Material or article handling – Self-loading or unloading vehicles – Conveyor
Patent
1988-07-15
1990-02-13
Spar, Robert J.
Material or article handling
Self-loading or unloading vehicles
Conveyor
14 711, 296 26, B65G 6702
Patent
active
049002171
ABSTRACT:
The present invention provides a stowable, multiple grade ramping device particularly adapted for use in pick-up trucks. The ramping device includes a carrier assembly, an entryway extension unit and a ramp end section for loading and unloading cargo thereupon. The carrier assembly is advantageously equipped with an enclosed trackway having a beveled ramping guide for elevating track following guides mounted onto an entryway extension unit and an open trackway for engaging track following guides mounted onto the ramp end section. The cargo assembly beveled track guides impart an intermediate ramping grade to the entryway unit. The entryway unit is fitted with a pair of enclosed track guides. The ramp end section is equipped with track following guides slideably engaging onto the enclosed entryway track guides which permits the entryway unit and ramp end section to telescopically retract for effective stowage thereof.
REFERENCES:
patent: 3642156 (1972-02-01), Stenson
patent: 3870170 (1975-03-01), Noble et al.
patent: 4124131 (1978-11-01), Torneback
patent: 4527941 (1985-07-01), Archer
patent: 4601632 (1986-07-01), Agee
patent: 4624619 (1986-11-01), Uher
patent: 4628561 (1986-12-01), Kushniryk
patent: 4685857 (1987-08-01), Goeser et al.
Hendrickson M. Paul
Katz Robert S.
Spar Robert J.
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