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:
Feb. 12, 1991
Filed:
Jun. 19, 1989
Applicant:
Inventor:
Charles W Donaldson, Cincinnati, OH (US);
Assignee:
General Electric Company, Cincinnati, OH (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; G01B / ;
U.S. Cl.
CPC ...
335551 ; 335553 ; 356384 ; 356386 ;
Abstract
A diameter gauge is disclosed for measuring the outside diameter of a part having a circular cross-section. The gauge comprises two arms converging to form a channel, a light source and a light detecting device. The part to be measured is placed within the channel, partially blocking or reflecting the transmission of light from the light source. The diameter of the part is determined from the location of the part shadow or reflected light.