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:
Jan. 21, 1997
Filed:
Oct. 05, 1994
Yoshikazu Tsuru, Nishinomiya, JP;
Sinji Itamochi, Osaka, JP;
Junji Ohishi, Sennan, JP;
Tetsuro Shimamura, Kyoto, JP;
Hiroshi Tahara, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The invention is a crystal oscillator having a vibrating plate comprising a vibrating part surrounded by a rim part spaced from the vibrating part except for a narrow connecting part that connects the vibrating part to the rim part in a cantilever fashion. The thickness of the vibrating part and the connecting part are less than the thickness of the rim part. The vibrating part is sandwiched between a pair of casings. Each of the casings has a recess facing the vibrating part, which prevent the vibrating part from contacting the casings. Each surface facing a recess has an electrode positioned thereon and an electrode lead extending from the surface electrode to the connecting part. Each casing has a through-hole positioned to face an electrical lead. A cup-shaped metal lead is placed in each through-hole with the bottom of the cup contacting the electrical lead facing the through-hole. Current to the surface electrodes is supplied through the metal leads.