Joseph I Rowan

US Patent:

57638241, Jun 9, 1998

Filed:

Oct 23, 1996

Appl. No.:

8/735838

Inventors:

David Robert King - Elkton MD
Bradley E. Reis - Wilmington DE
Joseph C. Rowan - Hockessin DE

Assignee:

W. L. Gore & Associates, Inc. - Newark DE

International Classification:

H05K 900

US Classification:

174 35R

Abstract:

A cover or lid assembly is provided for EMI/RFI shielding. The cover or lid is used in combination with an electrical assembly having an electrical ground, at least one electronic component electrically connected to the assembly, a conductive frame, disposed about the electronic component. The conductive frame is electrically connected to the ground. An electrically conductive adhesive is disposed continuously between the frame and the lid to mount the lid to the conductive frame to shield the electronic component from electromagnetic and radio frequency interference.

US Patent:

47852682, Nov 15, 1988

Filed:

Jul 30, 1987

Appl. No.:

7/079686

Inventors:

Jeffrey A. Walter - Wilmington DE
Kailash C. Garg - Newark DE
Joseph C. Rowan - Wilmington DE
Robert H. Gibson - Elkton MD

Assignee:

W. L Gore & Associates, Inc. - Newark DE

International Classification:

H01P 900
H01P 902

US Classification:

333157

Abstract:

A delay line is provided for effecting a desired delay in the transmission of electromagnetic waves in the microwave and millimeter range of the spectrum. The line comprises a length L of a dielectric waveguide for transmission of electromagnetic waves comprising a core of polytetrafluoroethylene having one or more layers of polytetrafluoroethylene overwrapped around the core, wherein T=KL/c, in which T is the total time delay , c is the velocity of light in free space and K is the delay constant of the dielectric waveguide. Preferably, the delay line is overwrapped around a mandrel.

US Patent:

47927747, Dec 20, 1988

Filed:

Sep 29, 1987

Appl. No.:

7/101987

Inventors:

Jeffrey A. Walter - Wilmington DE
Kailash C. Garg - Newark DE
Joseph C. Rowan - Wilmington DE

Assignee:

W. L. Gore & Associates, Inc. - Newark DE

International Classification:

H01P 1162

US Classification:

333251

Abstract:

A dielectric waveguide for the transmission of electromagnetic waves is provided comprising a core of polytetrafluoroethylene (PTFE), one or more layers of PTFE cladding overwrapped around the core, the core and/or cladding having mode suppression filters of an electromagnetically glossy material embedded therein, and an electromagnetic shielding layer covering the cladding. The mode suppression filters are preferably mica cards.

US Patent:

57610533, Jun 2, 1998

Filed:

May 8, 1996

Appl. No.:

8/643292

Inventors:

David Robert King - Elkton MD
Joseph C. Rowan - Wilmington DE
Daniel D. Johnson - Yorklyn DE
Bradley E. Reis - Wilmington DE

Assignee:

W. L. Gore & Associates, Inc. - Newark DE

International Classification:

H05K 900

US Classification:

361818

Abstract:

A Faraday cage is provided for EMI/RFI shielding which includes a substrate having an electrical ground; at least one electronic component electrically connected to the substrate; a conductive housing; and an electrically conductive adhesive. The electrically conductive adhesive may be defined by a substrate having numerous passageways through the substrate. The passageways are defined by a plurality of walls of the material making up the substrate. The walls are covered with a layer of conductive metal. The passageways are filled with a non-conductive adhesive resin. The conductive housing is adhesively electrically mounted to the electrical ground of the substrate, over the electronic component, to shield electromagnetic and radio frequency interference.

US Patent:

48750263, Oct 17, 1989

Filed:

Aug 17, 1987

Appl. No.:

7/086403

Inventors:

Jeffrey A. Walter - Wilmington DE
Kailash C. Garg - Newark DE
Joseph C. Rowan - Wilmington DE

Assignee:

W. L. Gore & Associates, Inc. - Newark DE

International Classification:

H01P 1162

US Classification:

333251

Abstract:

A dielectric waveguide for the transmission of electromagnetic waves is provided comprising a core of polytetrafluoroethylene (PTFE), one or more layers of PTFE cladding overwrapped around the core, a mode suppression layer of an electromagnetically lossy material covering the cladding and an electromagnetic shielding layer covering the mode suppression layer. The mode suppression layer is preferably a tape of carbon-filled PTFE. Another electromagnetically lossy material layer may be placed around the shield to absorb any extraneous energy.