Holddown bar for a hatch cover of a railroad car

Railway rolling stock – Special car bodies – Freight

Patent

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Details

B61D 3900

Patent

active

046025685

ABSTRACT:
A holddown bar for a hatch cover of a railroad car or the like is provided, the holddown bar having opposed ends one of which has a hinge unit that is adapted to be pivotally mounted to the car and the other of which has a latch unit that is adapted to be releasably latched to the car while a medial portion thereof intermediate the opposed ends is adapted to extend across the hatch cover and carries a sealing gasket in a channel thereof that is adapted to engage against the hatch cover. The opposed ends and medial portion of the holddown bar comprise a one-piece member formed of a relatively rigid polymeric material and has a reinforcing unit therein. The reinforcing unit comprises a substantially rigid member disposed in the polymeric material and having opposed ends one of which comprises the hinge unit for the holddown bar and the other of which is disposed in at least part of the polymeric material that defines the latch unit of the holddown bar, the rigid member having a medial portion extending between the ends thereof and being disposed in the polymeric material that defines the medial portion of the holddown bar.

REFERENCES:
patent: 3082022 (1963-03-01), Moore
patent: 3470598 (1969-10-01), Berthelsen
patent: 3645573 (1972-02-01), Strang
patent: 4239008 (1980-12-01), Conlon
patent: 4261479 (1981-04-01), Caserta
patent: 4270668 (1981-06-01), Berfield
patent: 4378742 (1983-04-01), Saylor et al.
patent: 4440814 (1984-04-01), Wolters
Admitted Prior Art to Applicants of Copending Patent Application, Ser. No. 412,416, filed Aug. 27, 1982--Clark et al.

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