David K Lyle

US Patent:

8308818, Nov 13, 2012

Filed:

Oct 18, 2010

Appl. No.:

12/925233

Inventors:

David Kevin Lyle - The Woodlands TX, US

International Classification:

A61F 2/62
A61F 2/66

US Classification:

623 38, 623 47

Abstract:

An ankle joint prosthesis comprised of a central core element capable of attachment to an artificial leg, coupled to two side elements capable for attachment to an artificial foot. The medial and lateral side elements envelop the central core element lower region along a common central axis, and are coupled together by a mechanical fastening mechanism and can be rotated relative to the central core element and positively constrained to align in various orientations dependent of a specific grooved profile within each side element pair. The ankle joint orientation is affected by engaging an anterior and/or posterior located mechanical linkage enacting an upward linear movement on a guide pin plunger, thus allowing the side elements to rotate by a torque force from a torsion spring until reaching orientation held in place along a grooved profile. The load bearing elements shall be precision machined from Grade 5 Titanium.

US Patent:

8618803, Dec 31, 2013

Filed:

Apr 13, 2010

Appl. No.:

13/378515

Inventors:

Paul F. Rodney - Spring TX, US
David Lyle - Houston TX, US
Mac Upshall - Edmonton, CA
Richard Thomas Hay - Spring TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

G01V 3/26

US Classification:

324326, 324356, 324346

Abstract:

In some embodiments, apparatus and systems, as well as methods, may operate to launch a set of currents into a corresponding set of existing well casings; monitor, in a well under construction, changes in at least one of a magnetic field or an electric field perturbed by the set of currents after each one of the set is launched; and determine a location of the well under construction in relation to the set of existing well casings. In some embodiments, the activities include inducing current into a drillstring located in a well under construction; monitoring, at a set of existing well casings, changes in at least one of a magnetic field or an electric field perturbed by the current after the current is induced; and determining a location of the well under construction in relation to the set of existing well casings. Additional apparatus, systems, and methods are disclosed.

US Patent:

20150315906, Nov 5, 2015

Filed:

Dec 28, 2012

Appl. No.:

14/443940

Inventors:

- Houston TX, US
David Lyle - Houston TX, US

International Classification:

E21B 47/16

Abstract:

A downhole electromagnetic telemetry system and method whereby electrically insulating material is placed above and/or below an electrical current launching device or receiver along a well string in order to extend the range of the telemetry system, increase the telemetry rate, and/or reduce downhole power requirements.