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:
Jun. 08, 1993
Filed:
Apr. 21, 1992
Glen E Miller, Redondo, WA (US);
The Boeing Company, Seattle, WA (US);
Abstract
An optical position sensor comprising an encoder plate (52) that includes a variable density code pattern (54) is disclosed. Disposed in contact with the encoder plate is a bearing plate (58) having a read head (60) rigidly mounted thereto. The encoder plate (52) is coupled by a flexible aligner (62) and a shaft (64) to an object whose position is to be sensed such that the bearing plate (58) remains in contact with the encoder plate (52) as the object moves. Thus, no gap occurs between the read head and the encoder plate. A series of channels (70) disposed in the bearing plate contain a lubricant having approximately the same index of refraction as the encoder plate (52) and bearing plate (58). The lubricant reduces abrasion between the encoder plate and bearing plate as well as reduces reflective losses.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile