Electricity: circuit makers and breakers – Special application – Change of inclination or of rate of motion responsive
Patent
1991-08-14
1993-03-16
Scott, J. R.
Electricity: circuit makers and breakers
Special application
Change of inclination or of rate of motion responsive
200 6145M, 200 6153, 335205, H01H 3514
Patent
active
051947064
ABSTRACT:
A shock sensor has a housing defining an axially extending bore, a reed switch is centered within the bore by means of its axially extending leads and a transverse section of the housing which has an axially extending hole which centers one of the leads of the reed switch with the housing. The other lead of the reed switch is centered by a first retainer, which is fixed within the bore to align the reed switch within the housing with the axis of the housing. An activation magnet, is slidably mounted within the bore of the housing, and has a central hole passing over one of the axially extending leads. The magnet is biased by a spring away from the end activation region of the reed switch, which is near an end of the glass capsule which encloses the reed switch. The spring biases the activation magnet against a second retainer so that when the housing is not undergoing acceleration the activation magnet is biased to a position where the switch is not activated. The first and second retainers and perpendicular mounting leads are welded to the axial leads and are sealed from the atmosphere and joined to the bore of the housing by cast-in-place epoxy.
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patent: 3559124 (1971-01-01), Posey
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patent: 3853199 (1974-12-01), Hirashima et al.
patent: 4016535 (1977-04-01), Dinlocker
patent: 4117430 (1978-09-01), Sims, Jr.
patent: 4518835 (1985-05-01), Grossar
patent: 4705922 (1987-11-01), Seeger et al.
patent: 4820888 (1989-04-01), Shields
patent: 4877927 (1989-10-01), Reneau
patent: 4980526 (1990-12-01), Reneau
Hamlin, Inc.
Scott J. R.
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