Bridges – Gangway – ramp – or dock leveler – Attached
Patent
1975-05-15
1976-08-17
Byers, Nile C.
Bridges
Gangway, ramp, or dock leveler
Attached
B65G 1100
Patent
active
039745376
ABSTRACT:
A lip extender for use with a loading dock leveler. The lip extender includes a lower link connected at its lower end to the base plate of the leveler and a toggle arm connected at its upper end beneath the lip. The opposite ends of the toggle arm and lower link are pivotally connected together. Upward movement of the hinge connection between the bridge plate and lip moves them both upwardly to a cocked position in which they are supported by the toggle arm and lower link, which pivot into an over-center position. Downward force exerted on the upper part of the bridge plate causes a cam follower carried by the pivotal connection between the toggle arm and lower link to engage a cam surface mounted beneath the bridge plate. The lip is thereby extended simultaneously upwardly and outwardly over the rear edge of a truck disposed adjacent to the dock. When the lip reaches its fully extended position, the toggle arm moves past the center position and allows the lip to drop onto the truck bed.
REFERENCES:
patent: 3327335 (1967-06-01), Beckwith
patent: 3460175 (1969-08-01), Beckwith
patent: 3493984 (1970-02-01), Reinhard
patent: 3584324 (1971-06-01), Merrick
patent: 3662416 (1972-05-01), Brooks
patent: 3685077 (1972-08-01), Wiener
patent: 3728753 (1973-04-01), Beckwith
Ellis Lawrence D.
Evans Robert E.
Byers Nile C.
Comstock Robert C.
Ellis Industries, Inc.
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