RUDOLF EUGENE REHQUATE
Pilots at Kirkstall Ct, Raleigh, NC

6759909, Jul 6, 2004

Jun 21, 2002

10/064217

James Edward Hughes - Apex NC
Rudolf Eugene Rehquate - Raleigh NC

International Business Machines Corporation - Armonk NY

H03L 707

331 2, 331 46, 713500, 327551

A cluster of processing systems wherein each system is set to operate at a unique operating frequency. Each unique frequency is set to differ from each other by at least a predetermined frequency differential or bandwidth. When clustered, the radiated emissions will not add. Rather, the RF energy is distributed over the predetermined frequency bandwidth and in so doing achieve a reduction of measured RF energy at any singular frequency. By using RF energy dispersal in aggregate systems, the need for special or additional RF shielding is precluded. Current design and manufacturing techniques can continue to be used. Thus, reducing the overall cost of implementing aggregated systems.

6195266, Feb 27, 2001

Mar 31, 1999

9/282838

Russell S. Padgett - Cary NC
William D. Owsley - Durham NC
Rudolf E. Rehquate - Raleigh NC
Daniel J. Hunt - Cary NC
Edward N. Dials - Apex NC
A. Lamond Hodges - Creedmoor NC

International Business Machines Corporation - Armonk NY

H05R 900

361799

A slot-type processor and one or more cache modules are incorporated into a vertically oriented, multiple chip module (CM) that is mounted to a printed circuit board. The MCM operates at ultra high frequencies and very high temperatures. Each component of the MCM has a heatsink, a thermal plate, and a series of mounting clips and screws which combine to dissipate heat. The heatsinks and thermal plates generate most of the electromagnetic interference (EMI) since they are not attached or grounded to the board. A series of alignment posts extend from the board and are used to individually and slidably mount each of the components to the board. Each thermal plate is grounded to the posts with grounding clips. The clips maintain contact with the thermal plate through wiping elements. Additional pressure is applied to the wiping elements through a post retaining bracket.

7005926, Feb 28, 2006

May 19, 2004

10/848794

James Edward Hughes - Apex NC, US
Rudolf Eugene Rehquate - Raleigh NC, US

International Business Machines Corporation - Armonk NY

H03L 7/07

331 2, 331 46

A cluster of processing systems is provided wherein each processing system is set to operate at a unique operating frequency. Each unique frequency is set to differ from each other by at least a predetermined frequency differential or bandwidth. When clustered, the radiated emissions will not add. Rather, the RF energy is distributed over the predetermined frequency bandwidth and in so doing achieve a reduction of measured RF energy at any singular frequency. By using RF energy dispersal in systems consisting of aggregated processing elements as subsystems, the need for special or additional RF shielding is precluded. Current design and manufacturing techniques can continue to be used. Thus, reducing the overall cost of implementing aggregated systems.

5680397, Oct 21, 1997

Mar 13, 1995

8/402740

Kenneth J. Christensen - Apex NC
Francis E. Noel - Durham NC
Rudolf E. Rehquate - Raleigh NC
Thomas Stammely - Cary NC
Jerry Dagher - Raleigh NC
Beymer Bevill - Fuquay-Varina NC

International Business Machines Corporation - Armonk NY

H04L 1216, H04L 1244

370421

A multi-port LAN switch is provided that enables attached network devices to both communicate directly and to insert into a token-ring network through an attached concentrator. Each port of the multi-port LAN switch has a first transformer, a second transformer, and a switching system. The first transformer has a first winding connected to a first connection of the port. The second transformer has a first winding connected to a second connection of the port. The switching system switches to a port mode or an adapter mode as a function of a mode signal transmitted to the port. In the adapter mode, the switching system connects a second winding of the first transformer to a transmitter circuit in the port, and its connects a second winding of the second transformer to a receiver circuit in the port. In the port mode, the switching system connects the second winding of the first transformer to the receiver circuit in the port, and it connects the second winding of the second transformer to the transmitter circuit in the port. Each port of the multi-port LAN switch further includes a DC voltage source that is switchably connected to the first connection of the port through a first switch.

6278695, Aug 21, 2001

Jun 9, 1997

8/871164

Kenneth J. Christensen - Apex NC
Frances E. Noel - Durham NC
Rudolf E. Rehquate - Raleigh NC
Thomas Stammely - Cary NC
Jerry Dagher - Raleigh NC
Beymer Bevill - Fuquay-Varina NC

International Business Machines Corporation - Armonk NY

H04L 1228, H04L 12403, H04L 1266, H04J 322

370254

A multi-port LAN switch is provided that enables attached network devices to both communicate directly and to insert into a token-ring network through an attached concentrator. Each port of the multi-port LAN switch has a first transformer, a second transformer, and a switching system. The first transformer has a first winding connected to a first connection of the port. The second transformer has a first winding connected to a second connection of the port. The switching system switches to a port mode or an adapter mode as a function of a mode signal transmitted to the port In the adapter mode, the switching system connects a second winding of the first transformer to a transmitter circuit in the port, and its connects a second winding of the second transformer to a receiver circuit in the port. In the port mode, the switching system connects the second winding of the first transformer to the receiver circuit in the port, and it connects the second winding of the second transformer to the transmitter circuit in the port. Each port of the multi-port LAN switch further includes a DC voltage source that is switchably connected to the first connection of the port through a first switch.

8502618, Aug 6, 2013

Dec 12, 2008

12/334050

Edward J. Bodette - Cary NC, US
Michael Crowder - Cary NC, US
Rudolf Rehquate - Raleigh NC, US

International Business Machines Corporation - Armonk NY

H04B 3/30

333 12, 333 171, 333185

The average EMR emissions of an electronic device may be reduced by implementing an electrically-active modulated termination. For example, the impedance may be continuously varied at one or more termination locations between two metal substructures to cause a like variation in the amplitude of each component of the EMR. According to one approach, cyclically varying the electrical impedance with a period of less than the time interval over which the EMR is measured will result in a reduction in the average measured EMR.

2013021, Aug 22, 2013

Mar 21, 2013

13/848275

INTERNATIONAL BUSINESS MACHINES CORPORATION - , US
Michael H. Crowder - Cary NC, US
Rudolf E. Rehquate - Raleigh NC, US
Edward S. Suffern - Chapel Hill NC, US

INTERNATIONAL BUSINESS MACHINES CORPORATION - Armonk NY

H05K 9/00, H01R 43/20

295921

A method of mitigating EMI in an electronic device includes selecting a subset of surface-mount socket connectors on an electronic device to be connected with corresponding working plug connectors and connecting the working plug connectors with the selected subset of socket connectors by inserting the working plug connectors into the selected subset of socket connectors. The method further includes positioning a dummy plug in each of the unselected surface-mount socket connectors, the dummy plug comprising a flexible foam material configured to attenuate electromagnetic radiation by absorption and having a dummy plug profile generally matched to a socket profile of the corresponding socket connector.

8485834, Jul 16, 2013

May 12, 2011

13/106030

Edward J. Bodette - Cary NC, US
Michael H. Crowder - Cary NC, US
Rudolf E. Rehquate - Raleigh NC, US
Edward S. Suffern - Chapel Hill NC, US

International Business Machines Corporation - Armonk NY

H01R 4/58

439 88

A system and method for mitigating EMI in an electronic device rely on a set of foam dummy plugs specially configured for insertion into socket connectors according to connector type. The foam plugs have no electrical terminals or wiring, but are made from a foam composite material that attenuates electromagnetic radiation by absorption. The foam composite material includes a foam matrix and electrically conductive particles impregnated within the foam matrix. A handle may be unitarily formed with the foam plug. The handle may include a stamped through-hole, forming a ring, to facilitate insertion and removal of the dummy plugs by hand.

2007027, Nov 29, 2007

May 29, 2006

11/420775

Edward J. Bodette - Cary NC, US
Michael H. Crowder - Cary NC, US
Rudolf E. Rehquate - Raleigh NC, US
Carl D. Susinno - Raleigh NC, US

International Business Machines Corporation - Armonk NY

H01R 13/625

439341

An isolated signal probe comprises an input module, an output module, and a fiber optic line connecting the input module to the output module. The input module includes external positive and negative terminals, an input translation circuit electrically connected to the external positive and negative terminals, a first power supply for driving the input translation circuit, and an electrical-to-optical converter that receives a first signal from the input translation circuit. The output module includes an optical-to-electrical converter, an output translation circuit for receiving a second signal from the optical-to-electrical converter; a second power source for driving the output translation circuit, and an output connector electrically connected to the output translation circuit. The fiber optic line connects the electrical-to-optical converter to the optical-to-electrical converter.

5649111, Jul 15, 1997

Dec 18, 1995

8/573902

Rudolf Eugene Rehquate - Raleigh NC
Thomas Edward Stammely - Cary NC
Jeffrey Matthew Stoltz - Bristol PA

International Business Machines Corporation - Armonk NY

G06F 300, H04J 302

3952002

A device which attaches multiple workstations, printers, computers or the like to a single lobe of a communications network includes a multistation access unit (MAU) with multiple ports and a voltage generator unit which generates a phantom current to activate a remote switch which allows one or more ports on the MAU to transmit or receive information from the communications network.