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:
Dec. 07, 1976
Filed:
Feb. 20, 1975
Hirokazu Horii, Ohmiya, JA;
Nissan Motor Co., Ltd., BOTH OF, JA;
Kanto Seiki Company Limited, BOTH OF, JA;
Abstract
An eddy-current meter comprises a permanent magnet fixed for rotation with a shaft whose rotation speed is to be measured. A metal cup is disposed close to the permanent magnet and attached to a spindle carrying a pointer. The spindle is rotatable against the bias of a spiral spring. The spindle is rotatably mounted on a support bearing of the shaft. A helical compression spring is mounted insuring that the support bearing of the shaft and the journal of the spindle are axially and yieldably biased toward each other with a force the magnitude of which is adjustable. The spindle is maintained in coaxial relationship with the shaft by two axially spaced radial bearings.