| Patent Number |
Title Of Patent |
Date Issued |
| RE34360 |
Bi-fold door construction |
August 31, 1993 |
| An industrial door comprising a pair of side panels and a pair of central panels with each central panel having approximately twice the horizontal width of a side panel. The upper end of one side edge of each side panel is pivoted to the jamb of a doorway, while the upper end of the oppo |
| RE30250 |
Electromechanically operated dockboard |
April 8, 1980 |
| An electromechanically operated dockboard. The dockboard includes a ramp hinged at its rear edge to a supporting frame and the ramp is adapted to be moved from a generally horizontal cross traffic position to an upwardly inclined position by operation of a recirculating ball screw unit, |
| 6820295 |
Support leg moving apparatus and method |
November 23, 2004 |
| A support leg system for a dock leveler includes a support leg with a striker surface configured to engage a slider bar. When the striker engages the slider bar at a slow speed, the striker will slide down the slider bar and retract the support legs. However, when the striker engages |
| 6760944 |
Dock leveler having an inflatable member |
July 13, 2004 |
| A loading dock including a dock surface and a supporting structure positioned within a pit in the dock surface. The loading dock also includes a ramp, an inflatable assembly, and a support. The ramp is pivotally coupled to the supporting structure, and the inflatable assembly is posi |
| 6711774 |
Dock leveler having an inflatable member |
March 30, 2004 |
| A dock leveler for use in a loading dock. The dock leveler includes a ramp, an inflatable assembly, and a gas moving device. The ramp includes an undersurface and is pivotal between a generally horizontal lowered position and an upwardly-inclined, raised position. The inflatable asse |
| 6643880 |
Dock leveler |
November 11, 2003 |
| 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 intermediate member upon inflation of the inflatab |
| 6629328 |
Universal lip lifting device |
October 7, 2003 |
| A dock leveler includes a frame, a ramp, a lip, and a linkage. The ramp is rotatably coupled to the frame for rotation between a substantially horizontal first position and an inclined second position. The lip is coupled to the ramp for rotation between a pendent position and an exte |
| 6585211 |
Wheel chocking device and method for using the same |
July 1, 2003 |
| A wheel chocking device (13) having a wheel chock (34) that can be raised from a retracted position to a raised position. In the retracted position, the wheel chock (34) is substantially flat, thereby allowing a truck (36) to be driven over the wheel chock (34). In the raised position, t |
| 6478525 |
Wheel chocking device and method for using the same |
November 12, 2002 |
| A wheel chocking device having a wheel chock that can be raised from a retracted position to a raised position. In the retracted position, the wheel chock is substantially flat, thereby allowing a truck to be driven over the wheel chock. In the raised position, the wheel chock can be |
| 6460212 |
Dock leveler having an inflatable member |
October 8, 2002 |
| A dock leveler including a ramp having a rear edge movably interconnected with a loading dock and an inflatable assembly positioned to cause movement of the ramp inflation of the inflatable assembly. There is a support positioned under the inflatable assembly. The support is movably |
| 6431252 |
Curtain for a vehicle shelter and method for making the same |
August 13, 2002 |
| A curtain for a dock shelter that is easily assembled alone and as part of a dock shelter. The curtain includes a sheet that has a pocket mounted thereon. The pocket is adapted to receive a flexible stay and include a slit that inhibits movement of the stay within the pocket. In another |
| 6374554 |
Vehicle shelter |
April 23, 2002 |
| The present invention provides a flexible frame for a loading dock shelter. The flexible frame utilizes open channels that are clinched together to serve as supports. The supports are used in side frames that form part of the flexible frame. Each side frame includes a back support, a fro |
| 6371714 |
Vehicle restraint and method for modifying the same |
April 16, 2002 |
| A vehicle restraint comprising a base member (e.g., a track), a carriage movably mounted to the base member, and a restraining member (e.g., a pivotable hook) mounted to the carriage and movable between and engaged position and a disengaged position. The restraining member is biased |
| 6360393 |
Method for converting a dock leveler to a dock leveler operated with an inflatable member and a |
March 26, 2002 |
| 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 inflatable lifting assembly to the non-inflatable |
| 6357987 |
Powered wheel chock with folding supports |
March 19, 2002 |
| A wheel-chocking device including a base member and a collapsible chock movable between lowered and raised positions. The chock includes a chocking member movable relative to the base member, and support members pivotably attached to the chocking member and defining therewith pivot a |
| 6317914 |
Dockleveler holdown mechanism and method for installing the same |
November 20, 2001 |
| A dockleveler comprising a support structure adapted to be mounted to a loading dock, a ramp connected to the support structure and movable between a raised position and a lowered position, a upward biasing mechanism connected to the ramp, and a holdown mechanism connected between th |
| 6276496 |
Wheel chocking device |
August 21, 2001 |
| A wheel chocking device including a longitudinally-extending base frame positioned on the driveway, a chock positioned on the base frame and movable longitudinally relative to the base frame, and a drive mechanism drivingly connected to the chock. The drive mechanism comprises a power |
| 6257372 |
Scissor lift and method for using the same |
July 10, 2001 |
| A scissor lift that achieves enhanced vertical travel of the deck for a given amount of horizontal travel of the legs. The enhanced vertical travel is achieved by overlapping the deck pivot point (i.e., the point at which a leg is pivotally connected to the deck) with the frame pivot poi |
| 6250432 |
Wheel chocking device and method for using the same |
June 26, 2001 |
| A method of securing a vehicle at a desired location using a wheel chocking device (30) having a chock (38) movable between a lowered position and a raised position. The method comprises the steps of positioning the vehicle at the desired location with the chock (38) in the lowered posit |
| 6240587 |
Fan-powered edge-of-dock leveler |
June 5, 2001 |
| An edge-of-dock leveler includes a deck plate hingedly interconnected to a dock, a lip plate hingedly interconnected to the deck plate, an air pan mounted on the face of the dock to allow the air pan to rotate with respect to the dock, and a blower mounted on the air pan. The blower |
| 6216303 |
Dock leveler having an improved support leg mechanism |
April 17, 2001 |
| A dock leveler having a ramp, a support leg for supporting the ramp, and an extension lip that is movably connected to the ramp. The support leg is capable of movement relative to the ramp from a supporting position to a retracted position, and the lip is movable to an extended position. |
| 6170205 |
Dock seal and method of producing the same |
January 9, 2001 |
| A dock seal for sealing the interface between a vehicle and a loading dock, including a resilient member and a flexible material embedded in the resilient member. The dock seal can be made by applying a liquid material over the resilient member and curing the liquid material to form a |
| 6170204 |
Vehicle shelter having channels |
January 9, 2001 |
| A vehicle shelter comprising a head frame, a head curtain attached to the head frame, a side frame, and a side curtain attached to the side frame. The head frame includes a head subframe having a first raked channel adapted to be mounted to a loading dock wall, a plurality of cross c |
| 6162005 |
Vehicle restraint with powered latching member |
December 19, 2000 |
| A loading dock and vehicle restraint assembly for securing a vehicle during loading operations. The vehicle restraint comprises a latching member (e.g., a hook) movable between an engaged position and a disengaged position, and an electromechanical brake coupled to the latching member |
| 6113337 |
Vehicle restraint |
September 5, 2000 |
| A vehicle restraint adapted to be used at a loading dock to restrain a vehicle during loading and unloading operations. The restraint includes a carriage adapted to be mounted to the loading dock, and a restraining member (e.g., a hook) connected to the carriage. The carriage is movable |
| 6098227 |
Fan-powered edge-of-dock leveler |
August 8, 2000 |
| An edge-of-dock leveler includes a deck plate hingedly interconnected to a dock, a lip plate hingedly interconnected to the deck plate, an air pan mounted on the face of the dock to allow the air pan to rotate with respect to the dock, and a blower mounted on the air pan. The blower |
| 6073402 |
Portable dock seal |
June 13, 2000 |
| A portable dock seal including a bottom portion adapted to be positioned on a surface, two side walls extending upward from opposing sides of the bottom portion at an angle of at least 20.degree. and less than 90.degree. relative to the bottom portion, and end walls interconnecting the b |
| 6019156 |
Roll-up door |
February 1, 2000 |
| An overhead door including a door panel vertically movable between a lowered position when the door is closed and a raised position when the door is open, and a motor drivingly connected to a lower end of the door panel to selectively drive the lower end of the door panel downwardly. The |
| 6016637 |
Dock seal and method of producing the same |
January 25, 2000 |
| A dock seal for sealing the interface between a vehicle and a loading dock, including a resilient member and a flexible material embedded in the resilient member. The dock seal can be made by applying a liquid material over the resilient member and curing the liquid material to form a |
| 5996156 |
Dock leveler raised by deflating an inflatable member |
December 7, 1999 |
| 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 intermediate member upon inflation of the inflatab |
| 5927928 |
Wheel chocking device |
July 27, 1999 |
| A loading dock having a dock face, a driveway positioned adjacent to the dock face, a wheel chock positioned above the driveway for movement relative to the driveway, and a power mechanism interconnected with the chock to provide power to the chock. The power mechanism is at least pa |
| 5802651 |
Dock leveler with a movable ramp and an inflatable member |
September 8, 1998 |
| 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 operatively connected with the internal cavity. The inflatab |
| 5802650 |
Dock leveler having an inflatable member |
September 8, 1998 |
| 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 intermediate member upon inflation of the inflatab |
| 5758705 |
Roll-up door |
June 2, 1998 |
| An overhead door including a door panel vertically movable between a lowered position when the door is closed and a raised position when the door is open, and a motor drivingly connected to a lower end of the door panel to selectively drive the lower end of the door panel downwardly. The |
| 5651155 |
Support mechanism for a dockleveler lift bag |
July 29, 1997 |
| 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 ramp is movable between a horizontal position and an |
| 5621938 |
Edge-of-dock leveler and method of making |
April 22, 1997 |
| 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 deck plate. In the storage position, the deck plate |
| 5600859 |
Dock leveler in which the ramp is raised and lowered using an inflatable member and method of us |
February 11, 1997 |
| 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 assembly is removably mounted below the ramp |
| 5564238 |
Safety gate for a loading dock |
October 15, 1996 |
| A safety gate to be mounted on a loading dock. The safety gate includes a pair of vertical columns which are mounted on the floor of the dock on either side of a doorway that can be enclosed by an overhead door. A barrier or beam is mounted for sliding movement on the vertical columns |
| 5522678 |
Ground anchors |
June 4, 1996 |
| Apparatus and method of forming a ground anchor to spread evenly the loads produced during, for example, pipe lining. The ground anchors comprise a frame and means for clamping the frame to upper ends of a series of ground engaging piles such that the frame and piles define a substantial |
| 5522108 |
Dock leveler having a ramp movable to a raised position by inflation of an inflatable member, wi |
June 4, 1996 |
| A dock leveler including a ramp is movable to a raised position by inflation of an inflatable member, such as an air bag assembly. One or more filler members are located within an internal cavity defined by the air bag assembly, to occupy void volume therein. The filler members exped |
| 5522107 |
Retaining arrangement for an inflatable member in a dock leveler |
June 4, 1996 |
| A dock leveler includes a ramp movable between a raised position and a lowered position in response to selective inflation of an inflatable member disposed between the ramp and a support located below the ramp, and an improved mounting arrangement for securing the airbag in position belo |
| 5500968 |
Dock leveler incorporating an inflatable bag |
March 26, 1996 |
| A dock leveler comprising a ramp hinged at its rear end to a supporting structure and movable between a generally horizontal position and an upwardly inclined position. A lip is hinged to the forward edge of the ramp and can be pivoted between a downwardly hanging pendant position and |
| 5481774 |
Support mechanism for a dockleveler lift bag |
January 9, 1996 |
| 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 ramp is movable between a horizontal position and an |
| 5475888 |
Lip lifting mechanism for a dock leveler |
December 19, 1995 |
| A lip lifting mechanism for the pivotable lip of a dock leveler moves the lip to an operative extended position as the ramp of the dock leveler is moved from a raised position toward a lowered position. The lip lifting mechanism includes a push bar, a lifting rod, a lug engageable with t |
| 5471693 |
Support and attachment mechanism for a dockleveler lift bag |
December 5, 1995 |
| An improved support and attachment mechanism for a dockleveler lift bag. The dock leveler includes a supporting structure or frame which is mounted in a pit in a loading dock and the pit has a forwardly sloping floor. The rear end of the ramp is pivoted to the supporting structure, so th |
| 5450643 |
Edge-of-dock leveler |
September 19, 1995 |
| 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 deck plate. In the storage position, the deck plate |
| 5446938 |
Bag construction for a dockleveler |
September 5, 1995 |
| An inflatable bag assembly for a dock leveler including a stack of superimposed bags which are joined together along contiguous surfaces. The interiors of the bags are connected to a suitable source of low pressure gas such as air. The stack of superimposed bags is positioned between a |
| 5416941 |
Dockboard having an improved return-to-dock-level mechanism |
May 23, 1995 |
| A dockboard having an improved return-to-dock-level mechanism. The dockboard includes a ramp having its rear edge hinged to the frame of the dockboard and a lip is hinged to the front edge of the ramp and is movable between a downwardly hanging pendant position and an extended position. |
| 5392481 |
Return-to-dock-level mechanism for a dockboard having a hydraulic holddown |
February 28, 1995 |
| A dockboard includes a ramp which is hinged at its rear edge to a loading dock and a lip is hinged to the front edge of the ramp and can be pivoted from a downwardly hanging pendant position to an extended position generally flush with the ramp surface. The ramp is moved from a horizonta |
| 5274867 |
Hydraulically operated edge-of-dock leveler |
January 4, 1994 |
| A hydraulically operated edge-of-dock dock leveler including a deck plate having its rear edge hinged to the dock and an extension lip is hinged to the front edge of the deck plate. In the storage position the deck plate is located in a generally horizontal position and the lip hangs dow |
