Sealed storage battery
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Sep 9, 1997
Issued Date -
N/A
app pub date -
May 16, 1996
filing date -
Jun 3, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A sealed storage battery has a sealing assembly including a hollow rivet mounted to a cover plate via a gasket and a lead piece connecting a positive collector to the hollow rivet. Mounting the hollow rivet to the cover plate is achieved by pressurizing a distal end portion of a hollow shaft of the hollow rivet with a punch having a conical tip end portion so as to caulk the distal end portion of the hollow rivet by enlarging the distal end portion diametrically outward. Tightness between the opposing surfaces of the members among the cover plate, hollow rivet, gasket and lead piece can be enhanced, providing excellent liquid leakage resistance in the battery. A valve body of a safety valve is housed in a positive terminal welded to the head of the hollow rivet.
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