Rotary coupler with a specially configured pinhole

Details Rotary coupler with a specially configured pinhole Rotary coupler with a specially configured pinhole

1980-09-25

1982-09-21

Peters, Jr., Joseph F.

Railway draft appliances

Cushioned

Drawbars

213 62R, B61G 9020

Patent

active

043502563

ABSTRACT:
A rotary F coupler is described as having an improved pinhole design, wherein the backwall of the pinhole has a generally cylindrical, rectangularly shaped pin bearing surface which projects into the pinhole about three-quarters of an inch, compared to the conventional projection or crown of one-quarter of an inch, and in such a way as to prevent unduly high stress concentrations in the coupler shank caused by contact of the shank and pivot pin during vertical angling of the coupler.

REFERENCES:
patent: 1684209 (1928-09-01), Whitridge et al.
patent: 3635358 (1972-01-01), Altherr
patent: 4192089 (1980-03-01), Schwappach

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