Position sensor

Details Position sensor Position sensor

2007-04-03

2007-04-03

Lazo, Thomas E. (Department: 3745)

Expansible chamber devices

With inspection window in expansible chamber wall portion

With lock

C033S763000

Reexamination Certificate

active

10757858

ABSTRACT:
A position sensor includes a stationary frame supporting a rotatable spool onto which a cable is wound in a plurality of individual windings. A distal end of the cable extends through a lead guide for attachment to an object whose position is desired to be sensed. As the object moves, the cable is would or unwound about the spool and the spool rotates in direct correlation to the movement of the object. The spool is retained in the frame through a threaded engagement between a threaded extension extending from the spool and a threaded opening in the frame. Thus, as the spool rotates, the spool travels along a linear path and a sensor determines the location of the threaded extension to determine the location of the object. A recoil spring is used which may be located within the spool itself.

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