Apparatus for sensing the position of a structural member

Electricity: motive power systems – Positional servo systems – With protective or reliability increasing features

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318661, 408 13, 408 16, 83368, 72 12, G05B 2302, B23B 3906, B23G 100

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active

047135921

ABSTRACT:
An apparatus for sensing the location of a structural member on which a working operation is to be performed. The apparatus includes a probe that is connected to a rack and is mounted for movement between an inoperative position and an operative position, where the probe will be in engagement with the structural member. The rack is carried by a piston which is slideable within a cylinder and by introducing fluid pressure into one end of the cylinder, the rack will be extended to thereby move the probe from the inoperative to the operative position. Engaged with the rack is a pinion and linear movement of the rack will rotate the pinion and rotation of the pinion acts through a resolver to generate a signal indicating the precise position of the structural member.

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