Load regulating latch

Details Load regulating latch Load regulating latch

1975-12-18

1977-08-30

Moore, Richard E.

Closure fasteners

Bolts

Hooked end

E05C 504

Patent

active

040450635

ABSTRACT:
In one exemplary embodiment, a load regulating mechanical latch is provided that has a pivotally mounted latch element having a hook-shaped end with a strike roller-engaging laterally open hook for engaging a stationary strike roller. The latch element or hook is pivotally mounted in a clevis end of an elongated latch stem that is adapted for axial movement through an opening in a support plate or bracket mounted to a structural member. A coil spring is disposed over and around the extending latch stem and the lower end of the coil spring engages the support bracket. A thrust washer is removably attached to the other end of the latch stem and engages the other end of the coil spring and compresses the coil spring thereby preloading the spring and the latch element carried by the latch stem. The hook-shaped latch element has a limited degree of axial travel for loading caused by structural distortion which may change the relative positions of the latch element hook and the strike roller. Means are also provided to permit limited tilt of the latch element due to loading of the hook.

REFERENCES:
patent: 809209 (1906-01-01), O'Connor
patent: 1483953 (1924-02-01), Rainey
patent: 2988392 (1961-06-01), Chi Sheng Kuo
patent: 3797882 (1974-03-01), Brimhall
patent: 3825295 (1974-07-01), Saunders et al.

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