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. 22, 1987
Filed:
Oct. 23, 1985
Takeshi Hojo, Kuroiso, JP;
Shin-Ichi Kawada, Kuroiso, JP;
Michio Fukano, Ohtahara, JP;
Kanshi Yamamoto, Kuroiso, JP;
Youji Okamura, Nasumachi, JP;
Kazuteru Sato, Kuroiso, JP;
Masahiko Saito, Yokosuka, JP;
Fuyuki Hane, Nasumachi, JP;
Kabushikikaisha Tokyo Keiki, Tokyo, JP;
Abstract
A vibration-type gyro apparatus is disclosed, which includes a vibration mass portion, a piezo-electric element for detecting the displacement of the apparatus and a preamplifier having an input resistance R and supplied with the output from the piezo-electric element, wherein the input resistance R is selected to have a value substantially expressed as R.apprxeq.1/C.omega. (where C is an electrostatic capacity of the piezo-electric element and .omega. is a vibration angular velocity of the mass portion) so that the gyro apparatus will be substantially free of variations due to temperature changes.