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Class Information
Number: 187/275
Name: Elevator, industrial lift truck, or stationary lift for vehicle > Having specific load support drive-means or its control > Includes fluid supporting ram in drive-means > With fluid flow controlling means
Description: Drive-means* provided with particular means for directing and regulating the amount of fluid going to the telescopic, fluid powered mechanism.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7299897 |
Hydraulic platform lift incorporating positive displacement valve, and positive displacement valve for hydraulic platform lift |
Nov. 27, 2007 |
| 7240771 |
Mast staging hydraulic circuit |
Jul. 10, 2007 |
| 7134528 |
Hydraulic elevator with valve for preventing discharge of pressure accumulator and method of controlling same |
Nov. 14, 2006 |
| 6971481 |
Hydraulic elevator with motor controlled hydraulic drive and method for controlling the hydraulic elevator |
Dec. 6, 2005 |
| 6957721 |
Hydraulic elevator with an accumulator |
Oct. 25, 2005 |
| 6817449 |
Vehicle lifting device |
Nov. 16, 2004 |
| 6814187 |
System for detecting liquid in an inground lift |
Nov. 9, 2004 |
| 6742629 |
Valve control unit for a hydraulic elevator |
Jun. 1, 2004 |
| 6719099 |
Integral elevator hydraulic power unit |
Apr. 13, 2004 |
| 6662905 |
Elevator which counterweight is also the plunger of the propelling fluid dynamic device which produces and controls the movements thereof |
Dec. 16, 2003 |
| 6595329 |
Forklift truck with a lifting device |
Jul. 22, 2003 |
| 6537017 |
Cantilevered, self-adjusting pneumatic pallet positioner |
Mar. 25, 2003 |
| 6510923 |
Control method and apparatus for a hydraulic elevator using only load pressure data |
Jan. 28, 2003 |
| 6505711 |
Hydraulic elevator, comprising a pressure accumulator which acts as a counterweight and a method for controlling and regulating an elevator of this type |
Jan. 14, 2003 |
| 6499567 |
Hydraulic power unit for an elevator drive |
Dec. 31, 2002 |
| 6435310 |
Hydraulic elevator system |
Aug. 20, 2002 |
| 6422349 |
Hydrostatic displacement drive for lifting and lowering and holding loads, in particular for lifts |
Jul. 23, 2002 |
| 6378660 |
Hydraulic elevator without a machineroom |
Apr. 30, 2002 |
| 6182796 |
Vehicle lift |
Feb. 6, 2001 |
| 6164415 |
Hydraulic control apparatus for industrial vehicles |
Dec. 26, 2000 |
| 6125970 |
Hydraulic device for forklift |
Oct. 3, 2000 |
| 6085873 |
Pneumatic elevator |
Jul. 11, 2000 |
| 6059073 |
Overspeed valve for hydraulic elevator |
May. 9, 2000 |
| 5992573 |
Elevator up start |
Nov. 30, 1999 |
| 5975246 |
Hydraulically balanced elevator |
Nov. 2, 1999 |
| RE36022 |
Servo control for hydraulic elevator |
Jan. 5, 1999 |
| 5636713 |
Multiple RAM assembly and recuperative drive system for hydraulic lift |
Jun. 10, 1997 |
| 5636652 |
Valve for a hydraulic elevator |
Jun. 10, 1997 |
| 5603390 |
Control system for an elevator |
Feb. 18, 1997 |
| 5593004 |
Servo control for hydraulic elevator |
Jan. 14, 1997 |
| 5586619 |
Lifting apparatus |
Dec. 24, 1996 |
| 5579870 |
Water-driven robots |
Dec. 3, 1996 |
| 5579868 |
Procedure for operating an elevator, and an elevator machinery |
Dec. 3, 1996 |
| 5522479 |
Control valve device for hydraulic elevator |
Jun. 4, 1996 |
| 5397214 |
Apparatus for handling thin, flexible sheets of material |
Mar. 14, 1995 |
| 5374794 |
Elevator control valve assembly |
Dec. 20, 1994 |
| 5373121 |
Method and apparatus for saving electrical energy in an hydraulic elevator drive |
Dec. 13, 1994 |
| 5299906 |
Self-adjusting pneumatic load elevator |
Apr. 5, 1994 |
| 5289901 |
Hydraulic elevator pressure relief valve |
Mar. 1, 1994 |
| 5285027 |
Hydraulic elevator and a control method thereof |
Feb. 8, 1994 |
| 5234078 |
Collapsing stair lift |
Aug. 10, 1993 |
| 5232070 |
Up leveling control system for small elevators |
Aug. 3, 1993 |
| 5217090 |
Vertically adjustable work station assembly |
Jun. 8, 1993 |
| 5212951 |
Hydraulic elevator control valve |
May. 25, 1993 |
| 5156080 |
Control valve for a hydraulic elevator |
Oct. 20, 1992 |
| 5119907 |
Vertically adjustable work station assembly |
Jun. 9, 1992 |
| 5082091 |
Hydraulic elevator control |
Jan. 21, 1992 |
| 5065844 |
Hydraulic platform and level correcting control system |
Nov. 19, 1991 |
| 5060762 |
Pressure intensifier for repositioning telescopic plungers in synchronized telescopic cylinders |
Oct. 29, 1991 |
| 5048644 |
Method for improving the performance of a motor controlled hydraulic elevator |
Sep. 17, 1991 |
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