Patents by Inventor John R. Dunham
John R. Dunham has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8920195Abstract: An electrical connector provides shielded signal pathways. The electrical connector includes a shield plate, a first finger that extends from an edge of the shield plate, and a second finger that extends from the edged of the shield and that is adjacent to the first finger. A channel is formed between the first finger and the second finger. A coupling is placed within the channel adjacent the first finger. The coupling includes a contact, a first connecting arm extending from a first end of the contact to a first portion of the first finger, and a second connecting arm extending from a second end of the contact to a second portion of the first finger. The first connecting arm and the second connecting arm provide at least two current paths from the contact to the first finger.Type: GrantFiled: October 22, 2012Date of Patent: December 30, 2014Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Brian Peter Kirk, John R. Dunham
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Patent number: 8298015Abstract: An electrical connector provides shielded signal pathways. The electrical connector includes a shield plate, a first finger that extends from an edge of the shield plate, and a second finger that extends from the edged of the shield and that is adjacent to the first finger. A channel is formed between the first finger and the second finger. A coupling is placed within the channel adjacent the first finger. The coupling includes a contact, a first connecting arm extending from a first end of the contact to a first portion of the first finger, and a second connecting arm extending from a second end of the contact to a second portion of the first finger. The first connecting arm and the second connecting arm provide at least two current paths from the contact to the first finger.Type: GrantFiled: October 10, 2008Date of Patent: October 30, 2012Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Brian P. Kirk, John R. Dunham
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Patent number: 8202118Abstract: A differential connector has a plurality of rows. Each row includes a plurality of signal conductors provided as differential pairs. Each signal conductor has a first contact end connectable to a printed circuit board, a second contact end, and an intermediate portion having a first width. For each differential pair, one first contact end lies along a first line parallel to the plurality of rows and the other first contact end lies along a second line parallel to and spaced from the first line. The differential connector further includes a plurality of ground conductors, with each ground conductor corresponding to a differential pair. Each ground conductor has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion having a second width that is at least twice the first width.Type: GrantFiled: September 27, 2010Date of Patent: June 19, 2012Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Mark W. Gailus, John R. Dunham
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Publication number: 20110130038Abstract: A differential connector has a plurality of rows. Each row includes a plurality of signal conductors provided as differential pairs. Each signal conductor has a first contact end connectable to a printed circuit board, a second contact end, and an intermediate portion having a first width. For each differential pair, one first contact end lies along a first line parallel to the plurality of rows and the other first contact end lies along a second line parallel to and spaced from the first line. The differential connector further includes a plurality of ground conductors, with each ground conductor corresponding to a differential pair. Each ground conductor has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion having a second width that is at least twice the first width.Type: ApplicationFiled: September 27, 2010Publication date: June 2, 2011Inventors: Thomas S. Cohen, Mark W. Gailus, John R. Dunham
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Patent number: 7811130Abstract: A differential connector has a plurality of rows. Each row includes a plurality of signal conductors provided as differential pairs. Each signal conductor has a first contact end connectable to a printed circuit board, a second contact end, and an intermediate portion having a first width. For each differential pair, one first contact end lies along a first line parallel to the plurality of rows and the other first contact end lies along a second line parallel to and spaced from the first line. The differential connector further includes a plurality of ground conductors, with each ground conductor corresponding to a differential pair. Each ground conductor has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion having a second width that is at least twice the first width.Type: GrantFiled: June 3, 2009Date of Patent: October 12, 2010Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Mark W. Gailus, John R. Dunham
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Publication number: 20100093216Abstract: An electrical connector provides shielded signal pathways. The electrical connector includes a shield plate, a first finger that extends from an edge of the shield plate, and a second finger that extends from the edged of the shield and that is adjacent to the first finger. A channel is formed between the first finger and the second finger. A coupling is placed within the channel adjacent the first finger. The coupling includes a contact, a first connecting arm extending from a first end of the contact to a first portion of the first finger, and a second connecting arm extending from a second end of the contact to a second portion of the first finger. The first connecting arm and the second connecting arm provide at least two current paths from the contact to the first finger.Type: ApplicationFiled: October 10, 2008Publication date: April 15, 2010Applicant: AMPHENOL CORPORATIONInventors: Thomas S. COHEN, Brian P. Kirk, John R. Dunham
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Patent number: 7544096Abstract: A differential connector has a plurality of rows. Each row includes a plurality of signal conductors provided as differential pairs. Each signal conductor has a first contact end connectable to a printed circuit board, a second contact end, and an intermediate portion having a first width. For each differential pair, one first contact end lies along a first line parallel to the plurality of rows and the other first contact end lies along a second line parallel to and spaced from the first line. The differential connector further includes a plurality of ground conductors, with each ground conductor corresponding to a differential pair. Each ground conductor has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion having a second width that is at least twice the first width.Type: GrantFiled: September 24, 2007Date of Patent: June 9, 2009Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Mark W. Gallus, John R. Dunham
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Patent number: 7278886Abstract: A differential connector has a plurality of rows. Each row includes a plurality of signal conductors provided as differential pairs. Each signal conductor has a first contact end connectable to a printed circuit board, a second contact end, and an intermediate portion having a first width. For each differential pair, one first contact end lies along a first line parallel to the plurality of rows and the other first contact end lies along a second line parallel to and spaced from the first line. The differential connector further includes a plurality of ground conductors, with each ground conductor corresponding to a differential pair. Each ground conductor has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion having a second width that is at least twice the first width.Type: GrantFiled: August 14, 2006Date of Patent: October 9, 2007Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Mark W. Gailus, John R. Dunham
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Patent number: 7094102Abstract: A differential connector has a plurality of rows. Each row includes a plurality of signal conductors provided as differential pairs. Each signal conductor has a first contact end connectable to a printed circuit board, a second contact end, and an intermediate portion having a first width. For each differential pair, one first contact end lies along a first line parallel to the plurality of rows and the other first contact end lies along a second line parallel to and spaced from the first line. The differential connector further includes a plurality of ground conductors, with each ground conductor corresponding to a differential pair. Each ground conductor has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion having a second width that is at least twice the first width.Type: GrantFiled: July 1, 2005Date of Patent: August 22, 2006Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Mark W. Gallus, John R. Dunham
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Patent number: 7074086Abstract: In one embodiment of the invention, there is disclosed an electrical connector connectable to a printed circuit board, the electrical connector having an insulative housing including side walls and a base. The electrical connector also includes signal conductors and ground conductors. Each of the signal conductors and ground conductors has a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion therebetween that is disposed in the base of the insulative housing. The signal conductors and the ground conductors are arranged in a plurality of rows, with each row having signal conductors and ground conductors. For each of the plurality of rows, there is a corresponding ground strip positioned adjacent thereto disposed in the base of the insulative housing. And the ground strip is electrically connected to the ground conductors of the row.Type: GrantFiled: September 3, 2003Date of Patent: July 11, 2006Assignee: Amphenol CorporationInventors: Thomas S. Cohen, Marc B. Cartier, John R. Dunham, Jason J. Payne
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Patent number: 6872085Abstract: There is disclosed an electrical connector assembly having a first electrical connector mateable to a second electrical connector. In one embodiment, the first electrical connector includes a plurality of wafers, with each wafer having an insulative housing, a plurality of signal conductors and a shield plate. A portion of the shield plate is exposed so that a conductive member can electrically connect the shield plates of the wafers at the exposed portion of the shield plate. In one embodiment, the second electrical connector includes an insulative housing, and a plurality of signal conductors and ground conductors in a plurality of rows. Each row corresponds to a wafer of the first electrical connector. Each signal conductor has a contact tail and each ground conductors has two contact tails.Type: GrantFiled: September 30, 2003Date of Patent: March 29, 2005Assignee: Teradyne, Inc.Inventors: Thomas S. Cohen, Marc B. Cartier, John R. Dunham, Jason J. Payne
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Publication number: 20040259419Abstract: A shielded electrical connector in which multi-beam contacts are used to improve performance of the connector. The beams are positioned to create multiple current paths through a shield member, thereby increasing the effectiveness of the shield. These contacts are used in a connector that has individual shield strips running in parallel with signal conductors. Multiple contact tails are also used to create multiple current paths. Projections from the shield strips shield adjacent signal contacts and the contact portions are positioned to increase current flow through the projections. Structures to allow beam-type contacts to be formed in a small space are also disclosed. The contact structure also reduces the impedance of the ground path.Type: ApplicationFiled: June 18, 2003Publication date: December 23, 2004Inventors: Jason J. Payne, Thomas S. Cohen, John R. Dunham, Mark W. Gailus, Philip T. Stokoe
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Patent number: 6827611Abstract: A shielded electrical connector in which multi-beam contacts are used to improve performance of the connector. The beams are positioned to create multiple current paths through a shield member, thereby increasing the effectiveness of the shield. These contacts are used in a connector that has individual shield strips running in parallel with signal conductors. Multiple contact tails are also used to create multiple current paths. Projections from the shield strips shield adjacent signal contacts and the contact portions are positioned to increase current flow through the projections. Structures to allow beam-type contacts to be formed in a small space are also disclosed. The contact structure also reduces the impedance of the ground path.Type: GrantFiled: June 18, 2003Date of Patent: December 7, 2004Assignee: Teradyne, Inc.Inventors: Jason J. Payne, Thomas S. Cohen, John R. Dunham, Mark W. Gailus, Philip T. Stokoe