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:
Aug. 19, 2008
Filed:
Dec. 15, 2005
Applicants:
Silvio Dalla Piazza, St-Imier, CH;
Bruno Studer, Riedholz, CH;
Inventors:
Silvio Dalla Piazza, St-Imier, CH;
Bruno Studer, Riedholz, CH;
Assignee:
ETA SA Manufacture Horlogere Suisse, Grenchen/Granges, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P 9/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A transducer for measuring an angular velocity formed by a single piezoelectric tuning fork () that rotates at the angular velocity. The tuning fork has a detection leg () which has a cross-shaped section including two top lateral faces () and two bottom lateral faces () separated by protruding parts () projecting with respect to the faces. The detection leg has detecting electrodes which are arranged such that the electrical field between electrodes is substantially rectilinear through the detection leg.