发明名称 Positional sensing
摘要 An angular positional sensor comprises a housing in which is mounted a rotary sensing device including a shaft which mounts a pendulum having relatively low inertia and a balanced member having relatively high inertia and rotatably mounted within the housing adjacent the pendulum member. At least the part of the housing containing the pendulum and the balanced member also contains a liquid to provide a viscous coupling between the pendulum and the balanced member. The arrangement is such, that in use, angular movement of the housing about the longitudinal axis of the shaft causes movement of the rotary sensing device relative to the shaft which is retained stationary by the pendulum which in turn is damped by the balanced member, to produce a signal representative of such angular movement from the rotary sensing device.
申请公布号 US4027399(A) 申请公布日期 1977.06.07
申请号 US19760646985 申请日期 1976.01.07
申请人 BP TRADING LIMITED 发明人 ARMSTRONG, ROBERT JAMES;COOK, BOYD STANLEY
分类号 G01B7/00;E21B7/04;E21B47/02;G01B7/30;G01C9/12;(IPC1-7):G01C9/06 主分类号 G01B7/00
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