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5671496 Portable wheel chair ramp  
A wheel chair ramp comprises a plurality of leaves extending in the direction of intended use of the ramp. The leaves are joined together by flexible hinges so that the leaves may be folded to a...
5657716 Signaling device for a dock leveler system  
A signaling system includes a rotatable arm connected to a dock. One end of the arm has secured thereto two signaling paddles of distinct visual indicia. The other end of the arm is biased against...
5640733 Loading bridge for ramps  
The loading bridge for ramps has a bridge plate having a forward and a rearward end. It is connected with the rearward end to the ramp so as to be pivotable about a horizontal axis. An extension...
5634228 Mobility aid ramp  
A mobility aid ramp comprised of an elongated middle ramp comprising a first section and a second section, a pair of elongated outer ramps comprised a first section and a second section, and a...
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...
5608937 Portable ramp  
A portable ramp for providing a bridge between a ground level surface and a raised surface. The ramp includes a support plate having a substantially horizontal first portion adapted to rest along...
5599235 Collapsible skate ramp  
A collapsible ramp for providing aerial lift for inline skates, skateboards, bicycles and the like made of at least two lateral sections which are attached wherein the sections include a base for...
5598594 Spill containment ramp  
A ramp for loading containers on or loading containers from an elevated surface provides a collection space for containing spillage on the ramp. The ramp is wedge-shaped and has an upper inclined...
5598595 Trailer ramp mechanism  
A mechanism is provided for attachment to a pivotable ramp of a trailer to assist in the manual lifting and lowering of the ramp. The mechanism allows the tension of a pair of coil springs...
5586355 Safety device for a vertically stored dock leveler  
A vertically storing dock leveler comprises a deck, a pivot coupling the leveler to the mounting pit to allow the deck the rotate from a stored vertical position to an operative horizontal...
5546623 Maintenance strut for dock leveler  
A maintenance strut assembly for supporting a dock leveler in a maintenance position, the leveler being disposed above a dock platform surface and including a receiving opening, the strut assembly...
5535470 Sideways slidably mounted wheelchair access pathways  
A sideways slidable pathway system for wheelchair users that permits the temporary deployment of pathways to allow the transit of a wheelchair with a person therein over a stair or stairway...
5524310 Modular halfpipe skateboard ramp and method of constructing  
A portable halfpipe and method for quickly constructing the same is disclosed. The portable halfpipe includes a left arcuate module, a right arcuate module, and preferably, an intermediate planar...
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  
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...
5522107 Retaining arrangement for an inflatable member in a dock leveler  
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...
5517708 Community pathway access system for wheelchair users  
An access pathway is provided as a device that may be temporarily or portably deployed for wheelchair users accompanied by an assistant. The device, which is a pathway that may be carried by the...
5505237 Aircraft refuelling installation  
In order to carry out the refuelling of an aircraft, use is made of an installation associated with the loading bridge used for the transfer of passengers between the air terminal and the...
5499419 Facilitator for assisting wheelchair challenged persons up and/or down inclines traversed by a pathway access system  
An improvement in apparatus for assisting the transit of a person seated in a chair transport device in either direction between a lower level and an upper level in which a longitudinally extended...
5494393 Truck-mounted, vehicle carrier apparatus  
A vehicle carrier apparatus, that is adapted to be mounted on a first side wall and a second side wall of a transporter vehicle, includes a framework assembly that is screw clamped onto the side...
5483715 Vehicle service ramp  
A vehicle service ramp comprising a unitary ramp having an external structure including a rear wall, a pair of side walls and a front. The front includes a surface sloping upward to a top flat...
5481773 Ramp bridging member  
The ramp bridging member has a bridge plate connected to ramp so as to be pivotable about a horizontal axis It has a free end. An extension with a substantially vertical leg 14 is provided with...
5475888 Lip lifting mechanism for a dock leveler  
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...
5467493 Support plates for bridges and ramps  
A support plate for bridges and ramps having a roadway or a walkway has two longitudinal supports defining lateral sides of the support plate in the longitudinal direction of the support plate. A...
5457837 Portable tracks for a wheelchair  
A portable track device for a wheelchair includes at least two track sections which can be coupled removably to each other, and each track section has a bottom channel between a right sidewall and...
5457838 Extendible dock leveler  
A dock leveler for providing a bridge into the rear end of a truck trailer over which a fork vehicle can travel in loading the truck trailer. The dock leveler includes a ramp with a rear section...
5454196 Inclinable stairway  
An inclinable stairway for providing a staircase in one orientation and a ramp in another orientation comprising a pair of spaced, opposed, and upwardly extended side walls, each side wall having...
5452489 Dock leveler with automatic end barrier  
A dock leveler is mounted in a pit formed in the floor of the loading dock area of a factory, warehouse or similar facility. The loading dock includes an overhead door adjacent the dock leveler....
5450643 Edge-of-dock leveler  
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...
5446937 Modular ramp system  
A modular ramp system for use with a threshold which has an offset. The modular ramp system includes a number of elements which may be arranged in various combinations in order to conform to...
5444885 Platform edge warning ramp  
A stationary inclined platform is positioned along the edge of a train platform such that train passengers approach the edge of the train platform will notice the sudden uphill orientation of the...
5440772 Vehicle-activated safety leg control system for a dock leveler assembly  
A vehicle-activated support assembly control system is provided which comprises a sensor assembly which senses the position of the vehicle relative to the dock leveler and an actuation assembly...
5440773 Foldable ramp  
A foldable ramp includes first and second sections longitudinally aligned with each other and joined by a hinge assembly permitting the sections to be pivoted to a working position in which the...
5421052 Transition protector for a telescopic gangway  
A transition protector for telescopic gangways with a bellows having one end fixed to a rigid passageway and another end which can be brought to a door opening in the fuselage wall of an aircraft,...
5418992 Support plate for bridges and ramps  
A support plate for a bridge or ramp with a drive lane has two longitudinal supports forming lateral sides of the support plate. A plurality of transverse members is arranged parallel to one...
5414886 Pneumatic floor supports for portable platforms  
Movable ground supports, which are folded out either manually or hydraulically, are arranged at the tip of the launching support in devices for laying collapsible bridges. An inflatable container...
5402546 Access facilitating system for chair assisted passengers embarking or disembarking a small aircraft  
Access means for chair carried passengers embarking or disembarking an aircraft in which a pair of separate spaced-apart longitudinally extended pathways are disposed to traverse a stairway...
5400733 Boat ramp  
A launching ramp for boats, float planes and the like has several ramp segments that are in normal use of the ramp, generally aligned and sloping downwardly into a body of water. To enable the...
5400846 Tire chain ramp  
A tire chain ramp member in cooperation with a tire chain assembly is arranged to receive the cross link portion of the tire chain within a groove directed into the top wall of the ramp structure....
5394583 Self-loading ramp for a wheeled vehicle  
A ramp for loading and unloading vehicles includes an elevated track assembly. A ramp assembly is mounted on the track assembly. The ramp has wheel support surfaces extending substantially an...
5393192 Underfloor extendible ramp for vehicles  
The disclosure comprises a tray mountable under the floor of a vehicle, which tray contains an extendible ramp mechanism. This mechanism comprises a ramp and a driving panel for the ramp. The ramp...
5381575 Bridge docking structure for aircraft  
A system for servicing and maintaining an aircraft includes a fuselage dock assembly having a first ground-supported column, a second ground-supported column and a walkway section supported by the...
5359746 Ramp junction  
An apparatus for spanning the distance between a fixed first platform and a ovable second platform includes a ramp; a first pivoting junction located between one end of the ramp and the fixed...
5347672 Portable, stowable knock-down ramp  
Several elongated tread plates are pivotally connected together to form the central load-bearing portion of a ramp. Rigid side rails can be latched to the assembly of tread plates to maintain the...
5341533 Modular ramp  
A modular ramp comprises multiple sections which, except for height, have the similar cross-section and length along the ramp. Each modular section has a groove on one edge and a lip on the oppose...
5325558 Wheelchair ramp apparatus  
A wheelchair ramp structure is arranged to include first and second U-shaped tracks hingedly mounted relative to one another cooperative and parallel to third and fourth U-shaped tracks, wherein...
5317775 Hold-down mechanism for a loading platform  
The invention relates to a hold-down mechanism for loading platforms of loading ramps with a platform on their end towards the ramp, which is pivotable around a horizontal shaft, and having an...
5306112 Dock-aid  
A loading dock-aid is described that facilitates the lifting and placing of heavy dock plates between the edge of a dock and the back end of a delivery truck. The dock-aid has a lifting boom with...
5305486 Vehicle passenger boarding system  
A ramp stowable beneath the floor of a vehicle is normally power driven between retracted and extended positions. The drive, or propelling, mechanism for the ramp provides for the ramp to be...
5295759 Snow plow compatible speed bumps  
A speed bump for use in connection with highways located in climates where snow plow is used to clear the highways includes a raised mass fabricated from highway construction material. The raised...
5277436 Combination hand truck and stair ramp  
In combination, a hand truck having a unidirectional wheel control ratchet and an adjustable length stair ramp are operable for transporting heavy loads of cargo up flights of stairs. A ratchet...