Howard J Ellis

US Patent:

44097280, Oct 18, 1983

Filed:

Jun 15, 1981

Appl. No.:

6/274030

Inventors:

Howard F. Ellis - Stephentown NY
James S. Kresge - Pittsfield MA

Assignee:

General Electric Company - NY

International Classification:

H01C 1702

US Classification:

29613

Abstract:

A high voltage varistor for DC operation is manufactured by applying a glass collar to the perimeter of a sintered zinc oxide disc and heat treated between about 750. degree. C. and 400. degree. C. for several cycles in air. After heat treating, an organic resin or ceramic coating is applied to the glass collar to further insulate the varistor for high voltage application.

US Patent:

39595439, May 25, 1976

Filed:

May 6, 1974

Appl. No.:

5/467442

Inventors:

Howard F. Ellis - Stephentown NY

Assignee:

General Electric Company

International Classification:

B32B 302
B32B 1500

US Classification:

428 66

Abstract:

A zinc oxide compound non-linear resistance surge arrester disc is provided with a glass anti-flashover collar having a relatively low fusing temperature and a relatively low coefficient of thermal expansion. The glass comprises the following constituents in proportion to one-another by weight: About 44. 5% lead oxide, About 24. 5% zinc oxide, About 20. 5% boric oxide, About 4. 5% silicon oxide, and About 6. 0% cupric oxide.

US Patent:

43740499, Feb 15, 1983

Filed:

Jun 6, 1980

Appl. No.:

6/157097

Inventors:

Howard F. Ellis - Stephentown NY
Herbert Fishman - Pittsfield MA

Assignee:

General Electric Company

International Classification:

H01B 106

US Classification:

252519

Abstract:

Zinc oxide varistors having high resistance and exponent values are fabricated from a composition consisting essentially of the oxides of zinc, tin, bismuth, antimony, manganese, nickel, cobalt and boron. The composition does not contain barium oxide or silicon dioxide and still retains long term stability properties.

US Patent:

43171010, Feb 23, 1982

Filed:

Oct 27, 1980

Appl. No.:

6/201182

Inventors:

Howard F. Ellis - Stephentown NY
James S. Kresge - Pittsfield MA

Assignee:

General Electric Company

International Classification:

H01C 710

US Classification:

338 21

Abstract:

A high voltage varistor for DC operation is manufactured by applying a glass collar to the perimeter of a sintered zinc oxide disc and heat treated between about 750. degree. C. and 400. degree. C. for several cycles in air. After heat treating, an organic resin or ceramic coating is applied to the glass collar to further insulate the varistor for high voltage application.

US Patent:

52648192, Nov 23, 1993

Filed:

Dec 9, 1992

Appl. No.:

7/988348

Inventors:

Herman F. Nied - Clifton Park NY
Howard F. Ellis - Queensbury NY

Assignee:

Electric Power Research Institute, Inc. - Palo Alto CA

International Classification:

H01C 710

US Classification:

338 21

Abstract:

A varistor with a body including an outer perimeter and substantially parallel opposed ends is surrounded on its outer perimeter by a collar formed from a high temperature polymer. Electrodes are fixed to the parallel opposed ends of the varistor such that they extend at least to the interior edge of the collar. A method of making the varistor is also described.

US Patent:

42765781, Jun 30, 1981

Filed:

May 10, 1979

Appl. No.:

6/037874

Inventors:

Lionel M. Levinson - Schenectady NY
Howard F. Ellis - Stephentown NY
Herbert Fishman - Pittsfield MA

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02H 322

US Classification:

361127

Abstract:

A station arrester employing metal oxide varistors has varistors whose capacitances increase in a direction measured from the ground side of the arrester. An approximately uniform voltage distribution can be produced across the varistors when appropriately graded according to their positions in the varistor stack. In this configuration, the varistor disks located near the top or line end of the stack are not subjected to increased thermal stresses.