Optics: measuring and testing – Angle measuring or angular axial alignment
Reexamination Certificate
2009-11-30
2011-12-13
Stafira, Michael P (Department: 2886)
Optics: measuring and testing
Angle measuring or angular axial alignment
C356S139000
Reexamination Certificate
active
08077301
ABSTRACT:
A sensor may simultaneously sense the angular position of a first rotatable member relative to a frame of reference and the angular position of a second rotatable member relative to the first rotatable member. The sensor may include a first and a second disk, each of which have an annular pattern which alternates between two different levels of optical transparency. The first disk may be coupled to the first rotatable member; and the second disk may be coupled to the second rotatable member. The first and the second disks may each have an integral annular race configured to support ball bearings.
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BI Technologies Corporation
McDermott Will & Emery LLP
Stafira Michael P
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