Pipe joints or couplings – With means blocking release of holding means – Auxiliary latch
Patent
1974-11-29
1976-07-27
Kundrat, Andrew V.
Pipe joints or couplings
With means blocking release of holding means
Auxiliary latch
176 78, 403320, F16L 1500
Patent
active
039715752
ABSTRACT:
A releasable locking device for urging limited relative rotation about a longitudinal axis between a first and second object threadably coupled together so as to maintain a tight connection of the coupled objects. The locking device comprises a brake plate which is supported with respect to the second object so as not to move rotationally relative thereto, a locking plate supported with respect to the first object so as not to move rotationally relative thereto, and a biasing means. The brake plate and locking plate are each positioned laterally adjacent to the first object and each have longitudinally extending complimentary ratchet teeth having inclined surfaces on their mutually facing, surfaces, the inclined surfaces of ratchet teeth of the brake plate being adapted to mate with the inclined surfaces of ratchet teeth of the locking plate. The biasing means normally biases the locking plate and brake plate toward one another to mate the inclined surfaces thereof so that the biasing force is transmitted through the inclined surfaces to urge relative rotation of the locking plate and brake plate. In this way, a force is continuously applied to maintain a tight connection of the two coupled objects. Also, the biasing means is releasable to permit one of the objects to be rotated freely relative to the other.
REFERENCES:
patent: 903435 (1908-11-01), Barrott
patent: 1859045 (1932-05-01), Monckmeier
patent: 2728895 (1955-12-01), Quackenbush et al.
patent: 3368602 (1968-02-01), Boyd
patent: 3770583 (1973-11-01), Klumb
patent: 3864211 (1975-02-01), King
Lesham Adam
Schukei Glen Elwin
Borst Stephen L.
Combustion Engineering Inc.
Kundrat Andrew V.
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