| |
 |
|
Class Information
Number: 254/291
Name: Implements or apparatus for applying pushing or pulling force > Apparatus for hauling or hoisting load, including driven device which contacts and pulls on cable > Device includes rotatably driven, cable contacting drum > Plural drums or drum with plural distinct sections > Plural, distinct, drive motors > Noncompressible fluid
Description: Apparatus wherein at least one of the motors is operated by fluid which is not appreciably reducible in volume by a change in pressure or temperature.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6168062 |
Self-actuating slack puller |
Jan. 2, 2001 |
| 6164627 |
Device for hydraulically actuating winches in a pipe-laying machine |
Dec. 26, 2000 |
| 5984277 |
Method of operating a winch, and associated device |
Nov. 16, 1999 |
| 5836343 |
Pumps and pump handling apparatus |
Nov. 17, 1998 |
| 5176364 |
Direct drive hydraulic wireline winch assembly |
Jan. 5, 1993 |
| 4921219 |
Powered sailboat winch |
May. 1, 1990 |
| 4557390 |
Suspended counterweight control system |
Dec. 10, 1985 |
| 4555092 |
System for operation of a direct drive dual drum winch |
Nov. 26, 1985 |
| 4482133 |
Pneumatic winch |
Nov. 13, 1984 |
| 4432532 |
Direct drive dual drum winch |
Feb. 21, 1984 |
| 4398698 |
Freefall winch system and method of operation |
Aug. 16, 1983 |
| 4373332 |
Movement compensation arrangement |
Feb. 15, 1983 |
| 4359307 |
Vehicle for transporting compressible materials |
Nov. 16, 1982 |
| 4349180 |
Device for handling from a boat a submerged load hooked onto the end of a cable |
Sep. 14, 1982 |
| 4345742 |
Regenerative hydraulic interlock system |
Aug. 24, 1982 |
| 4323222 |
Control systems for hydraulically operated elements circuits or systems |
Apr. 6, 1982 |
| 4305571 |
Means for regulating two trawl winches |
Dec. 15, 1981 |
| 4234167 |
Automatic inhaul winch system |
Nov. 18, 1980 |
| 4223871 |
Winch mechanism |
Sep. 23, 1980 |
| 4204664 |
Winch mechanism for crane |
May. 27, 1980 |
| 4183649 |
Oil derrick string-up apparatus and methods |
Jan. 15, 1980 |
| 4088304 |
Winch system control mechanism for the simultaneous control of two winch motors |
May. 9, 1978 |
| 4058295 |
Small, variable-speed yarder |
Nov. 15, 1977 |
| 4005779 |
Tightline logging system |
Feb. 1, 1977 |
| 3965841 |
Method for hauling a vessel alongside a mooring platform |
Jun. 29, 1976 |
| 3966170 |
Traction winch |
Jun. 29, 1976 |
| 3960360 |
Internally pressurized load supporting mast |
Jun. 1, 1976 |
|
|
|
