Bridges – Gangway – ramp – or dock leveler
Reexamination Certificate
2008-09-03
2010-10-12
Addie, Raymond W (Department: 3671)
Bridges
Gangway, ramp, or dock leveler
C414S540000, C414S541000
Reexamination Certificate
active
07810198
ABSTRACT:
The present invention is directed to a wheelchair lift apparatus (1) for mounting to a vehicle, e.g., to a bus or a railway car, comprising a platform (2) having a bridge plate (3) pivotally hinged thereon, said platform (2) being retained by at least one carriage (5), said carriage (5) being carried for travel into and out of a housing (50) of the vehicle, said carriage (5) with the platform (2) being connected by two hinge arms (4) disposed on either side of the platform, said carriage (5) comprising at least one drive (6) for connection to the hinge arms (4), said bridge plate being pivotally carried in the platform (2) through a pivot axis (20), a push rod linkage (10), which is positively coupled at one end to the at least one hinge arm (4) and which is connected for rotation of the pivot axis (20) to the pivot axis (20) of the bridge plate (3) at the other end being provided, a limit stop (30) acting onto the pivot axis (20) being provided, said limit stop being spring-loaded for the bridge plate (3) to be swung open by the spring-loaded limit stop when the ramp platform is deployed.
REFERENCES:
patent: 4219104 (1980-08-01), MacLeod
patent: 5040936 (1991-08-01), Rhea
patent: 6039528 (2000-03-01), Cohn
patent: 6102648 (2000-08-01), Fretwell et al.
patent: 6179545 (2001-01-01), Petersen et al.
patent: 2004/0228713 (2004-11-01), Cohn et al.
patent: 1021891 (2002-11-01), None
patent: 94/27546 (1994-12-01), None
Heckel Alexander
Sahr Christian
Addie Raymond W
Huber Transportation GmbH
Vigil Thomas R.
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