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:
Sep. 07, 1982
Filed:
Jun. 10, 1980
Applicant:
Inventor:
Norberto Perucchi, St. Blaise, CH;
Assignee:
Eta A.G. Ebauches-Fabrik, Grenchen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G04C / ;
U.S. Cl.
CPC ...
368187 ; 368 76 ; 368157 ;
Abstract
The watch comprises a detecting device including a resilient blade, the free end of which cooperates with a disk. When a slot in the edge of the disk is oriented in the direction of the blade, the latter vibrates owing to its own resiliency. The two edges of the slot are preferably bent in opposite directions in order to increase the bending stress on the blade just before its abrupt release into the slot. A piezoelectric strip fixed to the blade registers voltage fluctuations, the polarity of which corresponds to the direction in which the blade moves.