Measuring and testing – Vibration – Sensing apparatus
Patent
1995-11-17
1997-03-11
Williams, Hezron E.
Measuring and testing
Vibration
Sensing apparatus
340690, 367178, 200 6145R, 200 6147, 200 615, G01P 15135
Patent
active
056103387
ABSTRACT:
A roll or tilt responsive switch includes a housing formed from an electrically conductive material and having an inclined face formed on the bottom to gradually rise concentrically outwardly substantially from the center of the bottom, and a header fixed to the housing to close its open end and having a through-aperture in which a terminal pin is fixed in an insulated relation. A contact is fixed to an end of the terminal pin located inside the housing and has a plurality of feather portions each having a predetermined elasticity and disposed concentrically with the terminal pin. An inertia ball is enclosed in the housing to be located substantially at the center in the housing in a normal position of the switch in a stationary state. The inertia ball rolls when subjected to oscillations, so that the inertia ball slides on the feather portions of the contact except for distal ends of the feather portions such that the inertia ball electrically conducts between the contact and the housing and such that the feather portions are elastically deformed, thereby receiving a force pushing the inertia ball against the bottom of the housing.
REFERENCES:
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patent: 3916127 (1975-10-01), Roesch et al.
patent: 4001185 (1977-01-01), Mitsui et al.
patent: 4185651 (1980-01-01), Paulson
patent: 4493066 (1985-01-01), Ubukata et al.
patent: 5237135 (1993-08-01), Wolski
patent: 5396223 (1995-03-01), Iwabuchi et al.
patent: 5408457 (1995-04-01), Fujino et al.
Kato Harunori
Kimura Katsuhiro
Koseki Hideki
Mizutani Yasukazu
Shibata Shigekazu
Finley Rose M.
Ubukata Industries
Williams Hezron E.
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