Handling: hand and hoist-line implements – Underwater implement
Patent
1986-08-28
1987-10-27
Marbert, James B.
Handling: hand and hoist-line implements
Underwater implement
43 96, 114305, A01M 2324, B66C 110
Patent
active
047025077
ABSTRACT:
A locking device is described for use in selectively locking a plurality of pivotable members at selected operative positions about a central axis. The device includes means for mounting the members for pivotal motion about axes that may be substantially parallel and spaced outwardly from a central axis of a support. The device also mounts the members for axial motion along the axes between locking and unlocking positions. An axially displaceable spool is spring biased on the support to normally urge the members axially toward the locking position. In the locking positions, locking surfaces on the members mate with complimentary surfaces on the support to prevent pivotal motion of the members about the individual member axes. The spool is selectively movable on the support to lock itself and the members in this axial orientation. The spool is also selectively retractable to enable axial separation of the locking surfaces. The unlocked members are individually pivotable to folded, inoperative positions.
REFERENCES:
patent: 1031903 (1912-07-01), Anderson
patent: 2602689 (1952-07-01), Matz
patent: 2887980 (1959-05-01), Madden
patent: 3092412 (1963-06-01), Drake
patent: 4130961 (1978-12-01), Snow
patent: 4145835 (1979-03-01), Snow
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