Gregory Weeks

US Patent:

6720058, Apr 13, 2004

Filed:

Jun 2, 2000

Appl. No.:

09/555747

Inventors:

Gregory Paul Weeks - Hockessin DE
Paul Felix Pustolski - Newark DE

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

D04H 1100

US Classification:

428 94, 428 95, 428 89, 428 92, 428 93

Abstract:

A pile article having a support strand for attachment to multifilament yarn to form a velour-like pile having loosely entangled filaments in spaced apart monolithic pile rows, a helically wound package of oriented pile articles for shipping and storage, and a pile surface structure comprising pile articles arranged in spaced apart rows on a substrate to form a pile surface that may be flat or moldable, and a method for making a pile surface structure by embedding the pile articles into the backing substrate. The pile surface structures may be usefully employed in automobile mats, carpets and panels.

US Patent:

20110041232, Feb 24, 2011

Filed:

May 1, 2009

Appl. No.:

12/990032

Inventors:

Carmen A Covelli - Chadds Ford PA, US
Douglas K. Farmer - Greensboro NC, US
Becky J. Rose - Blair OK, US
Gregory P. Weeks - Hockessin DE, US

Assignee:

INVISTA North America S.a.r.I. - Wilmington DE

International Classification:

A41D 1/00
A42B 1/04
A41B 9/00
A41D 19/00
A41F 9/00
A41B 11/00
A41D 27/00

US Classification:

2 69, 2171, 2400, 2167, 2236, 2239, 22431

Abstract:

Articles comprising garments with at least one opening layers are included. The articles may include an elastic polymer composition such as a film, a melt or an aqueous dispersion.

US Patent:

54369800, Jul 25, 1995

Filed:

Dec 22, 1992

Appl. No.:

7/995184

Inventors:

Gregory P. Weeks - Hockessin DE
Akhileswar G. Vaidyanathan - Hockessin DE
Michael J. Merrill - New Castle DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

G06K 900

US Classification:

382141

Abstract:

A method for determining the quality of dispersion of glass fibers in a thermoplastic resin preform layer compares the mean characteristic length of the glass fiber bundles in the preform layer to a predetermined value indicative of dispersion of the glass fibers. The thermoplastic resin preform layer characterized by this method comprises a plurality of individual glass fibers and some degree of undispersed glass fiber bundles intimately mixed with a plurality of discrete thermoplastic fibers. The glass fibers are introduced to the mixture having a length of about 1 cm. to about 8 cm. After mixing, some of the glass fiber bundles break up, and some residual glass fiber bundles remain. A preform layer which has acceptable dispersion has residual glass fiber bundles having a mean apparent length of less about 1. 365 mm.

US Patent:

51340160, Jul 28, 1992

Filed:

Oct 31, 1990

Appl. No.:

7/606651

Inventors:

James E. Geary - Boothwyn PA
Gregory P. Weeks - Hockessin DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

B32B 2714

US Classification:

428198

Abstract:

A method of preparing porous fiber reinforced polymer composite sheets has been developed to allow a more efficient preheating of the sheet prior to molding and includes the steps of blending reinforcing fibers with resin matrix forming fibers to form a web. This web is then heated to a temperature wherein the resin matrix forming fibers melt and envelope the reinforcing fibers, taking them together at crossover points. The resultant web can then be directly heated very efficiently for molding. This web is highly porous allowing rapid heating at moderate pressure differentials during subsequent preheat steps. The microstructure created when the resin matrix forming fibers are initially melted further enhances heating capability because the structure retains porosity during the subsequent heating step required for molding. Because the resin matrix forming fibers initially were uniformly blended, a highly uniform distribution of polymeric material within the reinforcing fiber matrix yields molded parts with very uniform properties.

US Patent:

51941066, Mar 16, 1993

Filed:

Feb 10, 1992

Appl. No.:

7/833040

Inventors:

James E. Geary - Boothwyn PA
Gregory P. Weeks - Hockessin DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

B32B 516

US Classification:

156 626

Abstract:

A method of preparing porous fiber reinforced polymer composite sheets has been developed to allow a more efficient preheating of the sheel prior to molding and includes the steps of blending reinforcing fibers with resin matrix forming fibers to form a web. This web is then heated to a temperature wherein the resin matrix forming fibers melt and envelope the reinforcing fibers, tacking them together at crossover points. The resultant web can then be directly heated very efficiently for molding. This web is highly porous allowing rapid heating at moderate pressure differentials during subsequent preheat steps. The microstructure created when the resin matrix forming fibers are initially melted further enhances heating capability because the structure retains porosity during the subsequent heating step required for molding. Because the resin matrix forming fibers initially were uniformly blended, a highly uniform distribution of polymeric material within the reinforcing fiber matrix yields molded parts with very uniform properties.

US Patent:

51642557, Nov 17, 1992

Filed:

Nov 12, 1991

Appl. No.:

7/789488

Inventors:

Gregory P. Weeks - Hockessin DE

Assignee:

E. I. Du Pont de Nemours and Company - Wilmington DE

International Classification:

D04H 0000
D02G 300
B32B 900
B32B 506

US Classification:

428294

Abstract:

A nonwoven planar preform sheet for a polymer composite consisting of 20% to 80% by weight reinforcing fibers and 20% to 80% by weight matrix resin, the reinforcing fibers being from 1/8 to 6 inches in length from 1 to 50 micrometers in diameter, and being arrayed in the composite as chips of from 2 to 5000 parallel filaments, each substantially uniformly coated with matrix resin, all of the filaments of each chip ending in a single plane orthogonal to the filament direction, where the thickness of the chips is from 1 to 50 filament diameters and the length to thickness ratio is greater than 100. The chips may be either randomly oriented or oriented in the same direction in the plane of the sheet.

US Patent:

61759856, Jan 23, 2001

Filed:

Nov 4, 1998

Appl. No.:

9/185543

Inventors:

Jeffrey Allen Chambers - Hockessin DE
Gregory Weeks - Hockessin DE

Assignee:

E. I. Du Pont de Nemours & Company - Wilmington DE

International Classification:

B05C 1702

US Classification:

1523012

Abstract:

A paint roller includes a core tube having first and second opposite axial ends. At least one tuftstring is spirally wrapped around the core tube and adhesively or otherwise bound to the core tube.