Multi-stage door snap

Details Multi-stage door snap Multi-stage door snap

1991-02-08

1991-10-29

Moore, Richard E.

Closure fasteners

Bolts

Spring arm

292DIG38, 364708, E05C 1100

Patent

active

050609904

ABSTRACT:
A door latch mechanism, such as for a calculator battery enclosure, has a pair of ridge and groove mating points. The mechanism has a partially engaged position in which only a single ridge engages a groove and a fully engaged position in which both ridges engage grooves. A shock to the calculator, such as by dropping it, will generally not release the mechanism to a disengaged position. Consequently, the batteries will be retained and memory functions thereby preserved.

REFERENCES:
patent: 4216984 (1980-08-01), Hofmann et al.
patent: 4669053 (1987-05-01), Krenz
patent: 4742478 (1988-05-01), Nigro, Jr. et al.

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