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Class Information
Number: 248/421
Name: Supports > Stand > Adjustable vertically > Toggle or link
Description: Device wherein the adjusting means include a plurality of pivoted bars connected to the support surface and movable to raise and lower the surface.










Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
4778138 Apparatus for adjusting height of seat for automobile Oct. 18, 1988
4767157 Seat lifter Aug. 30, 1988
4757989 Martial arts board holding device Jul. 19, 1988
4747353 Straight line motion mechanism May. 31, 1988
4747571 Adjustable seats and components therefor "A" version May. 31, 1988
4744712 Apparatus and method for an improved wafer handling system for cantilever type diffusion tubes May. 17, 1988
4741512 Lifting device or load-supporting apparatus May. 3, 1988
4738427 Height adjusting device for an automotive seat Apr. 19, 1988
4729539 Seat suspension device Mar. 8, 1988
4726633 Tiltable monitor Feb. 23, 1988
4725031 Bar linkage seat adjuster apparatus and method Feb. 16, 1988
4720070 Height adjuster operation mechanism for an automotive seat Jan. 19, 1988
4700921 Adjustable pedestal for boat seats Oct. 20, 1987
4685731 Tank crew seat structure Aug. 11, 1987
4681292 Pneumatic seat support with linkage and horizontal shock absorbers Jul. 21, 1987
4669139 Reclining bunk for sleeper Jun. 2, 1987
4666119 Extendible framework May. 19, 1987
4659052 Vertical adjustment support device for a vehicle seat Apr. 21, 1987
4650148 Locking device for a seat suspension Mar. 17, 1987
4648575 Height adjusting device for vehicle seat Mar. 10, 1987
4648578 Weight adjustment device for a seat suspension Mar. 10, 1987
4643383 Manual seat adjuster Feb. 17, 1987
4632355 Pneumatic seat support with linkage and horizontal shock absorbers Dec. 30, 1986
4629151 Seat lifter Dec. 16, 1986
4607578 Positioning mechanism Aug. 26, 1986
4596373 Anti-vibration apparatus for seismic acceleration Jun. 24, 1986
4589621 Ergonomic monitor stand May. 20, 1986
4573657 Vertical adjustment device for a vehicle seat Mar. 4, 1986
4566667 Seat suspension Jan. 28, 1986
4565343 Terminal elevating mechanism Jan. 21, 1986
4558648 Energy-recycling scissors lift Dec. 17, 1985
4556185 Seat frame for a vehicle seat Dec. 3, 1985
4541134 Vibration damping supports Sep. 17, 1985
4533106 Lifting device for a dentist chair Aug. 6, 1985
4529159 Seat structure for an automotive vehicle Jul. 16, 1985
4522547 Heavy load conveyor system Jun. 11, 1985
4520986 Suspended seat assembly Jun. 4, 1985
4515339 Height adjustment arrangement for seats, particularly motor vehicle seats May. 7, 1985
4511110 Scissors lift table Apr. 16, 1985
4506814 Revolving-ladle turret for continuous casting plants Mar. 26, 1985
4502390 Self-elevating acute turn guide hose hauler vehicle Mar. 5, 1985
4487390 Vehicular seat height adjusting device Dec. 11, 1984
4482120 6-Way manual seat adjuster Nov. 13, 1984
4455948 Automotive trunk table Jun. 26, 1984
4449262 Medical couch incorporating a lifting mechanism May. 22, 1984
4448382 Power operated chair lift mechanism May. 15, 1984
RE31565 Portable shelter Apr. 24, 1984
4437411 Multi-position student table Mar. 20, 1984
4422611 Liftable driver's seat for automobiles Dec. 27, 1983
4411586 Device for delivery of cores Oct. 25, 1983

1 2 3 4 5 6










 
 
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