Railway rolling stock – Special car bodies – Sleeping
Patent
1974-07-31
1976-01-20
Sheridan, Robert G.
Railway rolling stock
Special car bodies
Sleeping
105282A, 105305, 105308B, B61D 720, B61D 722, B61D 726, B61D 732
Patent
active
039331008
ABSTRACT:
This application discloses a sliding gate the top surface of which is tapered so that as it is closed the top surface will compress against a first elastomeric sealing means to eliminate lading leakage, and move away from the lading as the gate is opened, reducing the force required to open the gate. A cam assist mechanism is combined with the inclined gate to further reduce the required opening torque. The gate may be mounted on rollers, which also aid to reduce the opening force required. However, a low friction track may also be utilized to support the gate. In addition to the first elastomeric sealing means, a second elastomeric sealing means may be provided, preferably spring-loaded, at the back edge of the gate to close the gap between the gate and the second sealing means when the gate is opened.
The gate may be fabricated from metal plates or utilize a honeycomb sandwich type of construction. The gate may be fabricated so that a rack which is part of the drive mechanism for the gate is imbedded in the honeycomb core so that the outer surface of the rack is flush with the bottom edge of the gate.
REFERENCES:
patent: 2750074 (1956-06-01), Dorey
patent: 3138117 (1964-06-01), Dorey
patent: 3387570 (1968-06-01), Pulcrano et al.
patent: 3397654 (1968-08-01), Snyder
patent: 3779172 (1973-12-01), Schipper et al.
patent: 3826203 (1974-07-01), Martin et al.
ACF Industries Incorporated
Beltran Howard
Cummings Henry W.
Sheridan Robert G.
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