David Michael Mccall

US Patent:

6470997, Oct 29, 2002

Filed:

May 2, 2001

Appl. No.:

09/847458

Inventors:

David McCall - Richmond TX
Algernon S. Badger - East Bernard TX

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

G01V 104

US Classification:

181107, 181120, 367144

Abstract:

The invention describes an air gun for use in a marine seismic system. The air gun includes a gun body and shuttle that define a chamber containing a compressed supply of gas. The air gun is further designed to release the compressed gas so that the release time or gun fire time is monitored with sufficient accuracy. The fire time is measured by a timing coil that determines the location of the air gun shuttle by sensing a magnet disposed on the shuttle. The timing coil is designed to eliminate interference caused by magnetic flux generated by the actuation of an air gun solenoid valve.

US Patent:

6570820, May 27, 2003

Filed:

Jun 18, 2001

Appl. No.:

09/883871

Inventors:

Navin Patel - Friendswood TX
David McCall - Richmond TX

Assignee:

Input/Output, Inc. - Stafford TX

International Classification:

F16K 1100

US Classification:

367144

Abstract:

The present invention provides a pressure-balanced inertial valve assembly for use in marine seismic energy sources such as air guns. The valve includes a poppet having a first seal and a second seal. A pressure chamber containing a fluid under pressure communicating with the first and second seals to substantially balance the pressure across the seals. An inertial mass is coupled to the poppet. A coil assembly is disposed about the inertial mass. A central guide pin provides guided movement for axial translation.

US Patent:

7042803, May 9, 2006

Filed:

Feb 8, 2002

Appl. No.:

10/071105

Inventors:

Shyam Kutty - Stafford TX, US
David McCall - Alvin TX, US

Assignee:

Input/Output Inc. - Stafford TX

International Classification:

G10K 11/00
G01V 1/38

US Classification:

367153, 367 15, 367141, 367144, 367154, 181110, 181118

Abstract:

A marine acoustic source system has relativley densely packed energy sources arrayed in a tandem-like fashion along a horizontal plane. Preferably, a longitudinal axis of each source lies orthogonal to a pre-determined towing direction. The system includes protective tubes that encloses supply lines and auxiliary equipment, and a harness. The harness provides the primary mechanical connection for towing the sources through the water. To minimize bending of the supply lines, connectors having angular portions connect the sources to the supply lines. Further, the sources can be arranged such that source connection interfaces for receiving power, hydraulic fluid, or data point alternately in opposing directions. During use, the sources, e. g. , air guns, are supported at a predetermined depth beneath the water's surface by a floatation buoy.

US Patent:

7934304, May 3, 2011

Filed:

Oct 2, 2007

Appl. No.:

11/866126

Inventors:

David McCall - Richmond TX, US
Bruce Reichert - Rosharon TX, US

Assignee:

Tenaris Coiled Tubes, LLC - Houston TX

International Classification:

B21C 37/06
B21D 39/00
B23P 25/00
F16L 9/00

US Classification:

2940705, 29458, 29507, 29508, 2952514, 723662, 72368, 138145, 138151, 138171, 219643, 228 175

Abstract:

A method to manufacture tubing includes co-forming a base material strip and a liner material strip into a string of internally-lined tubing and joining edges of the base material strip to form a seam therebetween.

US Patent:

20130312862, Nov 28, 2013

Filed:

Apr 19, 2011

Appl. No.:

13/994575

Inventors:

Mark Douglas Kalman - Luthersville GA, US
Liang Yu - Katy TX, US
Duane Glenn Moosberg - Wilmington DE, US
David Michael McCall - Rosenberg TX, US
Michael Alan Seymour - Katy TX, US

Assignee:

DEEPFLEX INC. - Houston TX

International Classification:

F16L 11/08
B32B 38/00

US Classification:

138125, 156187, 156 60

Abstract:

In one aspect, the present disclosure relates to a method to manufacture an armor layer of a spoolable pipe. The method includes forming one or more laminates and wrapping the one or more laminates onto an underlying layer of the pipe. At least one of the laminates is composed of at least one reinforcement tape and at least one fabric tape. The laminates may be bonded to an adjacent laminate, thereby forming a reinforcement stack. In another aspect, the present disclosure relates to a method to manufacture an armor layer of a spoolable pipe. The method includes providing a plurality of reinforcement tapes having fibers oriented in a first direction and disposing at least one fabric tape between at least two layers of the plurality of reinforcement tapes. The fibers of the at least one fabric tape may be oriented in at least a second direction.

US Patent:

58257209, Oct 20, 1998

Filed:

Oct 22, 1997

Appl. No.:

8/955827

Inventors:

Earnest R. Harrison - Houston TX
David M. McCall - Richmond TX

Assignee:

Input/Output, Inc. - Strafford TX

International Classification:

H04R 2300

US Classification:

367144

Abstract:

A wear ring assembly for an air gun includes a support ring having a receiving recess of a first length formed in a surface of an end of the support ring. An elastic ring is adjacent an end of the receiving recess. A wear ring seats in the receiving recess and is of a second length, greater than the first length, such that a portion of the wear ring overlaps the end of the support ring, thereby covering and deforming the elastic ring. The wear ring is formed of a thin, low-friction, wear-resistant plastic material having dimensions such that the wear ring does not plastically yield during installation into the receiving recess. Installation is accomplished by attaching a core tool adjacent the seal groove. The wear ring is installed with an expanding pusher tool, over the core tool and into the receiving recess.

US Patent:

20140312612, Oct 23, 2014

Filed:

Nov 16, 2011

Appl. No.:

14/357410

Inventors:

Alok Dhagat - Katy TX, US
David Michael McCall - Richmond TX, US

Assignee:

DEEPFLEX INC. - Houston TX

International Classification:

F16L 33/01
B23P 19/00
F16L 13/14

US Classification:

285245, 29890144, 29505, 29506, 29515

Abstract:

The present disclosure relates to an end fitting and method to install the end fitting to a flexible pipe. The method includes disposing a shell mandrel at a free end of the flexible pipe external to a jacket of the flexible pipe and performing a cutback of layers of the flexible pipe to expose an internal pressure sheath of the flexible pipe. An armor layer of the flexible pipe is radially outward from an axial direction of the flexible pipe. At least one internal pressure containment transition component and at least one internal pressure sheath seal are installed on the exposed free end of the flexible pipe. The end fitting is assembled such that the at least one internal pressure containment transition component and at least one seal are assembled with non-radial fasteners having a backward facing direction.

US Patent:

20140290784, Oct 2, 2014

Filed:

May 9, 2012

Appl. No.:

14/114532

Inventors:

David Michael McCall - Rosenberg TX, US

Assignee:

DeepFlex Inc. - Houston TX

International Classification:

F16L 9/14
B32B 3/30
B32B 7/04
B32B 3/28

US Classification:

138151, 294071, 428174, 428161

Abstract:

In one aspect, the present disclosure relates to a reinforcement stack of a spoolable pipe composed of a plurality of laminates stacked to form the reinforcement stack. At least one of the plurality of laminates includes an alignment feature configured to align adjacently stacked laminates. In another aspect, the present disclosure relates to a method to manufacture a reinforcement stack of a spoolable pipe. The method includes providing an alignment feature on at least one laminate of a plurality of laminates and arranging the plurality of laminates using the alignment feature to form the reinforcement stack. In another aspect, the present disclosure relates to an armor layer of an unbonded flexible pipe. The armor layer includes a plurality of laminates stacked to form a reinforcement stack of the armor layer in which each laminate of the plurality of laminates comprises an alignment feature to align adjacent laminates.