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:
Oct. 30, 1990
Filed:
Mar. 10, 1989
Kyong Park, Thousand Oaks, CA (US);
Marcos A Nassar, Los Angeles, CA (US);
Cliff C Sun, Simi Valley, CA (US);
Kavlico Corporation, Moorpark, CA (US);
Abstract
An optical fiber position sensor utilizes a passive gray code encoded sensor head gray code for improved reliability. Optical energy is propagated to the sensor head over a plurality of optical fibers. At the sensor head, the optical energy is either reflected back along the same fiber or absorbed by the sensor head. The presence or absence of reflected optical energy on each fiber determine each bit state for a digital word. The sensor head is attached to a device to be monitored. Movement of the device causes translatory displacement of the sensor head relative to the fibers, thereby changing at least one bit state.