Henry Heinz

US Patent:

40202410, Apr 26, 1977

Filed:

Mar 29, 1976

Appl. No.:

5/671674

Inventors:

Henry Heinz - Berea OH

Assignee:

Union Carbide Corporation - New York NY

International Classification:

H01M 212

US Classification:

429 54

Abstract:

A galvanic cell, and a method for making it, having a resealable vent closure consisting of a resilient elastomeric sponge gasket disposed and compressed between the cover of the cell and the upper wall of the cell's container and designed such that gas buildup within the cell in the range of about 5 to 75 psi will vent along the cover-gasket interface and/or container-gasket interface.

US Patent:

40525333, Oct 4, 1977

Filed:

Mar 29, 1976

Appl. No.:

5/671673

Inventors:

Henry Heinz - Berea OH

Assignee:

Union Carbide Corporation - New York NY

International Classification:

H01M 212

US Classification:

429 54

Abstract:

A galvanic dry cell having a resealable subseal comprising a cup-shaped flapper vent valve having an opening at its center for receiving and contacting the cell's current collector rod and a peripheral edge segment contacting and conforming to the inner wall of the cell's container and adapted for deflecting upwardly thereby providing a resealable vent path at the valve-container interface.

US Patent:

41122003, Sep 5, 1978

Filed:

Jun 30, 1977

Appl. No.:

5/811592

Inventors:

Henry Heinz - Berea OH

Assignee:

Union Carbide Corporation - New York NY

International Classification:

H01M 212

US Classification:

429 54

Abstract:

A galvanic cell having a primary radial type seal in conjunction with a secondary resealable vent closure, said resealable vent closure comprising a resilient elastomeric sponge gasket disposed and compressed between the upper surface of the cell's cover and the rim of the cell's container, which is turned over the upper surface of the cover, so as to facilitate the venting of any high pressure gases that may escape past the radial seal while retaining liquid.