James L Marsh

US Patent:

6861587, Mar 1, 2005

Filed:

Mar 15, 2000

Appl. No.:

09/914421

Inventors:

Arjun SelVakumar - Bellaire TX, US
James L. Marsh - San Antonio TX, US
Howard D. Goldberg - Sugar Land TX, US
Duli Yu - Sugar Land TX, US
W. Marc Stalnaker - Sugar Land TX, US

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

H05K005/00

US Classification:

174 521, 206521

Abstract:

A system for resiliently attaching a mass to a package. The system includes a mass, a housing, resilient couplings for resiliently attaching the mass to the housing, bumpers for slidingly supporting the mass, and electrical connections for electrically coupling the mass to the housing.

US Patent:

6871544, Mar 29, 2005

Filed:

Mar 16, 2000

Appl. No.:

09/936640

Inventors:

Arjun Selvakumar - Bellaire TX, US
Howard D. Goldberg - Sugar Land TX, US
Duli Yu - Sugar Land TX, US
Matthew Ip - Austin TX, US
Martin A. Schmidt - Reading MA, US
James L. Marsh - San Antonio TX, US
Philip Simon - Houston TX, US

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

G01P015/00

US Classification:

7351418, 7351423

Abstract:

An accelerometer () for measuring seismic data. The accelerometer () includes an integrated vent hole for use during a vacuum sealing process and a balanced metal pattern for reducing cap wafer bowing. The accelerometer () also includes a top cap press frame recess () and a bottom cap press frame recess () for isolating bonding pressures to specified regions of the accelerometer (). The accelerometer () is vacuum-sealed and includes a balanced metal pattern () to prevent degradation of the performance of the accelerometer (). A dicing process is performed on the accelerometer () to isolate the electrical leads of the accelerometer (). The accelerometer () further includes overshock protection bumpers () and patterned metal electrodes to reduce stiction during the operation of the accelerometer ().

US Patent:

6945110, Sep 20, 2005

Filed:

Jul 21, 2004

Appl. No.:

10/896602

Inventors:

Arjun Selvakumar - Bellaire TX, US
Howard D. Goldberg - Sugar Land TX, US
Duli Yu - Sugar Land TX, US
Matthew Ip - Austin TX, US
Martin A. Schmidt - Reading MA, US
James L. Marsh - San Antonio TX, US
Philip Simon - Houston TX, US

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

G01P015/00
H01L021/76

US Classification:

7351416, 7351424, 438 15

Abstract:

An accelerometer () for measuring seismic data. The accelerometer () includes an integrated vent hole for use during a vacuum sealing process and a balanced metal pattern for reducing cap wafer bowing. The accelerometer () also includes a top cap press frame recess () and a bottom cap press frame recess () for isolating bonding pressures to specified regions of the accelerometer (). The accelerometer () is vacuum-sealed and includes a balanced metal pattern () to prevent degradation of the performance of the accelerometer (). A dicing process is performed on the accelerometer () to isolate the electrical leads of the accelerometer (). The accelerometer () further includes overshock protection bumpers () and patterned metal electrodes to reduce stiction during the operation of the accelerometer ().

US Patent:

7152473, Dec 26, 2006

Filed:

Mar 17, 2000

Appl. No.:

09/936634

Inventors:

Larry Rushefsky - Sugar Land TX, US
Axel Sigmar - Lago Vista TX, US
Howard D. Goldberg - Sugar Land TX, US
W. Marc Stalnaker - Sugar Land TX, US
Ray Rinne - Raleigh NC, US
Demetrios Balderes - Poughkeepsie NY, US
Guido Lemke - Hopewell Jct NY, US
Matthew Ip - Austin TX, US
Lawrence P. Behn - Houston TX, US
Klaus Domagalski - Katy TX, US
Lianzhong Yu - Redmond WA, US
Arjun Selvakumar - Bellaire TX, US
Duli Yu - Sugar Land TX, US
James L. Marsh - San Antonio TX, US
Peter Maxwell - Missouri City TX, US
David Morgan - Parker TX, US
Thomas Buie - Richardson TX, US
Kees Faber - Voorhour, NL
Sjoerd Altman - Zoetermeer, NL
Richard Laroo - Lisse, NL

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

G01D 11/10
G01P 15/00

US Classification:

7351416, 73431

Abstract:

A sensor apparatus () includes a plural different spatial direction axis of sensitivity positioned sensor package containing sensor module () supported by a planar surface () within a cavity () of a housing () coupled to a first end cap () by a PC-board connection (). Housing () is further coupled to first end cap () by a first coupling member () and a second coupling member () and is also coupled to an opposite second end cap () by a third coupling member () and a fourth coupling member (). Interface sealing members () seal between housing () and first end cap (). Interface sealing members () seal between housing () and second end cap ().

US Patent:

7274079, Sep 25, 2007

Filed:

Aug 22, 2005

Appl. No.:

11/209164

Inventors:

Arjun Selvakumar - Bellaire TX, US
Howard D. Goldberg - Sugar Land TX, US
Duli Yu - Sugar Land TX, US
Matthew Ip - Austin TX, US
Martin A. Schmidt - Reading MA, US
James L. Marsh - San Antonio TX, US
Philip Simon - Houston TX, US

Assignee:

Input/Output, Inc. - Houston TX

International Classification:

H01L 29/84
H01L 21/00

US Classification:

257415, 438 48

Abstract:

An accelerometer () for measuring seismic data. The accelerometer () includes an integrated vent hole for use during a vacuum sealing process and a balanced metal pattern for reducing cap wafer bowing. The accelerometer () also includes a top cap press frame recess () and a bottom cap press frame recess () for isolating bonding pressures to specified regions of the accelerometer (). The accelerometer () is vacuum-sealed and includes a balanced metal pattern () to prevent degradation of the performance of the accelerometer (). A dicing process is performed on the accelerometer () to isolate the electrical leads of the accelerometer (). The accelerometer () further includes overshock protection bumpers () and patterned metal electrodes to reduce stiction during the operation of the accelerometer ().

US Patent:

7317266, Jan 8, 2008

Filed:

Mar 9, 2005

Appl. No.:

11/075537

Inventors:

Bruce Beakley - Houston TX, US
James J. Marsh - Friendswood TX, US
Robert T. Shaul - LaPorte TX, US
Brian L. Juhasz - Friendswood TX, US

Assignee:

Parker-Hannifin Corporation - Cleveland OH

International Classification:

H02K 41/00

US Classification:

310 12, 310 13

Abstract:

The present invention provides a method for reducing cogging in a linear motor and for mounting sensors to determine motion of the motor.