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Class Information
Number: 14/71.7
Name: Bridges > Gangway, ramp, or dock leveler > Attached > With lift means > Hydraulic powered
Description: Bridging structure wherein the repositioning means includes a fluid actuated motor as a prime mover.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7380305 |
Loading dock system with biodegradable fluid |
Jun. 3, 2008 |
| RE39404 |
Movable loading bridge having an inflatable flexible body |
Nov. 21, 2006 |
| 7039978 |
Flexible over the wing passenger loading bridge |
May. 9, 2006 |
| 6931687 |
Flexible over the wing passenger loading bridge |
Aug. 23, 2005 |
| 6923140 |
Boat access stairway |
Aug. 2, 2005 |
| 6820296 |
Flexible over the wing passenger loading bridge |
Nov. 23, 2004 |
| 6789286 |
Flexible over the wing passenger loading bridge |
Sep. 14, 2004 |
| 6698052 |
Hydraulically assisted restraint device |
Mar. 2, 2004 |
| 6526615 |
Flexible over the wing passenger loading bridge |
Mar. 4, 2003 |
| 6516487 |
Dockleveler with a barrier |
Feb. 11, 2003 |
| 6502267 |
Conveyor crossover |
Jan. 7, 2003 |
| 6499169 |
Recycle control system for dock levelers |
Dec. 31, 2002 |
| 6405397 |
Loading dock with segmented wide lip |
Jun. 18, 2002 |
| 6386819 |
Self-powered elevationally adjustable foldable ramp for draft vehicles |
May. 14, 2002 |
| 6368043 |
Low-profile truck leveler |
Apr. 9, 2002 |
| 6360393 |
Method for converting a dock leveler to a dock leveler operated with an inflatable member and a dock leveler produced by the same |
Mar. 26, 2002 |
| 6327733 |
Mechanically actuated dock leveler with hydraulic assist |
Dec. 11, 2001 |
| 6311352 |
Self-unlatching dock leveler lip with dampened descent |
Nov. 6, 2001 |
| 6179545 |
Flip-over ramp |
Jan. 30, 2001 |
| 6085375 |
Lip guiding mechanism for dock levelers |
Jul. 11, 2000 |
| 6065172 |
Hydraulic control circuit |
May. 23, 2000 |
| 5996156 |
Dock leveler raised by deflating an inflatable member |
Dec. 7, 1999 |
| 5881414 |
Loading dock with adjustable bumpers |
Mar. 16, 1999 |
| 5851099 |
Adjustable cargo platform assembly |
Dec. 22, 1998 |
| 5816767 |
Transport locking system for movable-deck vehicle |
Oct. 6, 1998 |
| 5802651 |
Dock leveler with a movable ramp and an inflatable member |
Sep. 8, 1998 |
| 5802650 |
Dock leveler having an inflatable member |
Sep. 8, 1998 |
| 5791003 |
Method and apparatus for variably elevating a passenger boarding bridge platform |
Aug. 11, 1998 |
| 5762460 |
Truck leveler |
Jun. 9, 1998 |
| 5678984 |
Detachable folding trailer ramp |
Oct. 21, 1997 |
| 5651656 |
Rail transportable ramps for loading semi-trailers on trains |
Jul. 29, 1997 |
| 5651155 |
Support mechanism for a dockleveler lift bag |
Jul. 29, 1997 |
| 5647081 |
Manual hydraulic dock board hold down arrangement |
Jul. 15, 1997 |
| 5621938 |
Edge-of-dock leveler and method of making |
Apr. 22, 1997 |
| 5600859 |
Dock leveler in which the ramp is raised and lowered using an inflatable member and method of use |
Feb. 11, 1997 |
| 5560733 |
Gas pre-charged mass counterbalancing |
Oct. 1, 1996 |
| 5551113 |
Manual hydraulic dock board hold down arrangement |
Sep. 3, 1996 |
| 5544381 |
Dock leveler hydraulic circuit |
Aug. 13, 1996 |
| 5526545 |
Automatic return to dock mechanism |
Jun. 18, 1996 |
| 5522108 |
Dock leveler having a ramp movable to a raised position by inflation of an inflatable member, with a filler for occupying volume within the inflatable member |
Jun. 4, 1996 |
| 5522107 |
Retaining arrangement for an inflatable member in a dock leveler |
Jun. 4, 1996 |
| 5511267 |
Dock leveler hydraulic circuit |
Apr. 30, 1996 |
| 5500968 |
Dock leveler incorporating an inflatable bag |
Mar. 26, 1996 |
| 5490754 |
Hydraulic upper deck ramp for a trailer |
Feb. 13, 1996 |
| 5481774 |
Support mechanism for a dockleveler lift bag |
Jan. 9, 1996 |
| 5460460 |
Scissors lift dock leveler |
Oct. 24, 1995 |
| 5452489 |
Dock leveler with automatic end barrier |
Sep. 26, 1995 |
| 5416941 |
Dockboard having an improved return-to-dock-level mechanism |
May. 23, 1995 |
| 5274867 |
Hydraulically operated edge-of-dock leveler |
Jan. 4, 1994 |
| 5253381 |
Hinged cargo ramp |
Oct. 19, 1993 |
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