Bridges – Gangway – ramp – or dock leveler – Attached
Patent
1988-07-12
1989-09-12
Bucci, David A.
Bridges
Gangway, ramp, or dock leveler
Attached
296 61, 414537, E01D 100, B65G 6702
Patent
active
048646733
ABSTRACT:
A collapsible ramp comprising an attachment frame, a foldable support structure mounted to the attachment frame by pivotable hinges, and a telescoping deck structure of interconnected, essentially rectangular plates. The foldable support structure has longitudinal support members with foldable joints intermediate along the lengths of the members, and these members are pivotally connected to the hinge. The ramp can be formed into an extended state in which the longitudinal support members are extended outwardly from the attachment frame and the rectangular plates of the telescoping deck structure are extended and supported on the support members. Alternatively, the ramp can be formed into a collapsed state in which the support members are folded back on themselves using the foldable joints and folded inwardly pivoting about the hinges so that the support members are housed within the attachment frame, the telescoping deck structure being retracted to cover the folded rails on the attachment frame.
REFERENCES:
patent: 3642156 (1972-02-01), Stenson
patent: 3713553 (1973-01-01), Curtis et al.
patent: 3737058 (1973-06-01), Johnson
patent: 3756440 (1973-09-01), Raap et al.
patent: 4294571 (1981-10-01), Tordella
patent: 4455119 (1984-06-01), Smith
patent: 4601632 (1986-07-01), Agee
patent: 4624619 (1986-11-01), Uher
patent: 4700421 (1987-10-01), Gladney et al.
Adaway David
O'Connell John
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