Wells – Packers or plugs – With expanding anchor
Patent
1991-12-26
1993-10-19
Novosad, Stephen J.
Wells
Packers or plugs
With expanding anchor
166142, 166338, 166385, 403316, 403322, B25J 1700, E21B 3312, E21B 3416
Patent
active
052537064
ABSTRACT:
A release mechanism is described for releasing a lock member (10) which secures a first body member (5) to a second body member (1). The release mechanism comprises a reciprocal member (6) which is mounted on the first body member (5) for movement relative to the first body member (5). A catch mechanism (8, 11, 12) is also provided which is movable between the first position where the lock member (10) is fixed and the second position where the lock member (10) is released. The reciprocal member (6) moves in a first direction when a force is applied to the reciprocal member (6) and moves in a second direction when the force is removed. Repeated reciprocal movement of the reciprocal member (6) in the first and second directions effects movement of the catch mechanism (8, 11, 12) from the first position to the second position to release the lock member (10) to permit relative movement between the first and second body members (5, 1).
REFERENCES:
patent: 3670815 (1972-06-01), Brown
patent: 3863715 (1975-02-01), Yonker
patent: 4405017 (1983-09-01), Allen et al.
patent: 4452418 (1984-02-01), Moyland
patent: 4474242 (1984-10-01), Upchurch
patent: 4479539 (1984-10-01), Tamplen et al.
patent: 4657077 (1987-04-01), Smith, Jr. et al.
patent: 4957387 (1990-09-01), Nasu
Novosad Stephen J.
Well-Equip Limited
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