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Class Information
Number: 187/274
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 > Plural fluid rams having interrelated operation
Description: Drive-means* provided with an additional, similar, telescopic, fluid powered mechanism having its operation influenced or affected by the other 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 |
| 7198135 |
Lifting device, especially lifting platform for motor vehicles |
Apr. 3, 2007 |
| 7073631 |
Lifting device with synchronization mechanism |
Jul. 11, 2006 |
| 6817449 |
Vehicle lifting device |
Nov. 16, 2004 |
| 6811000 |
Volumetric operating system for vehicle lifts |
Nov. 2, 2004 |
| 6719099 |
Integral elevator hydraulic power unit |
Apr. 13, 2004 |
| 6568897 |
Raisable/lowerable vehicle bed carrying loads |
May. 27, 2003 |
| 6557276 |
Earth-moving machine |
May. 6, 2003 |
| 6422349 |
Hydrostatic displacement drive for lifting and lowering and holding loads, in particular for lifts |
Jul. 23, 2002 |
| 6382080 |
Apparatus for synchronization of telescopic rams in hydraulic elevators |
May. 7, 2002 |
| 6378660 |
Hydraulic elevator without a machineroom |
Apr. 30, 2002 |
| 6343892 |
Drilling tower |
Feb. 5, 2002 |
| 6296081 |
Lift cylinder and mast assembly of forklift |
Oct. 2, 2001 |
| 6279685 |
Lifting apparatus |
Aug. 28, 2001 |
| 6085873 |
Pneumatic elevator |
Jul. 11, 2000 |
| 6026934 |
Hydraulic lift with yoked cylinders |
Feb. 22, 2000 |
| 6022183 |
Machine and method for lifting massive objects |
Feb. 8, 2000 |
| 5908088 |
Hydraulic drive mechanism for a vertical conveyor |
Jun. 1, 1999 |
| 5791860 |
Hydraulic platform lift for a truck tailgate |
Aug. 11, 1998 |
| 5718307 |
Method of elevating a three-dimensional workpiece |
Feb. 17, 1998 |
| 5636713 |
Multiple RAM assembly and recuperative drive system for hydraulic lift |
Jun. 10, 1997 |
| 5597987 |
Twin post, telescoping jack hydraulic elevator system |
Jan. 28, 1997 |
| 5579870 |
Water-driven robots |
Dec. 3, 1996 |
| 5397214 |
Apparatus for handling thin, flexible sheets of material |
Mar. 14, 1995 |
| 5349142 |
Energy conservation type hydraulic elevator and speed control method of hydraulic elevator |
Sep. 20, 1994 |
| 5139110 |
Lifting apparatus |
Aug. 18, 1992 |
| 5110251 |
Hydraulic platform lift for truck trailers |
May. 5, 1992 |
| 4807890 |
Sealing combination |
Feb. 28, 1989 |
| 4807724 |
Hydraulic drive system for elevator |
Feb. 28, 1989 |
| 4772172 |
Low profile vehicle parking apparatus |
Sep. 20, 1988 |
| 4706458 |
Hydraulic system for controlling motor vehicle lifts in general |
Nov. 17, 1987 |
| 4703835 |
Hoisting apparatus |
Nov. 3, 1987 |
| 4502569 |
Transportable heavy-lift apparatus |
Mar. 5, 1985 |
| 4436183 |
Material handling apparatus |
Mar. 13, 1984 |
| 4366883 |
Equalizing system for load lifting apparatus |
Jan. 4, 1983 |
| 4363380 |
Elevator and method of lifting |
Dec. 14, 1982 |
| 4357994 |
Hydraulic well equipment hoist |
Nov. 9, 1982 |
| 4157743 |
Working base elevating apparatus |
Jun. 12, 1979 |
| 4155425 |
Stabilized hydraulic elevator |
May. 22, 1979 |
| 4063619 |
Elevator platform structure |
Dec. 20, 1977 |
| 3934681 |
Overhead service unit |
Jan. 27, 1976 |
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