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. 21, 1978
Filed:
Oct. 31, 1975
Applicant:
Inventor:
Luciano Franzolini, Milan, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01P / ;
U.S. Cl.
CPC ...
73507 ;
Abstract
A device for detecting the difference in the rotary speeds of two rotating shafts comprises a bearing for coaxially mounting the shafts for rotation in opposite directions, a low power precision stepping motor imparting a programmed speed of rotation to one of the shafts, a gearing interconnecting the shafts and displaceable in response to a change in the relative angular position of the two rotation shafts, and a sensor detecting displacement of the gearing in response to the change.