Edward Richard Kaufman

US Patent:

44877293, Dec 11, 1984

Filed:

Mar 15, 1983

Appl. No.:

6/475498

Inventors:

Edward R. Kaufman - Andover MA

Assignee:

P. T. Brake Lining Company - Lawrence MA

International Classification:

B29H 526
B29J 500

US Classification:

264 26

Abstract:

A friction material for use as a brake lining in automobiles, trucks, buses or similar vehicles. The brake lining contains no more than traces of asbestos and utilizes the mineral vermiculite as a basic constituent. The formulation of the brake lining comprises a non-fibrous natural or synthetic mineral or mineral-like material which on being compressed at ambient temperatures and at pressures of 1700 to 2600 p. s. i. has significant green strength in the order of 2 to 25 p. s. i. and also has appropriate thermal resistance, frictional properties, and shear and flexural strengths, together with a thermosetting resin as the basic components together with other organic and inorganic materials as friction modifiers and fillers. The mineral preferably comprises vermiculite, and together with the resin comprises preferably about 35% to 100% by weight of the brake lining formulation. The ratio by weight of resin to vermiculite is preferably in a range having a upper limit not exceeding about 1. 2/1 to 1.

US Patent:

44616430, Jul 24, 1984

Filed:

Sep 30, 1982

Appl. No.:

6/430775

Inventors:

Edward R. Kaufman - Andover MA

Assignee:

Glennco Trust - Lawrence MA

International Classification:

C08K 314
C08K 318
C08J 514

US Classification:

106 36

Abstract:

A friction material for use as a brake lining in automobiles, trucks, buses or similar vehicles. The brake lining contains no more than traces of asbestos and utilizes the mineral vermiculite as a basic constituent. The formulation of the brake lining comprises a non-fibrous natural or synthetic mineral or mineral-like material which on being compressed at ambient temperatures and at pressures of 1700 to 2600 p. s. i. has significant green strength in the order of 2 to 25 p. s. i. and also has appropriate thermal resistance, frictional properties, and shear and flexural strengths, together with a thermosetting resin as the basic components together with other organic and inorganic materials as friction modifiers and fillers. The mineral preferably comprises vermiculite, and together with the resin comprises preferably about 35% to 100% by weight of the brake lining formulation. The ratio by weight of resin to vermiculite is preferably in a range having a upper limit not exceeding about 1. 2/l to 1.

US Patent:

43884237, Jun 14, 1983

Filed:

Jul 29, 1982

Appl. No.:

6/402835

Inventors:

Edward R. Kaufman - Andover MA
Gregory R. Benson - Dracut MA
Alfred Shaines - Waban MA

Assignee:

Glennco Trust - Lawrence MA

International Classification:

C08J 514

US Classification:

523153

Abstract:

A friction material for use as a brake lining in automobiles, trucks, buses or similar vehicles. The brake lining contains no more than traces of asbestos and utilizes the mineral vermiculite as a basic constituent. The formulation of the brake lining comprises a non-fibrous natural or synthetic mineral or mineral-like material together with a small quantity of non-asbestos fibers and acicular mineral particles which on being compressed at ambient temperatures and at pressures of 1700 to 2600 p. s. i. has significant green strength in the order of 2 to 25 p. s. i. and also has appropriate thermal resistance, frictional properties, and shear and flexural strengths, together with a thermosetting resin as the basic components together with other organic and inorganic materials as friction modifiers and fillers. The mineral preferably comprises vermiculite, and together with the resin comprises preferably about 35% to 95% by weight of the brake lining formulation. The ratio by weight of resin to vermiculite is preferably in a range having a upper limit not exceeding about 1. 2/1 to 1.

US Patent:

44329229, Feb 21, 1984

Filed:

Mar 15, 1983

Appl. No.:

6/475497

Inventors:

Edward R. Kaufman - Andover MA
Gregory R. Benson - Dracut MA
Alfred Shaines - Waban MA

Assignee:

Glennco Trust - Lawrence MA

International Classification:

D04H 316

US Classification:

264119

Abstract:

A process for molding a friction material for use as brake lining in automobiles, trucks, buses or similar vehicles. The brake lining contains no more than traces of asbestos and utilizes the mineral vermiculite as a basic constituent. The formulation of the brake lining comprises a non-fibrous natural or synthetic mineral or mineral-like material which on being compressed at ambient temperatures and at pressures of 1700 to 2600 p. s. i. has significant green strength in the order of 2 to 25 p. s. i. and also has appropriate thermal resistance, frictional properties, and shear and flexural strengths, together with a thermosetting resin as the basic components together with other organic and inorganic materials as friction modifiers and fillers. The mineral preferably comprises vermiculite, and together with the resin comprises preferably about 35% to 95% by weight of the brake lining formulation. The ratio by weight of resin to vermiculite is preferably in a range having a upper limit not exceeding about 1. 2/1 to 1.