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:
Apr. 02, 1991
Filed:
Aug. 28, 1989
Kiyoshi Sato, Ibaraki, JP;
Hirokazu Yoshikawa, Ibaraki, JP;
Shigeru Ikenari, Suita, JP;
Kenichi Yokoyama, Takatsuki, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Abstract
A flat disc type sealed battery comprises a battery vessel having a bottom wall with an electrolyte charging opening formed in the central portion thereof, and a battery lid member for covering the upper opening of the battery vessel. Power generating components are enclosed by sealing the battery vessel battery lid member, and a first sealing member is provided for sealing the electrolyte charging opening after the electrolyte is charged into the battery vessel, and a second sealing member is provided for covering the aperture in the side of the lower edge portion of the electrolyte charging opening. The outer peripheral portion of the second sealing member is welded to the bottom wall of the battery vessel to perfectly seal the battery vessel.