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:
Oct. 29, 1996
Filed:
Mar. 15, 1993
Mark A Polinsky, Torrington, CT (US);
John M Grillo, Plymouth, CT (US);
Scott M Duncan, Avon, CT (US);
The Torrington Company, Torrington, CT (US);
Abstract
A fluid seal is joined to a seal carrier, and a magneto-responsive sensor is coupled to a carrier to sense the polarities of a magnet borne on a rotatable shaft. The seal carrier, with the incorporated sensor, is arranged about the shaft, and leads from the sensor transmit an output signal voltage which corresponds to, or is proportional to the speed of rotation of the shaft. Depending upon the type of sensor employed, the signal voltage will be of repeatedly changing amplitude (i.e., pulsed or sine wave), or of given amplitude, in which the signal goes from zero to the given amplitude, to zero cyclically, or the sine wave amplitude/voltage increases with increasing speed, or pulse widths which diminish with speed acceleration.