Buckles – buttons – clasps – etc. – Bale and package ties – hose clamps – With tighteners
Patent
1974-09-20
1976-04-27
Frazier, Roy D.
Buckles, buttons, clasps, etc.
Bale and package ties, hose clamps
With tighteners
244151B, 294 83A, B64D 1738
Patent
active
039523810
ABSTRACT:
Buckle for retarded automatic unlocking of safety belts and harnesses of parachuting equipment or of vehicles, which comprises a frame slideably mounted in a casing and a shaft in the frame for supporting a swinging bolt adapted to imprison the shackle of a strap, or release either instantaneously under the direct action of a manual control means or with a delay under the action of an automatic control means connected to the bolt and actuated by springs compressed by the shackle when the shackle is introduced inside the casing. The automatic control means is itself locked by means adapted to be slowly withdrawn, by means of a brake, under the action of a traction force exerted by the shackle on the bolt providing the sliding movement of the frame against the action of a return spring bringing back the frame to its initial position as soon as the traction force of the shackle on the strap substantially diminishes or ceases.
REFERENCES:
patent: 2919154 (1959-12-01), Schart
patent: 3233296 (1966-02-01), Whittingham
patent: 3235930 (1966-02-01), Chapin et al.
patent: 3249328 (1966-05-01), Knowles
patent: 3306653 (1967-02-01), Gaylord
patent: 3418007 (1968-12-01), Jantzen
patent: 3451720 (1969-06-01), Makinen
patent: 3466081 (1969-09-01), Femia
patent: 3475799 (1969-11-01), Marchfelder
patent: 3542426 (1970-11-01), Radke
patent: 3790994 (1974-02-01), Jakob
patent: 3855674 (1974-12-01), Thiel
Bonck Rodney H.
Etudes et Fabrications Aeronautiques
Frazier Roy D.
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