David M Flanagan

Address:

1324 Ballantrae Farm Dr, Mc Lean, VA 22101

Phone:

7038932119

VIN:

SAJDA43B975B06760

Make:

JAGUAR

Model:

XK-SERIES

Year:

2007

US Patent:

7737225, Jun 15, 2010

Filed:

Dec 14, 2005

Appl. No.:

11/302326

Inventors:

Paul Touchet - Woodbridge VA, US
Alan R. Teets - Middletown DE, US
David P. Flanagan - Alexandria VA, US
Charles G. Pergantis - Wilmington DE, US

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

C08F 8/42

US Classification:

525368, 5253291, 5253292, 5253293, 525372

Abstract:

An elastomer composition includes a polymer system made up of a majority of HNBR polymer and an optional polymer additive such as carboxylated nitrile, ethylene-propylene-diene rubber, isoprene rubber, chloroprene rubber, acrylonitrile-butadiene rubber, butyl rubber, isoprene rubber, natural rubber and hydrogenated carboxylated butadiene acrylonitrile terpolymer, and combinations thereof. The polymer system totals 100 parts by weight. A cure system for the elastomer composition includes 1. 5 to 30 parts by weight of zinc, magnesium or calcium oxide, 15 to 50 parts by weight of an α,β-ethylenically unsaturated carboxylic acid and an organoperoxide. Under vulcanization conditions, the elastomer composition cures through the in situ formation of a metal carboxylate. A degradation inhibitor for an elastomer composition that includes an amine and an imidazole along with an optional polymerized quinoline is noted to be particularly effective.

US Patent:

52642909, Nov 23, 1993

Filed:

Mar 4, 1992

Appl. No.:

7/793074

Inventors:

Paul Touchet - Woodbridge VA
Gumersindo Rodriguez - Fredericksburg VA
Paul E. Gatza - Alexandria VA
D. Patrick Butler - Alexandria VA
Dawn M. Crawford - Stafford VA
Alan R. Teets - Springfield VA
Henry O. Feuer - Woodbridge VA
David P. Flanagan - Alexandria VA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

B32B 2500
B32B 2700
C08K 304

US Classification:

428492

Abstract:

A highly improved elastomeric composition, process, and articles made thef, wherein the novel composition is characterized by greatly increased wear longevity, thermomechanical stability, highly improved tear and tensile strength at high temperature usage, in addition to high resistance to burning in open flame, as well as high resistance to cutting, chipping, cracking and crack propagation particularly in product use for tank track pads and other related track system elastomeric component products; wherein the improved composition is a unique combination of its respective polymer, filler, curing and antidegradant system, in which the polymer system either consists of about 100 parts by weight of highly saturated nitrile polymer or of various novel blends of the highly saturated usually in majority amounts together with minority amounts of carboxylated nitrile, with or without additional minority or near equal parts of nitrile rubber; and wherein the curing system may include various blends of from between about 1. 5 to about 30 parts by weight of a metallic oxide, along with from between about 25 to about 50 parts by weight of a metallic methyl-methacrylate resin, together with from about 0. 25 to about 3 parts by weight of a curative compound; which composition is further well suited for manufacture of various abutment and motion stop or limit members subjectable to repetitive engagement by moving mechanisms, and for various at least semi-flexible baffle or skirt-like members useable with various air cushion type vehicles or the like.

US Patent:

48431141, Jun 27, 1989

Filed:

Jan 29, 1988

Appl. No.:

7/150107

Inventors:

Paul Touchet - Woodbridge VA
Gumersindo Rodriguez - Fredericksburg VA
Paul E. Gatza - Alexandria VA
Daniel P. Butler - Alexandria VA
Dawn Crawford - Stafford VA
Alan R. Teets - Springfield VA
Hank O. Feuer - Woodbridge VA
David P. Flanagan - Alexandria VA

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

C08K 304
C08F 800

US Classification:

524 87

Abstract:

A highly improved elastomeric composition, process, and articles made thef, wherein the novel composition is characterized by greatly increased wear longevity, thermomechanical stability, highly improved tear and tensile strength at high temperature useage, in addition to high resistance to burning in open flame, as well as high resistance to cutting, chipping, cracking and crack propagation particularly in product use for tank track pads and other related track system elastomeric component products; wherein the improved composition is a unique combination of its respective polymer, filler, curing and antidegradant systems, in which the polymer system either consists of about 100 parts by weight of highly saturated nitrile polymer or of various novel blends of the highly saturated nitrile usually in majority amounts together with minority amounts of carboxylated nitrile, with or without additional minority or near equal parts of nitrile rubber; and wherein the curing system may include various blends of from between about 1. 5 to about 30 parts by weight of a metallic oxide, along with from between about 25 to about 50 parts by weight of a metallic methyl-methacrylate resin, together with from about 0. 25 to about 3 parts by weight of a curative compound; which composition is further well suited for manufacture of various abutment and motion stop or limit members subjectable to repetitive engagement by moving mechanisms, and for various at least semi-flexible baffle or skirt-like members useable with various air cushion type vehicles or the like.