Water-impact release mechanism

Details Water-impact release mechanism Water-impact release mechanism

1998-04-20

2000-02-15

Poon, Peter M.

Aeronautics and astronautics

Safety lowering devices

Parachutes

244138R, 244139, B64D 102

Patent

active

060243260

ABSTRACT:
A water-impact release mechanism has a hub with a first sleeve coupled thto. The first sleeve has a plurality of circumferentially distributed holes therein. A spring assembly, coupled to the hub, extends into the first sleeve. In a relaxed state, the spring assembly obstructs the holes while, in a compressed state, the spring assembly does not obstruct the holes. A second sleeve, concentric with the first sleeve, is elastically coupled to the hub and biased away therefrom. The second sleeve has an inwardly-facing annular groove. A ball resides in each of the holes and is large enough to extend beyond the confines of its hole. When the bias of the second sleeve is overcome, the annular groove aligns with the holes in the first sleeve thereby allowing the radial outward movement of the balls. A plate, coupled to the second sleeve, extends radially outward therefrom to define a water-impact surface. Water-impact forces impinging on the plate cause the bias of the second sleeve to be overcome such that the second sleeve abuts the hub.

REFERENCES:
patent: 2778308 (1957-01-01), Fogal et al.
patent: 2880687 (1959-04-01), Kilvert
patent: 3066632 (1962-12-01), Bemis
patent: 4132147 (1979-01-01), Contaldo
patent: 4592524 (1986-06-01), Nohern et al.

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