Joints and connections – Articulated members – Lockable at fixed position
Patent
1985-01-24
1986-04-15
Kundrat, Andrew V.
Joints and connections
Articulated members
Lockable at fixed position
403146, F16C 1100, F16D 112
Patent
active
045824452
ABSTRACT:
A pair of joint halves each include substantially cylindrical joint portions and end portions. Aligned openings are formed through the joint portions to receive therethrough a connecting pin which connects the joint halves together into a articulable joint. The connecting pin includes teeth on its outer surface sized to mate with teeth formed in the aligned openings of the joint halves. The connecting pin has a locked condition wherein its teeth mate with the teeth of both the joint halves and thus prevent relative rotation thereof, and an unlocked condition wherein its teeth are not in mating engagement with the teeth of one of the joint halves thus permitting relative rotation of one joint half with respect to the other. In one embodiment a spring urges the connecting pin into its locked condition and an operating button, disposed at one end of the connecting pin, facilitates movement of the pin so that its teeth move out of mating engagement with the teeth on one of the joint halves. In another embodiment, a spring urges the connecting pin into a position wherein its teeth are out of mating engagement with the teeth on one joint half; while an operating button connected to an end of the connecting pin facilitates movement of the connecting pin so that its teeth mate with the teeth on both joint halves and latch the connecting pin in place.
REFERENCES:
patent: 1410325 (1922-03-01), Kupferman
patent: 3322886 (1967-05-01), Warshawsky
Feldman Stephen E.
Kundrat Andrew V.
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