Manual hydraulic dock board hold down arrangement

Bridges – Gangway – ramp – or dock leveler – Attached

Patent

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Details

E01D 100

Patent

active

056470819

ABSTRACT:
A hydraulic hold down locking cylinder is disclosed by replacing mechanical lock arrangements commonly used on less expensive dock boards. This arrangement provides superior performance, reliability, and lower maintenance. In the preferred form all components are provided in a cylindrical casing which is mounted as a variable length locking link in the dock board.

REFERENCES:
patent: 3656199 (1972-04-01), Bregantin
patent: 4091488 (1978-05-01), Artzberger
patent: 4619008 (1986-10-01), Kovach et al.
patent: 5551113 (1996-09-01), Marler et al.

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