Joints and connections – Articulated members – Pivoted
Patent
1977-04-26
1978-10-24
Shedd, Wayne L.
Joints and connections
Articulated members
Pivoted
403319, 403353, 280510, 280513, F16C 1100
Patent
active
041218930
ABSTRACT:
A ball and socket coupling in which the ball is positively retained within the socket by means of a cap, removably secured to the socket for closing the open end of the latter and having a hole through which the ball stem extends. The cap hole allows pivotal movement of the ball relative to the socket. The socket and the cap have inter-engaging interrupted threads for securing and releasing the cap by a simple one-quarter turn of the same. A lever is pivoted to the cap and engages between ears on the socket in the secured position of the cap to provide a safety lock. The resulting coupling is much stronger than conventional ball and socket couplings, because the cap forms an abutment face all around the ball.
REFERENCES:
patent: 2438749 (1948-03-01), Harrer
patent: 3776649 (1973-12-01), Kemezys
patent: 3902575 (1975-09-01), Nelson et al.
patent: 3909033 (1975-09-01), Russell
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