Richard N Worley

US Patent:

6359214, Mar 19, 2002

Filed:

Oct 28, 1999

Appl. No.:

09/429201

Inventors:

Richard N. Worley - Cedar Park TX
Leroy Jones, Jr. - Round Rock TX
Steve L. Williams - Round Rock TX

Assignee:

Dell Products, L.P. - Round Rock TX

International Classification:

H05K 900

US Classification:

174 35GC, 174 35 R, 361818, 277920

Abstract:

An EMI gasket ( ) includes a plurality of serrations ( ) along at least one edge ( ). The serrations ( ) are arranged side-by-side so that each may be articulated individually. That is, one of the serrations ( ) may be displaced significantly out of the plane of the gasket without affecting adjacent serrations. Thus, when the edge of the gasket ( ) is compressed between two surfaces which include a discontinuity ( ) such as a step or protuberance between them, the serration in contact with the discontinuity is displaced out of the plane of the gasket without displacing adjacent portions of the gasket. Allowing a portion of an EMI gasket ( ) to be displaced out of the plane of the gasket without affecting adjacent portions of the gasket substantially reduces or eliminates gaps which occur due to the failure of the gasket to precisely follow the contour of a component.

US Patent:

6525267, Feb 25, 2003

Filed:

Jun 14, 2002

Appl. No.:

10/171962

Inventors:

Richard Worley - Cedar Park TX
Chase Berry - Leander TX

Assignee:

Dell Products L.P. - Round Rock TX

International Classification:

H05K 900

US Classification:

174 35GC, 361816, 361799, 361753, 361818

Abstract:

A chassis discontinuity seal includes a gasket member comprising a compressible material with an interruption on its peripheral surface and a flexible sealing material spanning the interruption. The gasket member is placed on a first surface for sealing engagement with a mating closure surface. The compressible material has a first density and the interruption defines an elongated portion of the gasket having a second density, less than the first density. The gasket may be used in any shielding enclosure where it is desirable to reduce the compression force while maintaining high surface conductivity.

US Patent:

6555743, Apr 29, 2003

Filed:

Aug 4, 2000

Appl. No.:

09/632478

Inventors:

Richard N. Worley - Cedar Park TX
Steve L. Williams - Round Rock TX
Leroy Jones, Jr. - Round Rock TX

Assignee:

Dell Products L.P. - Round Rock TX

International Classification:

H05K 900

US Classification:

174 35R, 361800, 361816

Abstract:

A computer system including a number of option bays that accommodate optional peripheral equipment, such as CD-ROM drives, DVD drives, magnetic tape backup systems and Zip drives. An unpopulated bay is segmented into compartments by a divider that extends through substantially the entire depth of the bay so that each of the compartments operates as a waveguide beyond frequency cutoff (WBFC). The resulting compartments are characterized by cross-sectional dimensions that are less than the cross-sectional dimensions of the bay, so that the compartmentalization effects substantially enhanced attenuation of electromagnetic signals having a frequency at the highest expected operating frequency of the computer system.

US Patent:

6570755, May 27, 2003

Filed:

Jun 20, 2001

Appl. No.:

09/885368

Inventors:

James D. Curlee - Round Rock TX
Richard Worley - Cedar Park TX
Jason Alan Shepherd - Austin TX

Assignee:

Dell Products L.P. - Round Rock TX

International Classification:

G06F 120

US Classification:

361683, 361727, 439710

Abstract:

A computer chassis includes a metal chassis base portion and a metal chassis top portion. A pivotal connection is provided between the top portion and the base portion for movement of the top portion between an open position and a closed position with the base portion. A tongue and groove edge connection extends between the top portion and the base portion. An adhesive free gasket is mounted in the groove for sealing engagement with the tongue.

US Patent:

6738919, May 18, 2004

Filed:

Jan 26, 2001

Appl. No.:

09/771094

Inventors:

Steven L. Williams - Round Rock TX
Richard N. Worley - Cedar Park TX
Satish N. Pratapneni - Milpitas CA
Leroy Jones, Jr. - Round Rock TX

Assignee:

Dell Products L.P. - Round Rock TX

International Classification:

G06F 112

US Classification:

713401, 361818, 333 12

Abstract:

A technique for reducing electromagnetic interference (EMI) in electronic systems that provides a phase shift between signals having a common frequency component propagating on adjacent portions of circuit board signal traces. The phase shift is produced by a delay element in one of the adjacent signal traces. In one example, the delay element includes a serpentine delay located at the signal generating circuit side of the adjacent portion of the signal trace. Such a technique can be used to reduce EMI emissions from clock signals provided to RAM circuits of a system memory of a computer system.

US Patent:

7272009, Sep 18, 2007

Filed:

Jun 2, 2005

Appl. No.:

11/143164

Inventors:

Lisa Sura - Pflugerville TX, US
Darren B. Pav - Round Rock TX, US
Richard Worley - Cedar Park TX, US

Assignee:

Dell Products L.P. - Round Rock TX

International Classification:

H05K 7/20

US Classification:

361719, 361715, 361785, 165 803, 439159, 439362

Abstract:

A heat sink retention apparatus includes a base member and a heat sink mount including a pivotal base coupler and a board mounting member, whereby the heat sink mount is operable to mount to a board by engaging the pivotal base coupler with the base member and engaging the board mounting member with the board. A cable routing member and a connector storage member may be included on the heat sink mount for the routing of cables and the storing of connectors. A card retention device may be provided which is operable to couple to the heat sink mount and engage a card to retain the card on the board.

US Patent:

20070176607, Aug 2, 2007

Filed:

Jan 27, 2006

Appl. No.:

11/341272

Inventors:

Raymond McCormick - Round Rock TX, US
Jeffrey Hailey - Austin TX, US
Richard Worley - Cedar Park TX, US

International Classification:

G01R 27/28

US Classification:

324627000

Abstract:

Information handling system chassis RF shielding is accurately characterized in a repeatable and rapid manner with a stirring device disposed within the chassis. An RF signal from an RF signal source disposed in the chassis emits a more homogeneous and uniform field due to movement of reflective surfaces of the stirring device within the chassis. For example, an RF receiver located outside the chassis measures the RF signal received from the chassis over one or more complete revolutions of the stirring device to provide improved uniformity of the RF field maximized or averaged over each revolution. The reflective surface is interchangeable to support testing of shielding for chassis of different sizes and rotate vertically and horizontally to average out both vertical and horizontal polarization.

US Patent:

62521616, Jun 26, 2001

Filed:

Nov 22, 1999

Appl. No.:

9/444068

Inventors:

Jeffrey C. Hailey - Austin TX
Richard N. Worley - Cedar Park TX

Assignee:

Dell USA, L.P. - Round Rock TX

International Classification:

H05K 900

US Classification:

174 35R

Abstract:

A data processing system including but not limited to an enclosure of the data processing system having a waveguide-below-cutoff EMI-attenuating air ventilation structure formed from a dielectric-conductor combination material, the enclosure of the data processing system containing at least one data processing system component selected from the group including but not limited to a processor, a memory, a bridge, a bus, a graphics processor, a network card, an isochronous device. A related method for manufacturing a waveguide-below-cutoff EMI-attenuating air ventilation structure including but not limited to forming at least one aperture structured to attenuate at least one specified electromagnetic energy waveform within a dielectric-conductor combination material.