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. 17, 1984
Filed:
Mar. 29, 1982
Applicant:
Inventor:
James W Cutter, Hollister, CA (US);
Assignee:
Litton Industrial Products, Inc., Beverly Hills, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G01B / ;
U.S. Cl.
CPC ...
378151 ; 3312 / ;
Abstract
An improvement in Source-to-Image Distance monitors for automatic adjusting X-ray radiography equipment having a cable, rewind spring, a self-traversing constant diameter takeup drum moving past a fixed aperture, an electrical potentiometer to provide a continuously varying electrical output signal and a snap action switch mechanism to indicate relative movement of the X-ray apparatus being monitored.