Donald J Mcdowell

US Patent:

51222140, Jun 16, 1992

Filed:

Feb 13, 1990

Appl. No.:

7/479336

Inventors:

Thomas O. Zurfluh - Evanston IL
Donald J. McDowell - Riverside IL

Assignee:

Fel-Pro Incorporated - Skokie IL

International Classification:

B32B 3112
B32B 3118
F16J 1500

US Classification:

156220

Abstract:

A laminated gasket assembly and method of making same is disclosed. The laminated gasket assembly comprises first and second sheets, each having a thin metallic layer having a thin elastomeric coating on at least one major surface, and an elastomeric layer interposed between, and joining, the sheets, with first and second thin elastomeric coatings facing outwardly in opposite directions. The gasket assembly defines at least one elevated pressure service opening therethrough. The sheets and layers are laminated and define an embossment around a service opening, with the elastomeric layer being conformed to the embossment.

US Patent:

43515347, Sep 28, 1982

Filed:

May 12, 1980

Appl. No.:

6/149036

Inventors:

Donald J. McDowell - Riverside IL

Assignee:

Felt Products Mfg. Co. - Skokie IL

International Classification:

F16J 1506

US Classification:

277235B

Abstract:

An abrasive-erosion resistant head gasket assembly includes a flat-elongated core, a sheet of composite gasket material on each face of the base, armor to seal the combustion chambers, and bodies of abrasive-erosion resistant elastomeric material at each end of the gasket assembly. The abrasive-erosion resistant bodies are selectively applied to the end zones of the gasket assembly where abrasive-erosion is normally at a maximum. The bodies resist abrasive-erosion. The bodies are applied to the facing material or in zones from which the facing materials have been removed and preferably are cured concurrently with the lamination and curing of the facing materials.

US Patent:

43255590, Apr 20, 1982

Filed:

May 12, 1980

Appl. No.:

6/149120

Inventors:

Daniel E. Czernik - Hinsdale IL
Donald J. McDowell - Riverside IL

Assignee:

Felt Products Mfg. Co. - Skokie IL

International Classification:

F16J 1506

US Classification:

277235B

Abstract:

A multi-layer engine gasket is provided for resisting scoring, scratching and abrasive-erosion. The gasket assembly includes a flat-elongated core or base, a sheet of composite gasket material on each face of the base, armor to seal the combustion chambers, and an exterior layer of erosion resistant material applied to the facing sheets along one or more of the two shorter ends of the gasket assembly. Apertures are provided for the combustion chambers, the water and fluid passageways and the head bolts. The abrasive-erosion resistant layer is a mixture of molybdenum disulfide and graphite, preferably with a minor amount of a binder and adhesion promoter. The abrasive-erosion resistant layer is selectively applied to the end zones of the gasket assembly.

US Patent:

39806278, Sep 14, 1976

Filed:

Apr 17, 1975

Appl. No.:

5/568990

Inventors:

Donald J. McDowell - Riverside IL
Purshottam S. Patel - Elk Grove Village IL

Assignee:

Felt Products Mfg. Co. - Skokie IL

International Classification:

C08F21800
C08F22000
C08F12002
C08F22200

US Classification:

526328

Abstract:

An anaerobic sealant composition capable of polymerizing upon exclusion of air comprises (1) a polyacrylic ester monomer, (2) an inorganic salt initiator which can be a persulfate or a perchlorate of ammonium, alkali metal or an alkaline earth metal, (3) an accelerator which can be a N,N-di(lower alkyl) amide of a monocarboxylic aliphatic acid, an organic carboximide of a polycarboxylic acid, or an organic sulfimide of a carboxylic acid, and (4) a quinone-type polymerization inhibitor. The composition is prepared by compounding the aforementioned ingredients and suitably aging the resulting formulation.

US Patent:

46594108, Apr 21, 1987

Filed:

Apr 1, 1985

Appl. No.:

6/718643

Inventors:

Donald J. McDowell - Riverside IL
Jerri L. Cooper - Lombard IL

Assignee:

Felt Products Mfg. Co. - Skokie IL

International Classification:

B32B 3112

US Classification:

156277

Abstract:

A method of making a gasket assembly of enhanced sealing characteristics comprising the steps of providing a gasket body having an expansive metallic core and at least one compressible fiber-elastomer facing layer and defining at least one clear-through opening, providing a silk screen through which a fluid silicone sealant material is adapted to be squeezed in a desired sealing pattern onto the gasket body, squeezing through the silk screen a fluid, moisture-carbon dioxide curable, silicone sealant material which is curable in the presence of high humidity and carbon dioxide levels into a desired sealing pattern onto the facing layer without intervening barrier coats, preheating the gasket body to a temperature of from about 170. degree. F. to about 185. degree. F. for about 30 to 60 seconds without added moisture, positioning the patterned gasket body in a chamber, and exposing the gasket body in the chamber to a conditioned atmosphere of humidity of at least about 85% relative humidity and of a carbon dioxide volume percent of from about 9 to about 13%, for from about 5 to about 8 minutes, thereby to cure the silicone sealant material to form an elastomeric silicone sealing pattern on the gasket body.

US Patent:

41661699, Aug 28, 1979

Filed:

May 22, 1978

Appl. No.:

5/908253

Inventors:

Purshottam S. Patel - Elk Grove Village IL
Donald J. McDowell - Riverside IL

Assignee:

Felt Products Mfg. Co. - Skokie IL

International Classification:

C09J 314
C08K 508
C08K 522

US Classification:

526313

Abstract:

An anaerobic sealant composition capable of polymerizing upon exclusion of air comprises (1) a polymerizable mixture of polyacrylic ester monomer which includes a polyacrylic ester derived from alkoxylated bisphenol-type compounds, (2) an inorganic salt initiator which can be a persulfate or a perchlorate of ammonium, alkali metal or an alkaline earth metal, (3) a polymerization accelerator which can be a secondary or a tertiary amine, a N,N-di(lower alkyl)amide of a monocarboxylic aliphatic acid, an organic carboximide of a polycarboxylic acid, or an organic sulfimide of a carboxylic acid, or mixtures of the foregoing, (4) a N-nitrosoamine, and (5) a quinone-type polymerization inhibitor. The composition is prepared by compounding the aforementioned ingredients and suitably aging the resulting formulation.

US Patent:

48342793, May 30, 1989

Filed:

Aug 3, 1987

Appl. No.:

7/080888

Inventors:

Donald J. McDowell - Riverside IL
John A. Michna - Skokie IL

Assignee:

Fel-Pro Incorporated - Skokie IL

International Classification:

F16J 1506
B29C 1702
B23B 906

US Classification:

277235B

Abstract:

This application discloses a method of producing gasketing material having an expansive solid metallic core and a densified facing covering a face of the core adhesively bonding a moderate density non-asbestos facing formed by a paper-making process to the core face and then, densifying the facing by compressing said facing in a series of at least 2 passes through compression rollers, thereby to densify said facing to a minimum of 80% of its ultimate density, while reducing the thickness of the facing to no more than 80% of its original thickness, all without significant distortion or destruction of said facing, and the gasketing material resulting from the practice of the method.

US Patent:

40909972, May 23, 1978

Filed:

Mar 5, 1976

Appl. No.:

5/664391

Inventors:

Purshottam S. Patel - Elk Grove Village IL
Donald J. McDowell - Riverside IL

Assignee:

Felt Products Mfg. Co. - Skokie IL

International Classification:

C09J 500
C08F 202

US Classification:

260 47UA

Abstract:

An anaerobic sealant composition capable of polymerizing upon exclusion of air comprises (1) a polyacrylic ester monomer, (2) an inorganic salt initiator which can be a persulfate or a perchlorate of ammonium, alkali metal or an alkaline earth metal, (3) a polymerization accelerator which can be a secondary or tertiary amine, a N,N-di(lower alkyl)amide of a monocarboxylic aliphatic acid, an organic carboximide of a polycarboxylic acid, or an organic sulfimide of a carboxylic acid, or mixtures of the foregoing (4) a N-nitrosoamine, and (5) a quinone-type polymerization inhibitor. The composition is prepared by compounding the aforementioned ingredients and suitably aging the resulting formulation.