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:
Feb. 07, 1989
Filed:
Feb. 29, 1988
Kurt F Garoutte, Furlong, PA (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A pressure activated reserve battery, capable of being activated by increasing external or environmental seawater pressure as the device is lowered or sinks to depth, without benefit of an external pressure hull. Pressure compensation, balancing of external seawater pressure and internal electrolyte pressures continually after activation of the device precludes the use of a pressure hull. A pressure activated battery, made up of reserve cells, for selectively providing stored reserve electrolyte into cell electrode environments upon application of a specified activation pressure. Each cylindrical reserve cell housing includes an electrolyte reservoir and a cell electrode assembly. A first barrier having a pressure rupturable disc is arranged to provide a fluid-tight separation between the electrode assembly and the electrolyte reservoir. A collapsing cup integrally attached to the wall of the electrolyte reservoir is located within the reservoir with the open end adjacent to and facing the first pressure rupturable barrier. A second pressure rupturable barrier is located on the external end of the cylindrical electrolyte reservoir. The reserve cell assemblies are located within an external housing filled with an electrically non-conductive fluid having a first end cover containing a third pressure rupturable disc. A flexible bladder is provided within the external housing to isolate the fill fluid from the end cover and the third rupturable disc. The application of a predetermined external pressure on the housing results in an initial collapse of the third rupturable disc and a subsequent application of the external pressure to the bladder to pressurize the fill fluid. The pressurization of the fill fluid to a predetermined level results in a rupture of the second rupturable disc and the pressurization of the electrolyte by a collapse of the integral cup. Finally, the pressurized electrolyte is effective to breach the first rupturable disc to enable the electrolyte to be forced into the electrode assembly to wet the electrodes to activate the battery.