Nan Yu Lin

US Patent:

43692362, Jan 18, 1983

Filed:

Mar 4, 1981

Appl. No.:

6/240402

Inventors:

Dennis D. O'Rell - Boxborough MA
Wai M. Choi - West Newton MA
Nan J. Lin - Burlington MA

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

H01M 218

US Classification:

429147

Abstract:

The instant invention is directed to a sheet product capable of forming an improved battery separator. The present sheet product is formed from a thin, acid-stable, porous material and has a first and a second major face with a plurality of separate, continuous, open channels on each major face such that each channel on each major face defines a separation between two channels on the other major face. Further, each channel defines an imaginary median line with at least some portions of at least some channels extending laterally with respect to the imaginary median line and each channel has at least one continuous contour line in the form of straight line segments such that every portion of each channel is capable of being at an acute angle of not greater than 70 degrees from an imaginary vertical line orientated from bottom to top of a battery containing the sheet product.

US Patent:

42282250, Oct 14, 1980

Filed:

Jun 22, 1979

Appl. No.:

6/051175

Inventors:

Dennis D. O'Rell - Boxboro MA
Nan J. Lin - Burlington MA

Assignee:

W. R. Grace & Co. - Cambridge MA

International Classification:

H01M 218

US Classification:

429147

Abstract:

A battery separator embossed with a configuration that is neither vertical corrugation or vertical rib and yet in which all of the surface areas of the two separator faces open or slant upwardly except the portions actually directly engaged against a battery plate. Thus all intended recesses in the faces of the battery separator are open at their upper extremity so that no gas can be trapped by the configuration of the battery separator embossment. Additionally the division portions between the embossed recesses on the positive plate engaging face are in continuous engagement with the positive battery plate from the bottom of the plate to the top of the plate which provides stability to the raised areas of the battery separator that engage the negative battery plate.

US Patent:

43682430, Jan 11, 1983

Filed:

Mar 4, 1981

Appl. No.:

6/240401

Inventors:

Dennis D. O'Rell - Boxborough MA
Nan J. Lin - Burlington MA

Assignee:

W. R. Grace & Co. - New York NY

International Classification:

H01M 218

US Classification:

429147

Abstract:

The instant invention is directed to a sheet product capable of forming an improved battery separator. The present sheet product is formed from a thin, acid-stable, porous material and has a first and a second major face with a plurality of separate, continuous, open channels on each face such that each channel on each major face defines a separation between two channels on the other major face. Further, each channel defines an imaginary medium line with at least some portions of at least some channels extending laterally with respect to the imaginary medium line, and every portion of each channel is capable of being at an acute angle of not greater than 70 degrees from an imaginary vertical line oriented from bottom to top of a battery containing the sheet product.