Patents in subclass Bridges/Hydraulic Powered
Parent class: Bridges
| Number | Patent title | Issue Date |
|---|---|---|
| 07380305 | Loading dock system with biodegradable fluid A hydraulic system for operating dock levelers, vehicle restraints, and other types of loading dock equipment includes one or more features that prolong the life of the hydraulic fluid. A hydraulic reservoir with a desiccant filled... |
06/03/2008 |
| RE039404 | Movable loading bridge having an inflatable flexible body The invention concerns a loading bridge for making a connection between a loading platform and a vehicle, wherein the height of the bridge is variable at the side of the vehicle to allow for vehicles with different heights. A gas-operated... |
11/21/2006 |
| 07039978 | Flexible over the wing passenger loading bridge Disclosed is an apparatus for moving passengers between an airport terminal building and a doorway of an aircraft located rearward of a wing of the aircraft. The apparatus includes a first passageway member pivotally coupled at an inboard... |
05/09/2006 |
| 06931687 | Flexible over the wing passenger loading bridge Apparatus for moving passengers between an airport terminal building and a doorway of an aircraft located rearward of a wing of the aircraft which includes a passageway member pivotally anchored to one of the terminal building and a... |
08/23/2005 |
| 06923140 | Boat access stairway A boat access stairway having a landing attachable to a pier, a ramp which can be raised, lowered and slewed and a platform at the free end of the ramp whose orientation relative to a boat positioned parallel to the pier remains the same... |
08/02/2005 |
| 06820296 | Flexible over the wing passenger loading bridge A novel apparatus for moving passengers between an airport terminal building and a doorway of an aircraft located rearward of a wing of the aircraft. The inventive apparatus includes a passageway member pivotally anchored to one of the... |
11/23/2004 |
| 06789286 | Flexible over the wing passenger loading bridge An apparatus for moving passengers between an airport terminal building and a doorway of an aircraft located rearward of a wing of the aircraft, including a passageway member pivotally anchored to one of the terminal building and a... |
09/14/2004 |
| 06698052 | Hydraulically assisted restraint device A device for restraining the upward movement of a dock comprising a hydraulic cylinder having a fixed end; a piston slideably disposed in the cylinder so as to define opposed first and second chambers; a rod having one end connected to... |
03/02/2004 |
| 06526615 | Flexible over the wing passenger loading bridge Apparatus for moving passengers between an airport terminal building and a doorway of an aircraft located rearward of a wing of the aircraft, including a passageway member pivotally anchored to one of the terminal building and a passenger... |
03/04/2003 |
| 06516487 | Dockleveler with a barrier A dockleveler having a lip that can be both moved between a pendent inoperative position and an operative position and moved from a retracted to an extended position. This feature allows the lip to be partially extended during an end load... |
02/11/2003 |
| 6502267 | Conveyor crossover A conveyor crossover has a pivotable ramp which is moved from a horizontal bridging position across a conveyor to an upright position is which it is out of the way of material being moved by the conveyor. The ramp is raised and lowered by... |
01/07/2003 |
| 06502267 | Conveyor crossover A conveyor crossover has a pivotable ramp which is moved from a horizontal bridging position across a conveyor to an upright position is which it is out of the way of material being moved by the conveyor. The ramp is raised and lowered by... |
01/07/2003 |
| 06499169 | Recycle control system for dock levelers A recycling control system for a dock leveler including a pivotally mounted deck. There is a powered lifting mechanism for raising the deck and a lip pivotally mounted to the deck for movement between pendant and extended positions. The... |
12/31/2002 |
| 06405397 | Loading dock with segmented wide lip A dock leveler that is mounted in a recessed pit and having a deck as wide as necessary to provide access to the transport vehicle. A lip is mounted to the front of the deck of the leveler and pivoted in a conventional manner. At each... |
06/18/2002 |
| 06386819 | Self-powered elevationally adjustable foldable ramp for draft vehicles An elongated hydraulically foldable and elevationally adjustable ramp connectable to a draft vehicle and including leading and trailing ramp sections that are pivotally joined and foldable between an inclined loading position and an... |
05/14/2002 |
| 06368043 | Low-profile truck leveler A truck leveler includes a low-profile traffic surface that is pivotally mounted to a driveway approach in front of a loading dock. Pivoting the leveler raises a reat portion of a truck or trailer to the height of the dock. The truck... |
04/09/2002 |
| 06360393 | Method for converting a dock leveler to a dock leveler operated with an inflatable member and a dock leveler produced by the same A method and conversion kit for converting a non-inflatable dock leveler having a lifting mechanism to an inflatable bag dock leveler. The method includes removing the lifting mechanism from the non-inflatable dock leveler and coupling an... |
03/26/2002 |
| 06327733 | Mechanically actuated dock leveler with hydraulic assist A pit type dock leveler having a frame adapted to be fixedly mounted at a dock with a deck, pivotedly mounted to the frame at one end thereof, and having a pivotable lip at the other end. A spring is mounted to the deck and the frame to... |
12/11/2001 |
| 06311352 | Self-unlatching dock leveler lip with dampened descent A dock leveler ramp with a lip that can be latched in an extended position to ensure that the lip comes to rest upon the back end of a vehicle as the ramp descends includes an unlatching mechanism. The mechanism positively unlatches the... |
11/06/2001 |
| 06179545 | Flip-over ramp A flip-over ramp assembly is normally stowed in a horizontal position in a recess in a vehicle floor, and can be pivoted upward and outwards to a downward sloping deployed position, after the vehicle door has been opened. The flip-over... |
01/30/2001 |
| 6085375 | Lip guiding mechanism for dock levelers A lip guiding mechanism is disclosed for use with a dock leveler having a deck which is pivotally movable with respect to a loading dock, a lip which is pivotally attached to a front of the deck, and a lip keeper which is positioned to... |
07/11/2000 |
| 6065172 | Hydraulic control circuit A hydraulic control circuit for a dock leveler which includes a deck pivotable between stored and raised positions and a lip pivoted to the deck for movement between pendant and extended positions is disclosed. The hydraulic control... |
05/23/2000 |
| 5996156 | Dock leveler raised by deflating an inflatable member A dock leveler including a ramp having a rear edge movably interconnected with a loading dock, an intermediate member movable relative to the ramp, and an inflatable assembly positioned to cause relative movement between the ramp and the... |
12/07/1999 |
| 5881414 | Loading dock with adjustable bumpers An adjustable bumper system for use at a loading dock which has a dock leveler having a deck pivotally mounted to a portion of the dock. The dock leveler has a lip pivotally attached to one end of said deck. The bumper system has a pair... |
03/16/1999 |
| 5851099 | Adjustable cargo platform assembly This invention relates to a ramp design permitting the positioning of a cargo ramp floor at any angle or height, which is integral with the aircraft such that it can be aligned to a vehicle transferring the load. The adjustable cargo... |
12/22/1998 |
| 5816767 | Transport locking system for movable-deck vehicle A transport locking system for a movable-deck trailer includes a telescoping sleeve which is positioned in parallel with a main deck piston and cylinder unit beneath the trailer deck. The main cylinder and the telescoping sleeve are... |
10/06/1998 |
| 5802650 | Dock leveler having an inflatable member A dock leveler including a ramp having a rear edge movably interconnected with a loading dock, an intermediate member movable relative to the ramp, and an inflatable assembly positioned to cause relative movement between the ramp and the... |
09/08/1998 |
| 5802651 | Dock leveler with a movable ramp and an inflatable member A dock leveler comprising a ramp movable between a lowered position and a raised position, an inflatable member positioned to move the ramp to its raised position upon inflation of the inflatable member, and an inflating device... |
09/08/1998 |
| 5791003 | Method and apparatus for variably elevating a passenger boarding bridge platform An apparatus for variably elevating passenger boarding bridge platforms includes a tunnel (11) having a pivoting end (21) adjacent a fixed platform (7) and a free end (52) adjacent a variable platform (42). The tunnel has a ceiling (15)... |
08/11/1998 |
| 5762460 | Truck leveler A loading dock having a truck leveler for allowing the truck to be positioned at different heights. The loading dock includes a dock surface, a driveway extending from the dock surface and positioned at a level below the dock surface, and... |
06/09/1998 |
| 5678984 | Detachable folding trailer ramp A ramp for flatbed trucks and trailers which may be attached or removed from the vehicle in a matter of seconds and requires no modification of the trailer. The invention utilizes two ramp sections which are pivotally secured together by... |
10/21/1997 |
| 5651155 | Support mechanism for a dockleveler lift bag A support and attachment mechanism for a dock leveler lift bag. The dock leveler includes a supporting structure which is mounted in a pit in a loading dock and the rear end of a ramp is pivoted to the supporting structure so that the... |
07/29/1997 |
| 5651656 | Rail transportable ramps for loading semi-trailers on trains A ramp car for use in an intermodal train includes a ramp having a set of rail wheels mounted at one end and a connector at the one end for coupling the ramp car to a flat bed rail car. A second connector, including lifting apparatus, is... |
07/29/1997 |
| 5647081 | Manual hydraulic dock board hold down arrangement A hydraulic hold down locking cylinder is disclosed by replacing mechanical lock arrangements commonly used on less expensive dock boards. This arrangement provides superior performance, reliability, and lower maintenance. In the... |
07/15/1997 |
| 5621938 | Edge-of-dock leveler and method of making An edge-of-dock leveler incorporating an inflatable lift bag. The leveler includes a frame mounted on the front face of the dock and the rear edge of a deck plate is hinged to the frame, while a lip is hinged to the forward edge of the... |
04/22/1997 |
| 5600859 | Dock leveler in which the ramp is raised and lowered using an inflatable member and method of use A dock leveler including a ramp movable between a raised position and a lowered position is moved to its raised position by inflation of an inflatable member, such as an airbag supported beneath the ramp by a support assembly. The support... |
02/11/1997 |