Electricity: circuit makers and breakers – Special application – Change of inclination or of rate of motion responsive
Patent
1979-10-25
1981-11-03
Scott, James R.
Electricity: circuit makers and breakers
Special application
Change of inclination or of rate of motion responsive
73503, 73517R, 200 615, 200 6153, H01H 3500
Patent
active
042987776
ABSTRACT:
A crash force sensor is disclosed which may be used to activate emergency location systems such as a transmitter or an inflatable aerial tethered balloon. The crash force sensor comprises a casing and a moveable seismic mass held within the casing. A plurality of friction pads and friction plates surround the mass in order to increase friction between the mass and the casing while allowing the mass the slide through said casing when a force of predetermined magnitude and direction is experienced. A pressure responsive means such as a spring extends between the mass and one end of the casing, and signal means is coupled to the mass to provide an indication of the pattern of force experienced by the sensor. The sensor may also include air damping means to impede the reaction of the mass to spring force after crash acceleration or deceleration has ceased.
REFERENCES:
patent: 2283180 (1942-05-01), Buchanan
patent: 2641457 (1953-06-01), Carleton
patent: 2793260 (1957-05-01), Ciosek
patent: 2851554 (1958-09-01), Feng et al.
patent: 2974529 (1961-03-01), Brueggeman et al.
patent: 3096656 (1963-07-01), Jackson
patent: 3222554 (1965-12-01), Blomquist
patent: 4032733 (1977-06-01), Meisenheimer, Jr.
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