Francis W Navish

US Patent:

43351794, Jun 15, 1982

Filed:

Feb 2, 1981

Appl. No.:

6/230489

Inventors:

Morris A. Mendelsohn - Wilkins Township, Allegheny County PA
Francis W. Navish - East Pittsburgh PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

B32B 700

US Classification:

428273

Abstract:

A resin impregnated spacer, useful for bracing electrical conductors, comprises a porous, flexible, heat resistant material impregnated with an epoxy resin containing Lewis acid curing agent and an effective amount of dibutylphosphite.

US Patent:

44857195, Dec 4, 1984

Filed:

Apr 8, 1982

Appl. No.:

6/366457

Inventors:

Morris A. Mendelsohn - Wilkins Township, Allegheny County PA
Francis W. Navish - East Pittsburgh PA
George E. Rudd - Murrysville PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

C08G 1883
F16J 1532

US Classification:

89 1816

Abstract:

A resilient, strong, high modulus polyurethane elastomer structural member is made from (A) a prepolymer prepared from a composition consisting essentially of 4,4'-diphenylmethane diisocyanate, low molecular weight triol, and polyoxytetramethylene glycol, and (B) hydroquinone di-(. beta. -hydroxyethyl) ether, as a chain extender.

US Patent:

43674259, Jan 4, 1983

Filed:

Jun 1, 1981

Appl. No.:

6/269133

Inventors:

Morris A. Mendelsohn - Wilkins Township, Allegheny County PA
Francis W. Navish - East Pittsburgh PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

H02K 346

US Classification:

310260

Abstract:

A compatible, gellable, dual resin system useful for impregnating porous spacers between stator end windings of turbine generators is made from (A) a liquid diallyl isophthalate component comprising an admixture of liquid diallyl isophthalate monomer and solid diallyl isophthalate prepolymer, where the weight ratio of monomer:prepolymer is between about 1. 5:1 and about 3. 0:1, (B) an amount of chain forming isocyanate terminated polyurethane prepolymer effective to provide a chain network which physically interpenetrates the liquid diallyl isophthalate component, and prevents free flow of liquid diallyl isophthalate component, (C) a chain extender for the isocyanate terminated polyurethane prepolymer, and (D) a catalyst for the diallyl isophthalate component, where the resin system is curable with the application of heat.

US Patent:

53390385, Aug 16, 1994

Filed:

Jul 6, 1992

Appl. No.:

7/910854

Inventors:

Robert A. Boenning - Timonium MD
Karl F. Schoch - Penn Hills PA
Daryl V. Stough - North Huntingdon PA
Francis W. Navish - East Pittsburgh PA

Assignee:

Westinghouse Electric Corporation - Pittsburgh PA

International Classification:

G01R 3102

US Classification:

324539

Abstract:

An assembly for protecting a conduit having a core and an axial length, which length is susceptible to being pinched by a structure is disclosed. The conduit includes an insulating coating in surrounding relationship about the core, with the assembly including a semiconductive layer in surrounding relationship about the insulating coating, and a switching layer in surrounding relationship about the semiconductive layer. The semiconductive layer being formed from partially vulcanized ethylene propylene rubber including particles of a conductive element in the form of carbon black, silver, nickel, aluminum or the like. The switching layer is non-conductive in its unstressed state and conductive when pinched such that the switching layer completes a current flow path between the semiconductive layer and either a grounded structure or another conductive layer, which condition may then be detected.

US Patent:

47390271, Apr 19, 1988

Filed:

Dec 17, 1985

Appl. No.:

6/809707

Inventors:

Morris A. Mendelsohn - Wilkins Township, Allegheny County PA
Francis W. Navish - East Pittsburgh PA
Rajender K. Sadhir - Plum Boro PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

C08G 1810
C08G 1830
C08G 1832
F41F 304

US Classification:

528 60

Abstract:

A resilient polyurethane elastomeric article is made from (A) a prepolymer prepared from a composition consisting essentially of diphenylmethane diisocyanate and polyoxytetramethylene glycol, and (B) a dual component chain extender consisting essentially of a low molecular weight triol and a material selected form one of 1,4-butanediol and resorcinol di-(beta-hydroxy ethyl) ether. The admixture can be used to impregnate or coat porous fabric material which upon cure and be used as relatively soft, flexible seals or shock isolator pads.

US Patent:

51149826, May 19, 1992

Filed:

Nov 20, 1989

Appl. No.:

7/438828

Inventors:

Morris A. Mendelsohn - Wilkins Twp., Allegheny County PA
Francis W. Navish - East Pittsburgh PA
Richard Bolton - Saratoga CA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

C08J 916
C08G 1832
C08G 1848

US Classification:

521 59

Abstract:

An acoustic foam composition comprising (a) about 1 equivalent of a polybutadiene based polyol (b) about 2. 5 to 7. 5 equivalents of a diisocyante (c) or low molecular weight diol which gives a balanced stoichiometry and (d) about 1. 5 to 6% by weight based on the total weight of the composition of hollow polymeric microspheres. The composition may be prepared by a one-step system or a prepolymer system. The foam compositions of the present invention has excellent acoustic properties.

US Patent:

54223806, Jun 6, 1995

Filed:

Jun 7, 1994

Appl. No.:

8/255859

Inventors:

Morris A. Mendelsohn - Wilkins Twp., Allegheny County PA
Richard Bolton - Saratoga CA
Francis W. Navish - East Pittsburgh PA

Assignee:

Westinghouse Electric Corporation - Pittsburgh PA

International Classification:

C08G 1800

US Classification:

521107

Abstract:

There is disclosed a sound-absorbing syntactic foam comprising expanded polystyrene microspheres, dispersed randomly in a polyurethane matrix.

US Patent:

46049401, Aug 12, 1986

Filed:

Feb 28, 1985

Appl. No.:

6/707111

Inventors:

Morris A. Mendelsohn - Wilkins Twp., Allegheny County PA
Francis W. Navish - East Pittsburgh PA

Assignee:

Westinghouse Electric Corp. - Pittsburgh PA

International Classification:

F41F 304
C08G 1832

US Classification:

89 1816

Abstract:

A resilient polyurethane elastomer structural member is made from (A) a prepolymer prepared from a composition consisting essentially of 2. 60 moles to 2. 80 moles of 4,4'-diphenylmethane diisocyanate, and about 0. 23 mole to about 0. 31 mole of a low molecular weight triol, per 1. 0 mole of polyoxytetramethylene glycol, and (B) hydroquinone di-(. beta. -hydroxyethyl) ether, as a chain extender. This polyurethane elastomer can be used to make annular missile shock isolator pads useful for the land based, MX (Peacekeeper) missile.