Title: Dockboard apparatus

Abstract: A dockboard apparatus is disclosed in which a vertically displaceable chassis moves a pivotally mounted ramp between a vertical storing position and a horizontal working position. Skewing and binding of the chassis are prevented by a construction wherein a counterweight for the chassis is coupled to the chassis by first and second spaced hubs, such as chain sprockets, and first and second linkages, such as drive chains, connected between the chassis, hubs, and counterweight. To facilitate movement of the ramp into place, the support of the dockboard apparatus includes an upper support member having an upper rear part disposed substantially at the same level as the loading surface of the loading dock and an upper front part disposed substantially below the level of the upper rear part. This member may be embodied by an L-shaped beam with vertical and horizontal legs. The hubs are mounted on the upper front part, e.g., on the horizontal leg of the L-shaped beam. With this construction, the ramp may assume a pronounced forward, downward inclination from the loading surface of the loading dock during movement between the storing and working positions.

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Other info:

Inventors: Rosengren, Knut T. L. (243 00 Hoor, SE)

Application Number: 872877
Filing Date: 1978-01-27
Publication_date: 1979-02-06
Assignee:
Primary Class(es): 14/71.3
Other Classes:
US Patent Ref:

3426377	Feb, 1969	Bezkwith	14/71.
3440673	Apr, 1969	Kezley	14/71.
3596303	Aug, 1971	Kezley	14/71.
3806976	Apr, 1974	Yoon	14/71.
3840930	Oct, 1974	Waddell	14/71.

Other Refs:
Primary Examiner: Byers, Jr., Nile C.
Assistant Examiner:
Attorney: Mack; Peter G.