Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-02-20
2007-02-20
Luu, Thanh X. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C092S00500L, C091S001000
Reexamination Certificate
active
10697585
ABSTRACT:
An apparatus, a system and a method are provided for monitoring position of a machine element within a mechanical system and/or cleaning a machine element. A light source and sensor may be positioned within a cylinder. The sensor may detect the intensity of light within the cylinder as a shaft element moves throughout the cylinder. The measurement may indicate the position of the shaft element within the cylinder. An aperture may be placed within the cylinder to enable light to enter the cylinder. In addition, a seal, a wire brush and/or a bronze brush may be placed near an end wall of a cylinder. The seal may surround the shaft element.
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Luu Thanh X.
Motion Controls, LLC
Patents&TMS, P.C.
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