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:
Jan. 06, 1987
Filed:
Dec. 19, 1984
Applicant:
Inventors:
Stephen Ching, San Jose, CA (US);
Frank B Babbitt, Jr, Palo Alto, CA (US);
Adnan Merchant, San Jose, CA (US);
Assignee:
General Instrument Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01D / ;
U.S. Cl.
CPC ...
2502 / ; 250229 ;
Abstract
A multi-position rotary switch comprises an actuator drum divided into a plurality of different n-bit codes where each bit is represented by a reflective area or a non-reflective area on the drum. The drum is radiated by a suitable emitter and radiation reflected off of the drum by reflective bits is detected by a plurality of radiation detectors. The drum is rotatable to bring the different n-bit codes into view of the radiation detectors. Each different n-bit code detected by the radiation detectors is indicative of a particular switch position.