Closure fasteners – Bolts – Sliding
Patent
1995-07-25
1996-11-26
Lindsey, Rodney M.
Closure fasteners
Bolts
Sliding
29216918, 292358, E05C 112
Patent
active
055777805
ABSTRACT:
A latch assembly is operated by either pushing or pulling against the end of, displacing a given amount of longitudinal travel, a spindle which has a helically formed portion of a given length engaged by congruently formed cam aperture surfaces. The cam is rotatably positioned with respect to and in engagement with the spindle. A rollback is contacted by one of two lobe surfaces of the cam, one corresponding to a pull of the spindle, the other corresponding to a push upon the spindle from the opposed end, the cam rotating in alternate directions. The rollback may be of a single piece with the latch member which is slidably held by the frame of the latch assembly. Biasing of the latch into an extended position and limiting the travel allowed the spindle with positive stops along with biasing of the spindle is suggested such that the normal, extended latch position has one spindle end which may only be pushed against the biasing through the given amount of travel, thus effecting unfastening of the closure and facilitating opening of the closure as well with a single motion; the opposed spindle end may only be pulled, against the same bias, through the travel and similarly effect unfastening and opening of the closure with a single motion. Locking of the assembly is suggested, preferably by disengagement of the rollback from the cam as opposed to interposition of a member inhibiting spindle travel.
REFERENCES:
patent: 455334 (1891-07-01), Iske et al.
patent: 2131458 (1938-09-01), Turner
patent: 2939737 (1960-06-01), Nygren
patent: 3020073 (1962-02-01), Williams
patent: 5157953 (1992-10-01), Hung
Gibson Peter
Lindsey Rodney M.
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