Plastic knuckle pin with annular relief grooves for preventing p

Details Plastic knuckle pin with annular relief grooves for preventing p Plastic knuckle pin with annular relief grooves for preventing p

1990-11-13

1992-09-08

Oberleitner, Robert J.

Railway draft appliances

Couplings

Counterpart

213156, 384624, 16386, B61G 304

Patent

active

051450763

ABSTRACT:
A plastic knuckle pin for a coupler on a railway car which accepts bending fatigue, eliminates rust or corrosion, and reduces the coefficient of friction during opening and closing the coupler. The pin also protects the integrity of the coupler body and the knuckle to reduce coupler maintenance and further reduces the weight of the railway car and facilitates the use of a self-locking feature.

REFERENCES:
patent: 1857035 (1932-05-01), Tomlinson
patent: 2857057 (1958-10-01), Metzge
patent: 3546735 (1967-03-01), Liautaud
patent: 4345848 (1982-08-01), Cheselka
patent: 4440586 (1890-11-01), Eastwick, Jr.
patent: 4640422 (1987-02-01), Elliott
patent: 4976363 (1990-12-01), Altherr
McConway & Torley publication, "The M&T Straight Pin Hole Coupler Knuckle", Jan. 9, 1989.
Association of American Railroads (AAR) Specification M-118-61, Jan. 9, 1989.

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