B - Operations – Transporting – 61 – G
Patent
B - Operations, Transporting
61
G
213/97
B61G 9/02 (2006.01) B61G 9/20 (2006.01) B61G 9/24 (2006.01)
Patent
CA 1171031
A ROTARY COUPLER WITH A SPECIALLY CONFIGURED PINHOLE Abstract A rotary F coupler is described as having an improved pin- hole 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 contract of the shank and pivot pin during vertical angling of the coupler.
383774
Hanula Richard M.
Kulieke Fred C. Jr.
Macrae & Co.
Midland-Ross Corporation
LandOfFree
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