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:
Jun. 16, 1987
Filed:
Oct. 26, 1984
Applicant:
Inventors:
Christian Gohin, Magny, FR;
Henri Leblond, Versailles, FR;
Assignee:
Badin Crouzet, Chateaufort, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01P / ;
U.S. Cl.
CPC ...
73505 ;
Abstract
The invention relates to a gyrometer, without material rotor, of the type using the Coriolis forces on the particles of a fluid contained in a resonant cavity. It comprises, in addition to the conventional excitation and detection unit, a unit for effecting servo-control in phase of the longitudinal acoustic oscillation in the cavity and employs a weak coupling mode between exciter and cavity. The gyrometer according to the invention overcomes the variations in length of the cavity and the fluctuations in the speed of propagation of the oscillations in the fluid as a function of the temperature.