James R Garrett

Address:

11914 Leaf Oak Dr, Houston, TX 77065

VIN:

1GTHC29D47E155756

Make:

GMC

Model:

SIERRA 2500HD CLASSIC

Year:

2007

US Patent:

7293607, Nov 13, 2007

Filed:

Jul 13, 2005

Appl. No.:

11/180254

Inventors:

Jeff A. Lambert - Conroe TX, US
James C. Garrett - Kingwood TX, US
Kenneth L. Cambern - Pampa TX, US
Joel M. Ferland - Pampa TX, US
Jay D. Furnish - Pampa TX, US
Donald W. Johnson - Pampa TX, US
Michael R. Zemanek - Pampa TX, US
James R. Cirone - Pampa TX, US
Calvin Blankenship - Lindsay OK, US

Assignee:

National-Oilwell, L.P. - Houston TX

International Classification:

E21B 19/00

US Classification:

166 7511, 166 851, 414540

Abstract:

A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated “pinning” system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.

US Patent:

7505871, Mar 17, 2009

Filed:

Jul 5, 2007

Appl. No.:

11/825318

Inventors:

James Simspon Grant - Houston TX, US
Randy Lee Scates - LaMarque TX, US
James Cavitt Garrett - Kingwood TX, US
Jeff A Lambert - Conroe TX, US
Marco Antonio Calzada - Angleton TX, US

Assignee:

Varco I/P, Inc. - Houston TX

International Classification:

G06F 19/00
G06F 17/40

US Classification:

702185, 166 66, 340500, 340679, 702 33, 702 34, 702 35, 702113, 702182, 702183, 702187, 702189

Abstract:

Systems and methods for diagnosing faults in well servicing operations and determining appropriate remedial action to remedy such faults.

US Patent:

7546869, Jun 16, 2009

Filed:

Nov 12, 2007

Appl. No.:

11/938676

Inventors:

Jeff A. Lambert - Conroe TX, US
James C. Garrett - Kingwood TX, US
Kenneth L. Cambern - Pampa TX, US
Joel M. Ferland - Pampa TX, US
Jay D. Furnish - Pampa TX, US
Donald W. Johnson - Pampa TX, US
Michael R. Zemanek - Pampa TX, US
James R. Cirone - Pampa TX, US
Calvin Blankenship - Lindsay OK, US

Assignee:

National-Oilwell, L.P. - Houston TX

International Classification:

E21B 19/00

US Classification:

166 7511, 166 851, 414540

Abstract:

A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated “pinning” system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.

US Patent:

8006751, Aug 30, 2011

Filed:

Oct 8, 2007

Appl. No.:

11/973491

Inventors:

Jeff A. Lambert - Conroe TX, US
James C. Garrett - Kingwood TX, US
Kenneth L. Cambern - Pampa TX, US
Joel M. Ferland - Pampa TX, US
Jay D. Furnish - Pampa TX, US
Donald W. Johnson - Pampa TX, US
Michael R. Zemanek - Pampa TX, US
James R. Cirone - Pampa TX, US
Calvin R. Blankenship - Lindsay OK, US

Assignee:

National-Oilwell, L.P. - Houston TX

International Classification:

E21B 19/00

US Classification:

166 7511, 166 851, 414540

Abstract:

A method and apparatus for positioning and supporting the work platform of a mobile workover rig is disclosed. The work platform of the preferred embodiment of the present invention utilizes a unique support structure and automated positioning system for positioning the work platform at the desired height above the wellhead equipment. The preferred embodiment of the present invention utilizes a specialized automated “pinning” system that secures the work platform at the desired height. Additionally, the present invention utilizes one or more support cylinders to position and support the work platform in the horizontal position over the wellhead equipment. The automated positioning and pinning system of the present invention is a unique system that significantly reduces the time required to position the work platform of a mobile workover rig in the operating position, as well as significantly reduces the risk of injury to rig personnel assisting in the positioning operations.

US Patent:

55348890, Jul 9, 1996

Filed:

Sep 10, 1993

Appl. No.:

8/119422

Inventors:

Daniel B. Reents - Spring TX
Patrick R. Cooper - Houston TX
James H. Garrett - Spring TX
Philip J. McKenzie - Houston TX

Assignee:

Compaq Computer Corporation - Houston TX

International Classification:

G09G 500

US Classification:

345132

Abstract:

A liquid crystal display (LCD) panel which has its contrast controlled through the use of a pulse width modulation (PWM) circuit contained in the video controller and a contrast control circuit. In response to a particular video refresh mode, the PWM circuit modulates the pulse width of a signal that is an input to the contrast control circuit. The pulse width is changed by the use of a base contrast register and two offset registers. Depending on the video mode, the base register is used alone or is combined with one of the offset registers to provide a signal to indicate the duty cycle of the signal. The pulse width modulated signal is converted to a DC bias contrast voltage which is provided to the LCD panel.

US Patent:

51422476, Aug 25, 1992

Filed:

Aug 6, 1991

Appl. No.:

7/741083

Inventors:

Henry F. Lada - Houston TX
Hung Q. Le - Houston TX
James H. Garrett - Spring TX
John M. Gromala - Houston TX

Assignee:

Compaq Computer Corporation - Houston TX

International Classification:

H03L 7099
H03L 718

US Classification:

331 14

Abstract:

A phase-locked loop (PLL) clock generator circuit which is capable of changing the frequency of its outpt clock signal in a stable fashion. Selection of the frequency of the output clock signal is made by way of a selectable frequency divider coupled between the reference clock signal and an input of the PLL, with another frequency divider in the feedback loop of the PLL; each of these frequency dividers are selectable according to a signal on a select bus, translated by way of a ROM look-up table. The circuit also includes a multiplexer having a first input coupled to the PLL output, and a second input coupled to a stable clock signal, for example to the referenc clock signal or to the output of a fixed frequency PLL. The conrol input of the multiplexer is controlled by a state machine which monitors the select bus. Responsive to detection of a transition of the select bus, indicating a new frequency, the state machine issues a pulse to the control input of the multiplexer to cause it to select the stable clock signal for sufficient time to allow the PLL to acquire and lock onto the new frequency, after which the multiplexer again selects the PLL output as the output clock signal.

US Patent:

52453286, Sep 14, 1993

Filed:

Oct 15, 1990

Appl. No.:

7/597814

Inventors:

James H. Garrett - Spring TX

Assignee:

Compaq Computer Corporation - Houston TX

International Classification:

G09G 300

US Classification:

345149

Abstract:

A method and apparatus are disclosed which provide a means for both spatially and temporarily resolving the on/off states of a two-state display device such as a liquid crystal display to provide apparent shades of gray. A particular feature of this method is that the cycling between on and off states is not performed in a single, repetitive pattern. Rather, a pattern is utilized which repeats only after many cycles. Additionally, when the 10 method disclosed herein is utilized, adjacent pixels, when selected to display the same shade of gray, do not cycle on and off in synchronization, but rather utilize out-of-phase cycling patterns. This spatial resolution reduces perceived flicker in the display and provides a more stable image. In one embodiment, sixteen shades of gray are provided. The shades are generated by cycling individual pixels such that when averaged over time, the duty cycles of such cycling are 0, 1/9, 1/7, 1/5, 2/7, 1/3, 2/5, 7/15, 8/15, 3/5, 2/3, 5/7, 4/5, 6/7, 8/9 and 1.

US Patent:

50686496, Nov 26, 1991

Filed:

Oct 14, 1988

Appl. No.:

7/258269

Inventors:

James H. Garrett - Spring TX

Assignee:

Compaq Computer Corporation - Houston TX

International Classification:

G09G 318

US Classification:

340793

Abstract:

A method and apparatus are disclosed which provide a means for both spatially and temporally resolving the on/off states of a two-state display device such as a liquid cystal display to provide apparent shades of gray. A particular feature of this method is that the cycling between on and off states is not performed in a discernible pattern. Rather, a pseudo-random pattern is utilized which repeats only after many cycles. Additionally, when the method disclosed herein is utilized, adjacent pixels, when selected to display the same shade of gray, do not cycle on and off in synchronization, but rather utilize out-of-phase cycling patterns. This spatial resolution reduces perceived flicker in the display and provides a more stable image. In one embodiment, eight shades of gray are provided. The shades are generated by cycling individual pixels such that when averaged over time, they are: always off; on 20% of the time; 33% of the time; 40% of the time; 60% of the time; 67% of the time; 80% of the time; or, on at all times.