Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Headed fastener element with nut – washer – securing means or cap – Draw bar or draft key fastener
Patent
1988-02-16
1989-06-20
Smith, Gary L.
Expanded, threaded, driven, headed, tool-deformed, or locked-thr
Headed fastener element with nut, washer, securing means or cap
Draw bar or draft key fastener
411340, F16B 2102
Patent
active
048405280
ABSTRACT:
A hitch pin assembly is provided for locking equipment, such as a crossbar, to a tractor. The hitch pin comprises a locking pin having a head and a pivoted pull ring serving as the locking mechanism. A spring loaded rod including a keeper notch is retained coaxially within the locking pin. An access slot in the pin is provided in alignment with the notch to allow receipt of the ring as it swings toward the pin for locking. The spring loaded rod is retracted into the locking pin, allowing the keeper notch to capture the pull ring. The rod is then released and the pull ring is securely locked in a positive fashion in position. Pressing the rod back into the pin releases the ring to pivot outwardly from the keeper notch so that the locking pin can be removed.
REFERENCES:
patent: 2180558 (1939-11-01), Stastny
patent: 2204116 (1940-06-01), Blocher
patent: 2856806 (1958-10-01), Gibbons, Jr.
patent: 3132556 (1964-05-01), Doering et al.
patent: 3175453 (1965-03-01), Williams
patent: 3926089 (1975-12-01), Ruebig et al.
patent: 4036097 (1977-07-01), Greenwood
patent: 4236439 (1980-12-01), Imai
patent: 4443144 (1984-04-01), Defrancq
patent: 4773805 (1988-09-01), Krahling
Brueske Curtis B.
Smith Gary L.
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