Railway rolling stock – Special car bodies – Freight
Patent
1985-08-15
1987-02-24
Reeves, Robert B.
Railway rolling stock
Special car bodies
Freight
220314, B61D 3900
Patent
active
046448748
ABSTRACT:
The present invention relates to a hatch cover for hopper cars, the hatch cover being made substantially of polymeric materials. The hatch cover of the invention comprises a lid having an inside and outside surface, a rim defining the edges of the inside surface, and a locking arm fixedly attached to the outside surface. A flat piece of metal is embedded in the lid having its geometric center substantially coincident with the geometric center of the lid to provide reinforcement therefor. The locking arm is reinforced with a steel channel for rigidity. The locking arm is attached to the lid using a single bolt which connects the channel of the locking arm with the flat piece of metal of the lid. A method of making the hatch cover is provided which comprises making the lid and the locking arm in the desired shape by reaction injection molding a polymeric material around the flat piece of metal and the channel respectively.
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Index of Plastic Technology, Mar. 1983.
The Car and Locomotive Cyclopedia, Simmons-Boardman, fourth edition, 1980.
Plastics Technology, Mar. 1983, pp. 37-44.
Dayco Products Inc.
Reeves Robert B.
Rodgers Dennis C.
Tassone Joseph V.
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