linear and angular forces acting on the body of the occupant can make the person slip from the seat and hit the interior parts of the vehicle. Seat belts are designed to overcome this problem. The provision of seat belt and airbags minimize the impact on the occupant within the interior of the vehicle and protects the passenger from

smashing into the windows, doors, dash board or windshield or even being thrown out from the vehicle.
Many active measures are taken to reduce collisions on road by many administrative agencies in terms of restrictions of speed and road regulations. However, now the manufacturers of vehicles are also attempting safety measures assuming that collisions are inevitable and there is a high need for giving safety along with comfort to the passenger. And their attempt is to reduce the severity of injuries to all the occupants in the vehicle.
Air bags used in conjunctions with seat belts are very effective. The air bag tends to spread out the violent impact of the collision and keep the passenger safe from smashing against doors, windows, dashboard or windshield. Seat belt mechanism is activated in case of all types of crash. This would retain the passenger firmly in his seat and only then Airbags are deployed. Deployment of airbag without the use of seat belt can prove fatal. As the body is restrained from physical movement by the seat belt, chances of safety and survival are increased.
Even though safety systems restrain the passenger within the seat by means of a seat belt, they do injure sensitive parts of human body like neck and spine during restrained protection. There are also attempts that beyond the air bag and the seat belt, when collisions of the passenger with the interior of the car cannot be avoided such parts and structures that are likely to hit by the passenger are usually designed to collapse and cushion. Though an expensive option, existing methods are not very effective in providing safety to occupant in case of high impact crash.
The adjustable seat back incline, seat height, linear to and fro seat movement offer comforts of seating, but none offer sufficient safety during collision. In view of protecting the life of the passenger injuries become inevitable due to the extraordinary postures and movements experienced by the passenger due to the

extraordinary force experienced during a collision. Also during cruising, sitting in an upright position puts strain on the back of the passenger and also there is a continuous pressure in the lower back portion of the body of the passenger. The passenger can adjust the body posture by himself during cruising so as to be seated in such a way that the weight is distributed evenly and his center of gravity is lower than the center of gravity when seated vertical. This tilted position of the passenger will further enhance his opportunity to suffer less during a collision as in the tilted position his center of gravity has been lowered sufficiently. The reduced center of gravity would naturally reduce the forces acting on the neck of the passenger and most of the impact force is absorbed by strong muscles of the lower portion of the body against seat cushion allowing the upper portion not to suffer much.
Here in this invention it is attempted to enhance the safety by suitably arranging the seat assembly to make seat belts more effective and to minimize injury caused by airbags. In the process, seating comfort is also improved which adds to the benefit of the invention.
In general, a tilt control mechanism envisaged in the invention enables the tilting of the seat assembly when occupied by the passenger not only to improve the comfort of the passenger but also makes it safe when there is a collision
OBJECTS OF INVENTION
The primary objective of the invention is to have an improved tilt control mechanism for a vehicle seat to enhance occupant safety. When the vehicle is in motion, the body of the passenger seated is subjected to different forces i.e. acceleration and deceleration, to lateral swaying from side to side.
Another objective of the invention is to provide a seat tilt control mechanism that provides increased comfort to passengers.

Yet another objective of the invention is to have a synchronized tilt control mechanism.
SUMMARY OF THE INVENTION
The proposed system of tilt control mechanism for a seat assembly in a vehicle is a combination of hardware and software for managing the tilting of the vehicle seat assembly. A set of predefined thresholds such as the weight of the passenger, vehicle speed are stored in a memory of the electronic control unit (ECU). Based on the stored thresholds, ECU triggers the hardware to readjust the seat position once the vehicle reaches the cruising speed. The adjusted seat in the inclined angle will provide additional comforts to the passenger by reducing the center of gravity at higher speeds—The inclined adjusted position of the seat would naturally reduce the forces acting on the neck of the passenger and in the event of crash; most of the impact force is absorbed by strong muscles of the lower portion of the body against seat cushion which allows the upper portion not to suffer much. In these circumstances, the seat belt would be less painful to the passenger. Similarly the deployment of the air bags in action will not cause undue injuries as body has undergone efficient braking sufficiently. The ECU continuously monitors the vehicle speed and sets the optimum tilt angle which can provide maximum safety and comfort for the occupant. The illustration of this is given in the accompanying figures. It is to be noted that the preferred embodiment is described with reference to a passenger seat as in most of the vehicle the front passenger seat is essentially a. single seat. However, the invention is extendable to any other passenger seat which is an independent seat, including rear seat. All reference to a passenger is construed to extend to the passenger in front seat, in rear seat, which seats may be single seater, double seater or seaters of bigger capacity. Furthermore, the mechanism is operable for any other set of seats not necessarily a unitary seat meant for a single person. The mechanism is equally applicable to two seaters and three seaters with necessary modifications.
The seat tilt control mechanism according to present invention enhances occupant safety by readjusting the seat position to minimize impact force on

human body. This can be a cheap alternative for Airbags in passenger safety. Also, it reduces the injury caused by deployment of Airbag (if the vehicle employs one) in case of high impact crash. The greatly added to passenger comfort when the vehicle cruises at high speed. Neck injury during accident will be drastically reduced.
BRIEF DESCRIPTION OF DRAWINGS
We now describe the drawings with reference to the invention:
Figure 1 illustrates the architecture of the invention, which includes the mechanical means controlled by the electronic means including the microprocessor.
Figure 2 illustrates on its left side according to the prior art the high center of gravity (A1) with the impact force at point (P1) and the right side drawing illustrates according to the present invention the low centre of gravity (A2) with impact point (P2). 'P' is the point where impact force is maximum in the region to the neck and head.
Figure 3 illustrates the relationship and the relative position of the seat and the tilting mechanism.
Figure 4 illustrates the arrangement of seat assembly according to the present invention. Figure 4a shows the arrangement of seat assembly and footrest. Figure 4a illustrates another embodiment of the arrangement of the seat assembly and footrest.
Figure 5 illustrates the relationship between the center of the gravity and the torque experienced by the body according to prior art
Figure 6 illustrates the relationship between the center of the gravity and the torque experienced by the body in the seat as designed in the invention.

DESCRIPTION OF THE INVENTION
The invention is directed to a tilt control mechanism for a seat in a vehicle, more specifically to a single seat and further specifically to passenger's seat, which is adapted for synchronized tilting of the seat assembly between an upright position and a tilted position.
Figure 1 shows a block diagram of tilt control mechanism of a seat assembly in a vehicle. The seat assembly comprises of a seat back (1), seat bottom (2) that are cushioned and a curved armrest (3) and footrest (not shown in this figure). The seat assembly and the footrest are disposed relatively with respect to each other. The seat assembly is supported on a base frame(4). The sliding movement of the seat assembly is controlled by a gear mechanism. The gear mechanism is driven by a motor (6). A set of predefined thresholds are stored in memory of ECU. The memory can be EEPROM or FLASH ROM or simple ROM. A vehicle data bus (CAN, K-Line or K-bus etc) (7) is provided to communicate the parameters such as current vehicle Crash status, vehicle speed, occupant weight classification and tilt angle data of the active seat assembly. An electronic control unit (8) records the vehicle speed. The parameters communicated by the vehicle data bus(7) are received by an Active Seat Electronic Control Unit (ECU) (9). If the vehicle speed crosses the pre-defined threshold that is stored in a memory , then based on the weight of the passenger, ECU(9) calculates the optimum tilt angle that is required to protect the passenger incase of impact at that speed. ECU (9) then initiates the tilt process at a steady rate by feeding required input to the stepper motor (6).The tilt process is performed gradually and the rate is predetermined. Occupant or the passenger would not notice any sudden shift as the seat tilt would be a maximum of 3 to 5 degrees a second. The ECU (9) continuously re-adjusts the tilt angle to provide maximum safety while the process itself provides additional comfort as occupant can relax by stretching his/her back on the tilted seat. Also, because of reduced centre of gravity, occupant would experience less acceleration forces acting on the body which improves the seating grip as well as the comfort levels. Incase of impact before the optimal tilt angle is reached, the ECU(9) would go for Quick shift where the tilt is rapid. This is to meet the ultimate aim of enhancement of safety of the

occupant. Whereby any attempt to tilt the seat by the ECU(9) activated in the event of collision or cruising will tilt the seat bottom(2) upwardly and the seat back (1) downwardly, may be at the same or different rate of motion.
Vehicles of typical nature now will become more safely and effectively operable employing a set of software features supplementing the hardware features over the other mechanical features practiced in the prior art and this is achieved successfully in this invention.
Figure 2 depicts the tilting of the seat assembly as shown in 2b according to present invention in comparison to the tilting of the seat assembly as shown in 2a according to prior art. With respect to the prior art a high center of gravity is experienced at (A1) with the impact force at P1. Whereas the tilt control mechanism according to the present invention enables low center of gravity at A2 when a similar impact force of is experienced at P2.
The seat assembly is tilted to provide increased safety and comfort to the passenger. In order to reduce the strain on the legs due to the tilting movement, a unique foot rest (20) is provided. As the seat assembly is tilted the foot rest (20) is also simultaneously lifted. As a result the torque experienced by the upper body shall be as low as possible. This will reduce chance of neck injury and more efficient braking before the occupant hits the air bag. Friction experienced by the lower body shall be as high as possible, so that passenger remains firmly seated and would not slip from the seat incase of accident. Slipping from the seat can prove fatal as occupant would be hitting the dashboard and then he is pushed back with the same force by the deployment of airbag, which can severely damage the neck of the passenger. The synchronized tilt control mechanism of the seat assembly and footrest aims to overcome problems suffered in the prior art. With lower Centre of Gravity, rotational force acting on upper body is less and hence chances of neck injury is reduced. With existing active seat technology, the seat is pushed back if a crash is detected. By considering the force vectors that act on upper body, especially on neck during the time of crash, it can be easily demonstrated that this method can double the damage to neck as the force with which the seat gets pushed back will get added to the impact force

on human body. This is completely ruled out with the new technique. The mechanism is made reversible, so even after high impact crash; the system does not require replacement unlike in case of Airbags.
From the illustration it is amply clear that the upper body experiences minimum torque and lower body has maximum friction.
Further as the tilting movement of the seat assembly is controlled by electronic control unit the chances of failure or wear out of the mechanical part is minimized, the seat back and the seat bottom can be adjusted very efficiently and very precisely. Furthermore the seat back and the seat bottom can be made to tilt simultaneously at the same rate or at a different rate. It can also be controlled to tilt to the same angle or to different angle. All these adjustments are possible without any change in configuration or physical modifications of the seat.
The tilt control mechanism according to the present invention also prevents uncontrolled forward tilting of the seat assembly. In the preferred embodiment the electronic control unit ECU (9) may control this act or it may be controlled by a uni-direction motor control mechanism. Another aspect of the invention is that there is shift in the center of gravity of the passenger due to adjustment which is favorable to the passenger as the seat tilts under condition of cruising or collision.
In the present invention as the seat back is tilted, the bottom of the seat also slides at an inclination so that the back of the passenger including the waist of the passenger in such a seat will tend to slide upward when the seat is slided downwards.
The tilting of the seat back and the seat bottom is construed to be simultaneous, however one may be more pronounced than the other in terms of length, rate and angle, in a manner such that the body of the seated person is maintained in substantially a correct posture at all angles of inclinations, including before tilting, after tilting and duration of the tilting.

The seat assembly in one of the preferred embodiment shall be so contoured to maintain the pressure distribution pattern to minimize extraordinary pressure building in any specific areas of the seat back as the angle of inclination of the seat increases during tilting.
The seat assembly in another preferred embodiment shall be so contoured to have a footrest integral with the seat assembly.
It is also desirable to have a biasing means which shall force the seat into a normal upright position.
It is also desirable to have a seat which can be adjusted to take into account the varying weights of the passengers, varying space availability in the vehicle, varying speed of the vehicle and varying vehicle parameters and other variable control features and equipments available in the vehicle and also to take care of the possible preferences for the comfort of the passenger in normal driving condition.
The present invention is efficient in use, economical to manufacture capable of long operating life and very well adapted for the proposed use and greatly increases the safety of the occupant while providing additional comfort.
Figure 3 illustrates the relationship and the relative position of the seat and the tilting mechanism. In accordance with one of the embodiment there is provided a vehicle seat assembly having a seat back(31) , seat bottom (32), arm rest. The seat assembly is supported by support track mechanism comprising a pair of slider rail (33) and a gear train(34). The seat bottom is supported by the curved portion of the slider rail. The sliding or the tilting of the seat assembly is controlled by the gear train (34) which driven by a stepper motor. The sliding rail (33) is provided on either sides of the gear train(34 ) The motor and portion of the slider rail (33) is sustained by a base frame that is attached the base of the vehicle. The seat back shall be positionable at any one of the plurality of the positions provided with respect to the seat assembly thereby positioning the

center of gravity of the passenger at a desired position with respect to ground contacting portion. A lever mechanism coupled with the seat assembly and support track mechanism enables selectively performing the adjustment of the seat assembly with respect to the frame
The seat tilt mechanism can also be accomplished using pneumatic control system. The use of stepper-motor and gear train mechanism to accomplish the tilt is only one of several possible options that are available to implement the objective of seat tilt and in no means restrict the scope of the invention.
The present invention aims at providing a seat capable of effectively absorbing an impact applied to a passenger occupying a seat in consideration to the above described facts, to the extent that impact force on the upper body is minimized.
Once the vehicle crosses the cruising speed, The Active Seat ECU(9) continuously re-adjusts the tilt angle based on criteria described earlier, to provide maximum safety while the process itself provides additional comfort as occupant can relax by stretching his/her back on the tilted seat. Incase of impact before the optimal tilt angle is reached, the ECU (9) would go for Quick shift where the tilt is rapid. This is to meet the ultimate aim of enhancement of safety of the occupant.
The seat assembly is tilted such that the seat back and seat bottom synchronously move backward, top end of the seat back moving in backward downward direction along with front end of the seat bottom in forward, upward direction. It is to be noted here that the head portion, waist and the legs of the passenger is held in same relative angular displacement with respect to each other during and after the seat adjustment as it existed prior to tilt, thereby preventing the head portion being thrown backward during collision.
The two factors that can increase the safety of the passenger in the event of crash are as follows:-

1. The torque experienced by the upper half of the body mainly neck and head is (which is roughly equal to the impact force multiplied by center of gravity of the body) must be kept as low as possible.
2. The restraining force that prevents the body from moving forward shall be as high as possible so that the body does not slip from the seat in case of high impact collision.
The figure 4 shows the following with respect to arrangement seat assembly (40). Fig 4a shows a overall arrangement of the footrest(41) that is provided with a gear mechanism (42b)that is smaller than gear mechanism (42b) of the seat assembly. As the seat assembly is tilted the footrest 41 is also correspondingly moved upwards. The movement of the footrest can be also pneumatically controlled. Fig 4b shows the embodiment of the present invention, wherein the seat assembly would move horizontally to accommodate long legs of the passenger. Full active seat setup would slide over an additional horizontal rail support system. The extent of slide can be limited and optionally, the back rest can also be adjusted to different angle as per convenience of customer. This is because; the amount of inclination is not too high.
Another aspect of the invention is to provide a method for adjusting a seat assembly by translating the seat assembly from an aft position wherein the passenger may sit on a seat bottom, face the first direction and legs placed generally at 90 degrees from the ground contacting seating assembly, to a fore position wherein the passenger may sit on a seat bottom continue to face the first direction but his legs generally at more than 90 degrees from the ground contacting seat assembly but supported by the foot rest. The method provides for tilting the seat assembly along with seat back and seat bottom from a first tilt angle in the aft position to a second tilt angle in the fore position. The maximum allowable angle of tilt of the seat assembly is well within a present range that is calculated considering the comfort of the occupant. The radius of curvature of the supporting arm and the length of the arc can all be predetermined such that the seat assembly may be programmable to select a center gravity of the passenger's seated within the seat from a set of hypothetical values predetermined and stored in a memory. But the tilt is also dependent on the

location of seat on horizontal rail. This is to avoid inconvenience to passenger if the seat is re-located to front close to dashboard.
Consequently during collision or cruising due to tilting both the legs are correspondingly raised by tilting of the upper body backward unitedly, with the legs fully supported on the foot rest. Further when the seat assembly tilts the bottom frame receives a reaction force corresponding to the tilt, thereby increasing the restraining force that prevents the body from moving forward.
As seen in the illustrations the posture of the passenger is maintained and impact on the seat passenger is effectively absorbed by the mechanism devised herein so as to achieve an improved comfort performance of the seat assembly during cruise and an improved safety performance of the seat assembly during collision.
The vehicle with a tilt control mechanism according to the present invention shall include a support base frame mounted on the vehicle; a seat mounted on the base frame supporting the passenger seated; a curved track arm supporting the seat for selective angular seat movement relative to the base; a gear adapted to support the track for selective seat movement of the seat relative to the base frame; a rail supporting the seat for selective linear seat movement relative to the base. The track serves as a moving surface that allows the seat to tilt with respect to the base. The track has a constant pre-calculated radius arc. The assembly as a whole is capable of moving in longitudinal direction of the vehicle, capable of moving in vertical direction of the vehicle and capable of moving in angular tilting direction, each movement independent of one another. But raising the height of the seat is not recommended as it would increase the centre of gravity. This is just an option.
With reference to figure 5 and 6 it describes the relationship between the center of gravity and torque experienced by the body during the collision.
The friction force and torque experience by body in now supported with relevant equations using properties and constants.

The equations are formed using key elements that contribute to torque and frictional force. It is just approximation and is not construed the only method for calculating the values.
Center of gravity, Torque experienced by body
Cg = Centre of gravity.
Cg' = New centre of gravity.
Fu = Friction component from centre of gravity.
Fu'= New Friction component after the tilt.
FL = Friction component that lower body experiences that avoids slipping
from seat.
FL= New Friction component that lower body experiences that avoids
slipping from seat after tilt
FL" = Reaction component arising due to tilting of the seat
Lu = Length of upper body.
L[_ = Length of lower body.
4* = Angle between back rest and seat.
0 = Inclination of seat with horizontal.
p = Inclination of back rest with horizontal.
1 = Impact force.
Toid = Torque Old
TNew = Torque New after the tilt
Torque = Force X Length. (1)
Torque old = I x Cg
but Cg a (Lu • sin (3') i,.e Cg is directly proportional to Lu* Sin (3'
Therefore Torque old a Lu. sin p'
ToidaLu(sin(18O-(0 + p)))
As (3= 180-(9 + i|j)
But 9 = 0° in old system.
Toid a Lu*sin (180- qi)
or
Toid = K * Lu sin (ip) --(2) where K is a proportionality constant
Similarly

TNew = K * Lu sin (ip + 6) (3)
But for all angles All qj angles >= 90 deg,
Sin (qj + 0) < sin (qj) (4)
i-© Trjew < Toid
Hence the above equation shows that the torque experienced by the occupant according to the present invention is less when compared to the torque experienced in the prior art. That is the torque experienced by upper portion of the body of the occupant is less and as a result safety of the occupant is increased.
For e.g If the angle between the seat back and seat bottom is 110deg and if the seat is tilted by 30 deg, then Tnew will be 29.69% less than Told.
Friction to stop passenger from slipping:
F total old = Fu + F|_
Since FL a LL, FL = K2 * LL
Where K2 is one more proportionality constant
F total old = FL +K2 Lu * cos (3'
= FL + K2Lu*cos(180-qj)
= FL - Lu cos qj
Fioid = k2 LL - K2 Lu cos qj - before inclination
F-rotainew= FL* + Fu' + FL" - after inclination
= K2 LL cos 9 + K2 Lu cos p + K2 * LL sin 9
= K2 LL cos 9 +K2 Lu cos (180- (0 + qj)) + K2 * LL sin 9
FT New = K2 LL (cos 9 + sin 9) - K2 Lu cos(9 + qj)
Suppose inclination between back rest and seat is 90° i.e., qj = 90°"
F T old = K2 LL. (5)
F T new = K2 LL.- K2 LU COS (90 + 9)
l~ T new "~ K2 ( LL + Lu sin 9) (6)
"^ FjNew >:> Fj old
Hence the above equation shows that the Friction experienced by the occupant according to the present invention is greater than the friction experienced in the

prior art. That is the greater friction experienced by the occupant is less and as a result safety according to the present invention helps in retaining the occupant in the seat even during collision.
As '9' increases, or With inclination (9\ passenger or the occupant has better grip on seat which prevents them from slipping from the seat in the event of crash. This greatly reduces chance of passenger hitting the air bag as they cannot slip "up", upside the inclined seat. Also lower body is made up of very strong muscles which can easily take impact when it has a smooth cushion supporting it is a Vamp*. So, the impact on upper body is reduced, which also makes the seat belts to be less painful and more efficient in stopping the upper body from hitting air bag.
The foregoing invention thereby is describing the seat generally having an angular tiltable seat bottom. The seat continuous to have features known in prior art i.e. seat back tiltable and slidably movable seat bottom. The seat may also be capable of the lowerable and raisable with respect to the vehicle body.
Keeping this in mind, that the variations are large, it is attempted to describe few embodiments, which may amply cover the scope of the invention but not entirely in illustrations or in textual form.
The tilt control mechanism for a seat assembly as per present invention, is performed as a combination of instructions from electronic unit and regulates the gear mechanism such that with the tilted seat, center of gravity of the occupant seated in the seat is substantially lowered during cruising and definitely during collision. The gear mechanism being electronically operated enables the seat tilt movement to be stopped at or released at any desired seat tilt inclination but within the safety predetermined parameters.
Further, the seat assembly comprising a seat bottom, a seat back and a foot rest, herein is lifted, slided and tilted as an integral unit while the center of gravity of the passenger seat is lowered during any such tilting operations and thereafter.

The invention as described herein is relatively a simple and highly cost effective development but which has not been recognized so far in the prior art. The invention comprises an integral seat assembly having a seat back, a seat bottom, arm rest and a foot rest, which are relatively displaced rigidly with respect to each other and are movable together. As the seat assembly is tilted, the seat back is lowered and seat bottom is raised such that the foot rest is simultaneously raised.
While some of the specific embodiments herein described, refer to as passenger's seat and refer to backward movement it will be apparent to those skilled in the art that it shall be applicable to any type of seats and to different types of movements. The invention thereby shall cover all the modifications and variations that can be made without departing from the spirit and scope of the invention and all details herein given are only for the purpose of explanation and illustrations and shall not limit the scope of invention.

WE CLAIM :
1. A tilt control mechanism for a seat assembly of vehicle comprising:
a. a base frame attached to the base of the vehicle;
b. a support track mechanism connected to and movably engaging
with the said frame;
c. a tiltable seat assembly slidably connected to the support track
mechanism; and
d. a memory stores a set of threshold values based on which an
electronic control unit controls the degree of tilt of said seat
assembly corresponding to and within the predetermined
permissible degrees of tilt; such that as the seat assembly is tilted
the bottom of the seat assembly slides up so as to lower the center
of gravity.
2. A tilt control mechanism for a seat assembly of vehicle according to claiml
comprising
a. the support track mechanism, having a curved slider rail and a gear
train mechanism;
b. the seat assembly, having a seat back, a seat bottom, and a arm
rest which are disposed relatively with respect to footrest but such
that the seat assembly and foot rest are fixedly displaced with
respect to each other, said seat operatively connected to the
support track mechanism for tilting the said seat; and
c. the memory stores atleast one of the values, the vehicle speed,
occupant weight classification as threshold values.
3. A tilt control mechanism for a seat assembly of vehicle according to claim
2 comprising:
a lever means cooperating with the seat and track for selectively lowering and raising said seat with respect to the frame.

A method for tilting the seat with seat adjustment assembly in a vehicle using a seat support system and electronic control units operably configured to carry out adjustments of a seat, the said method comprising:
a. receiving plurality of threshold values comprising atleast vehicle
speed and occupant weight classification information;
b. comparing the received parameters with stored threshold values;
and
c. adjusting the tilt of seat assembly accordingly that is assigned to
the stored set of parameters.
5. A method for tilting the seat according to claim 5, the said method comprising:
displacing the a seat assembly having a seat back, a seat bottom, and a arm rest, relatively with respect to a footrest and are displaced fixedly with respect to each other; and
wherein the tilting movement is activated and deactivated as a function of operating parameters of the vehicle.