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Class Information
Number: 254/103
Name: Implements or apparatus for applying pushing or pulling force > Screw > Geared
Description: Screw pushing and pulling implement comprising rotary gears for actuating the screw or the screw-actuating nut.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8413962 |
Device and method for moving a working means in the ground |
Apr. 9, 2013 |
| 8377140 |
Expandable spinal implant device |
Feb. 19, 2013 |
| 8365331 |
Auto powered jack apparatus |
Feb. 5, 2013 |
| 8360397 |
Ball screw device |
Jan. 29, 2013 |
| 8308151 |
Elevator assembly for robotic positioning of a workpiece |
Nov. 13, 2012 |
| 8292040 |
Double screw elevator |
Oct. 23, 2012 |
| 8162289 |
Modular jack apparatus for lifting floors and other structures |
Apr. 24, 2012 |
| 8052125 |
Motor drive for a camper jack |
Nov. 8, 2011 |
| 7997846 |
Drywall panel lifter |
Aug. 16, 2011 |
| 7503531 |
Height adjusting mechanism |
Mar. 17, 2009 |
| 7472889 |
Vehicle lift system |
Jan. 6, 2009 |
| 7458562 |
Extendible and retractable actuator |
Dec. 2, 2008 |
| 7401764 |
Electronic jack |
Jul. 22, 2008 |
| 7264226 |
Remotely-adjustable support apparatus and methods |
Sep. 4, 2007 |
| 6988712 |
Screw jack |
Jan. 24, 2006 |
| 6910677 |
Portable power jack device |
Jun. 28, 2005 |
| 6874764 |
Mechanical screw jack having stroke limiting nut |
Apr. 5, 2005 |
| 6764065 |
Trailer jack assistance apparatus |
Jul. 20, 2004 |
| 6746142 |
Headlamp for automobile with aiming screw having locking portion |
Jun. 8, 2004 |
| 6739580 |
Electrically operable vehicle jacks |
May. 25, 2004 |
| 6722635 |
Multiple screw jack |
Apr. 20, 2004 |
| 6685169 |
Motor operated jack for vehicles |
Feb. 3, 2004 |
| 6659428 |
Jack for automobile |
Dec. 9, 2003 |
| 6513790 |
Electromotive adjustment assembly |
Feb. 4, 2003 |
| 6499722 |
Screw jack |
Dec. 31, 2002 |
| 6446937 |
Removable gear drive for mechanical jack |
Sep. 10, 2002 |
| 6299138 |
Directly driving electromotive jack device for releasing torsional force |
Oct. 9, 2001 |
| 6250170 |
Load directing trunnion mount for linear actuator |
Jun. 26, 2001 |
| 6158720 |
Anti-backlash nut assembly |
Dec. 12, 2000 |
| 6145812 |
Jack |
Nov. 14, 2000 |
| 6109594 |
Disengageable force regulator for linear electric screwjack |
Aug. 29, 2000 |
| 6082207 |
Vertically operating ball screw and nut actuator system for synchronously moving multiple elements in load balanced opposed directions, and methods of constructing and operating ball screw |
Jul. 4, 2000 |
| 5992826 |
Motorized jack |
Nov. 30, 1999 |
| 5906356 |
Adjustable lifting apparatus |
May. 25, 1999 |
| 5758867 |
Lifting device for the controlled vertical transfer of objects |
Jun. 2, 1998 |
| 5722304 |
Linear actuator |
Mar. 3, 1998 |
| 5687953 |
Jack apparatus |
Nov. 18, 1997 |
| 5664762 |
Automotive screw jack |
Sep. 9, 1997 |
| 5636705 |
Apparatus for moving a work platform along a rail |
Jun. 10, 1997 |
| 5609332 |
Device for lifting and holding cabinets |
Mar. 11, 1997 |
| 5542647 |
Two-speed jack |
Aug. 6, 1996 |
| 5496014 |
Motorized screw jack assembly |
Mar. 5, 1996 |
| 5492436 |
Apparatus and method for moving rig structures |
Feb. 20, 1996 |
| 5488880 |
Two-speed linear actuator driven by two motors |
Feb. 6, 1996 |
| 5398780 |
Linear actuator with speed controlling brake |
Mar. 21, 1995 |
| 5393036 |
Continuously engaged tangential driving tool |
Feb. 28, 1995 |
| 5343581 |
Housing and drive mechanism for screw lift of hospital bed |
Sep. 6, 1994 |
| 5286003 |
Jack |
Feb. 15, 1994 |
| 5123629 |
Screw-type jack |
Jun. 23, 1992 |
| 5118082 |
Electrically operated screw-type jack |
Jun. 2, 1992 |
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