Deceleration sensor having safety catch means

Details Deceleration sensor having safety catch means Deceleration sensor having safety catch means

1988-09-28

1990-09-11

Marmor, Charles A.

Land vehicles

Wheeled

Attachment

42 7008, 280737, B62R 2236

Patent

active

049556380

ABSTRACT:
A deceleration sensor for detecting a threshold level of deceleration indicative of vehicle crash, comprising a sensor mass, a spring-loaded firing pin received in a guide bore, a trigger lever for engaging the firing pin in a dormant state until the trigger lever is disengaged from the sensor mass as a result of the occurrence of a deceleration in excess of the threshold level and the resulting inertia motion of the sensor mass, and a safety catch which may include a rotary shaft extending perpendicular to the plane of the inertia motion of the sensor mass and a part of a front end portion of the guide bore, the rotary shaft being provided with a first notch and a second notch which, respectively, permits and prohibits the propulsion of the firing pin through the guide bore by aligning with the guide bore. The reliability and safety of this deceleration sensor are improved by preventing the spooling out of the seat belt when the safety catch is on, prohibiting the release of the safety catch when the firing pin is disengaged from the trigger lever, and preventing the motion of the sensor mass as well as the firing pin when the safety catch is on.

REFERENCES:
patent: 2626474 (1953-01-01), Lochhead
patent: 3601081 (1971-08-01), Smith
patent: 3749282 (1973-07-01), Day et al.
patent: 4573322 (1986-03-01), Fohl
patent: 4573706 (1986-03-01), Breed
patent: 4580810 (1986-04-01), Thuen
patent: 4647071 (1987-03-01), Tabata

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