David James Briggs

US Patent:

20120175143, Jul 12, 2012

Filed:

Jan 12, 2011

Appl. No.:

13/005313

Inventors:

John W. Dillman - Newberg OR, US
Garrett L. Headrick - Newberg OR, US
David M. Briggs - Newberg OR, US
Timothy S. Clements - McMinnville OR, US
Darren P. Weidman - Portland OR, US
Dominic M. Bertram - Beaverton OR, US

Assignee:

CLIMAX PORTABLE MACHINE TOOLS INC. - Newberg OR

International Classification:

E21B 3/00

US Classification:

173213

Abstract:

Various embodiments herein provide a remotely adjustable feed system for remotely controlling the movement of a tool head on a machining tool along an axis of motion by means of converting reciprocal linear motion, i.e., back and forth linear motion, into rotary motion. The rate of movement of the tool head along the axis of motion may be controlled by varying the distance of linear motion in each cycle of linear reciprocal motion and/or by varying the rate of linear reciprocal motion cycles per unit time. Alternatively, or in addition, the rate of movement of the tool head along the axis of motion may be controlled by varying the amount of rotary motion that results from a given amount of reciprocal linear motion. Additionally, in some embodiments, the movement of the tool head may be controlled by directly controlling the rotary motion that drives the tool head along the axis of motion. The rotary motion may be controlled by adjusting the speed of continuous rotation and/or adjusting the frequency of pulsed rotations.

US Patent:

20130160292, Jun 27, 2013

Filed:

Dec 27, 2011

Appl. No.:

13/337502

Inventors:

Keith Richard Davis - Aloha OR, US
David Loyd Sorensen - Sherwood OR, US
John Winfrey Dillman - Newberg OR, US
John Rogers Brooks - Portland OR, US
Hitesh K. Patel - Tigard OR, US
David Michael Briggs - Carlton OR, US
Garrett Lindon Headrick - Newberg OR, US
Andrew Gordon Thompson - Hendersonville NC, US
David Ethan Ross - Tigard OR, US
Jeremy Carl Conser - Aloha OR, US

Assignee:

Climax Portable Machine Tools, Inc. - Newberg OR

International Classification:

B23P 15/04
B23P 23/00

US Classification:

298892, 29 2351

Abstract:

Machine tools and methods for machining turbine rotor assemblies are disclosed. Some machine tools include a drill arm that pushes off of a turbine stage that is adjacent to a turbine stage to be machined. Some machine tools include a clamping arm that secures the machine tool to a turbine stage to be machined and an adjacent turbine stage. Some methods include pushing-off of a turbine stage that is adjacent to a turbine stage to be machined. Some methods include securing a machine tool to a turbine stage that is adjacent to a turbine stage to be machined. Some methods include monitoring at least one of a current delivered to a first motor and a voltage applied to the first motor and controlling a second motor in response to the monitoring. Some methods include sequentially machining a turbine stage with cutting tools having increasing lengths and/or diameters.

US Patent:

20170146425, May 25, 2017

Filed:

Sep 9, 2016

Appl. No.:

15/260850

Inventors:

- Newberg OR, US
David Loyd Sorensen - Sherwood OR, US
Joseba Brit Elola - Portland OR, US
Karl Boyd Williams - Beaverton OR, US
Brady Lynn Byers - Newberg OR, US
David Michael Briggs - Carlton OR, US

International Classification:

G01M 3/28
F16L 23/02

Abstract:

Test flange assemblies comprise a flange body and a piston. The piston is configured to translate relative to the flange body and has an outer surface facing away from the flange body and an inner surface facing toward the flange body. The outer surface defines a circular seal channel for receiving a seal structure between the piston and a flange surface of a flanged component. The outer surface radially inward from the circular seal channel has a surface area that is less than a surface area of the inner surface. Methods of testing pressure containing structures comprise operatively positioning the test flange assembly, positioning a seal structure within the circular seal channel of the piston, coupling the flange body to a flanged component, and pressurizing a volume between the piston and the flange body so that the piston compresses the seal structure between the piston and the flanged component.