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:
Apr. 29, 1997
Filed:
Apr. 25, 1995
Applicant:
Inventor:
Jerry Rutherford, Anaheim, CA (US);
Assignee:
Rohrback Cosasco Systems, Inc., Santa Fe Springs, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
73618 ; 73635 ;
Abstract
A acoustical imaging scanning head includes a roller driven optical encoder. The encoder and its shaft are isolated in a non-magnetic housing. The encoder shaft and a roller driven drive shaft are provided with permanent magnets on facing steel discs on opposite sides of a relatively thin wall of a non-magnetic housing. The encoder is sealed in a chamber in such housing and is totally isolated from the surrounding environment, including the drive shaft. The position and arrangement of the magnets maintains the ability to rotate the encoder shaft to produce electrical pulses proportional to the encoder shaft rotation.