Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Cell enclosure structure – e.g. – housing – casing – container,...
Reexamination Certificate
2005-05-03
2005-05-03
Cantelmo, Gregg (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Cell enclosure structure, e.g., housing, casing, container,...
C429S056000, C429S162000, C429S176000
Reexamination Certificate
active
06887618
ABSTRACT:
An electrochemical cell generating hydrogen gas upon discharge, wherein the cell has an outer casing, a vent aperture passing through a wall of the casing, and a rupturable membrane covering the vent aperture. The outer casing preferably has a flat wall running along the cell's length and a vent aperture passing through the flat wall. The cell may typically be an alkaline cell in the shape of a cuboid. The rupturable membrane may be secured by a ring facing the inside surface of the flat wall of the casing in a position adjacent the vent aperture. The rupturable membrane is preferably of polysulfone. The membrane allows hydrogen gas to permeate therethrough to the environment and is rupturable if hydrogen gas within the cell interior builds up rapidly to a threshold pressure level. Optionally, a pointed puncture member extends into the vent aperture to assist membrane rupture.
REFERENCES:
patent: 3218197 (1965-11-01), Carmichael et al.
patent: 3219488 (1965-11-01), Southworth, Jr.
patent: 3314824 (1967-04-01), Spanur
patent: 3617386 (1971-11-01), Bosben et al.
patent: 4191806 (1980-03-01), Levy
patent: 4227701 (1980-10-01), Tsuchida et al.
patent: 4237203 (1980-12-01), Tsuchida et al.
patent: 5080984 (1992-01-01), Thibault et al.
patent: 5080985 (1992-01-01), Wiacek et al.
patent: 6127062 (2000-10-01), Sargeant et al.
patent: 6780539 (2004-08-01), Shelekhin et al.
Ashbolt Mark
Ferrin Robert S.
Roberts Michael F.
Shelekhin Alexander
Specht Steven J.
Cantelmo Gregg
Josephs Barry D.
Krivulka Thomas G.
Parsons Thomas H.
The Gillette Company
LandOfFree
Electrochemical cell with flat casing and vent does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrochemical cell with flat casing and vent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrochemical cell with flat casing and vent will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3410159