Bridges – Gangway – ramp – or dock leveler
Patent
1985-09-13
1986-12-16
Novosad, Stephen J.
Bridges
Gangway, ramp, or dock leveler
14 711, E01D 100, E01D 900
Patent
active
046285610
ABSTRACT:
A compact ramp construction includes a series of nestable, telescopically extendable modules which are connected via an intermediate module to a base that detachably anchors one end of the ramp to a loading surface and which storably supports the ramp when the modules are nested. In one embodiment, the intermediate module is slidably connected to a pair of inclined slots on the base which raises the intermediate module to clear an edge of the loading surface as the nested modules are telescopically extended and lowered to another surface. Each one of the nestable modules has a pair of parallel side members that are spaced apart by an attached overlapping cross member. A single lug attached to the free end of each side member slidably engages an uppermost surface of a corresponding side member in an adjacent module and cooperates with the cross member of that module to support a load. In another embodiment, the intermediate module is hingedly connected to the base such that when the modules are nested, the ramp is stored by being pivoted about its hinges to lie folded against the base. Instead of a lug at the free end of each side member, the free ends of a second cross member in each module partly overlie corresponding side members of an adjacent module and cooperate with the first cross member thereof to support the load. All of the cross members provide a series of steps in a plane between loading and unloading surfaces.
REFERENCES:
patent: 606520 (1898-06-01), Darrah
patent: 3642156 (1972-02-01), Stenson
patent: 4429766 (1984-02-01), Alimbau Marques
patent: 4460291 (1984-07-01), Lamendour
patent: 4571144 (1986-02-01), Guidry et al.
Novosad Stephen J.
Sakovich Michael M.
Smith Matthew
Universal Ramps Limited
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