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:
Nov. 01, 2011
Filed:
Jan. 31, 2008
Christo Brand, Langley, CA;
Christo Brand, Langley, CA;
EaglePicher Energy Products Corporation, Surry, CA;
Abstract
The present invention relates to an improved electrochemical device, such as a primary cell battery, that is capable of being manufactured on the miniature-level (e.g., a size amenable to being used in an injectable medical apparatus). An exemplary electrochemical device comprises a header comprising a pin extending into an electrode space defined by the header and a device case. The pin also extends into a first electrode and is configured to be the current collector of the device. An electrode pressure plate is disposed adjacent a second electrode, and a pressure maintaining spring interfaces with the pressure plate and a device base. The pressure maintaining spring is configured to expand as the electrochemical device discharges, thereby maintaining a contact pressure within the device.