The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2005
Filed:
Feb. 27, 2003
Dana R. Yoerger, North Falmouth, MA (US);
David K. Nergaard, Littleton, MA (US);
Albert M. Bradley, North Falmouth, MA (US);
Dana R. Yoerger, North Falmouth, MA (US);
David K. Nergaard, Littleton, MA (US);
Albert M. Bradley, North Falmouth, MA (US);
Independence Technology, L.L.C., Warren, NJ (US);
Abstract
The relative position of two members is determined based upon a detected relative intensities of first and second colors of light. The intensity balance associated with relative occlusion of first and second color filter portions on one member by a mask on the other member. An exemplary use is in rotational position sensing within a limited rotation range. With a given compliance between the two members, the position sensing can be used as a proxy for torque sensing.