Dennis R Mathis

US Patent:

7755761, Jul 13, 2010

Filed:

Nov 12, 2004

Appl. No.:

10/987826

Inventors:

Dennis R. Mathis - Tulsa OK, US
Theodore K. Vogt - Claremore OK, US
Patrick N. Shay - Tulsa OK, US
Dana B. Jackson - Broken Arrow OK, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

G01B 11/00

US Classification:

356399, 356614, 356615, 700160, 2505993

Abstract:

A self-normalizing contour surface drilling apparatus drills holes into contour surfaces with the drill bit of the apparatus oriented normally to the contour surface. The apparatus first determines a location of a hole to be drilled and the orientation of the drill bit relative to the surface at the hole location, and adjusts the position of the drill bit so that the drill bit is positioned normally to the hole location. The apparatus then drills the hole at the location, and then repeats the process seeking out the next location for a drilled hole.

US Patent:

8167518, May 1, 2012

Filed:

Apr 11, 2008

Appl. No.:

12/101619

Inventors:

Dennis Mathis - Saint Peters MO, US
Mike Matlack - Saint Charles MO, US
Scott Anthony Martin - Swansea IL, US
David L. Fritsche - Foristell MO, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

B23B 47/18
B23B 35/00

US Classification:

408 1R, 408138, 408141, 408702

Abstract:

A method and apparatus for a power feed drill. The power feed drill comprises a servo motor, a roller screw, a ball spline shaft, an air motor, and a collet chuck. The roller screw is rotatably mounted to the servo motor. The ball spline shaft has a first end connected to the roller screw, wherein rotation of the roller screw in a first direction moves the ball spline shaft in the first direction and wherein rotation of the roller screw in a second direction moves the ball spline shaft in an opposite direction to the first direction along an axis. The air motor is capable of transmitting rotation motion to the ball spline shaft to rotate around the axis. The collet chuck is fixably attached to a second end of the ball spline shaft, wherein the collet chuck is adapted to receive a tool.

US Patent:

7261499, Aug 28, 2007

Filed:

Nov 11, 2004

Appl. No.:

10/986238

Inventors:

Dennis R. Mathis - Tulsa OK, US
Theodore K. Vogt - Claremore OK, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

B23B 51/08
B23B 49/00

US Classification:

408202, 408 67, 408 95, 408241 S

Abstract:

An adjustable drill microstop apparatus is employed with a drill and a drill bit to limit the depth of a hole drilled into an object surface by the drill bit. The apparatus has a housing and a nose piece that is mounted for reciprocating axial movement in accordance with a plurality of user selectable depths of cut. The nose piece projects from one end of the housing and is positioned adjacent the object surface to receive the drilled hole. The nose piece has an opening into which the drill bit is inserted, and an engagement surface that engages with the object surface during the drilling operation. During the drilling operation, the drill pushes the nose piece into the housing as the drill bit performs the drilling operation. A pre-selected distance that the nose piece reciprocates in the housing limits the depth of the hole drilled by the drill bit into the object surface.

US Patent:

20020051008, May 2, 2002

Filed:

Aug 23, 2001

Appl. No.:

09/938054

Inventors:

Dennis Mathis - Tulsa OK, US
Dana Jackson - Broken Arrow OK, US

Assignee:

The Boeing Company

International Classification:

G06F003/00

US Classification:

345/705000

Abstract:

The present invention is a video aid to assembly system and methods of using the system for providing production personnel access to manufacturing drawing information with minimum user intervention. The system scrolls manufacturing drawings automatically as a monitor is moved relative to a workpiece so that the manufacturing drawing corresponds with the identical location on the workpiece. The system also eliminates the need to store, retrieve, and maintain individual hardcopy drawings. In addition, the color capabilities of the system improve detailed part recognition and provide the ability to highlight items that require special attention. Moreover, mark-ups, such as build instructions or modifications, can be electronically overlaid on the drawing without modifying the original assembly drawing.

US Patent:

20210323652, Oct 21, 2021

Filed:

Jun 29, 2021

Appl. No.:

17/304968

Inventors:

- Chicago IL, US
Dennis R. Mathis - Charleston SC, US

International Classification:

B64C 1/06
B64C 1/12
B64C 1/10

Abstract:

A pressure bulkhead assembly support tool configured to hold a pressure bulkhead system is presented. The pressure bulkhead assembly support tool comprises a segmented frame having a substantially circular path. A plurality of circumferential force assemblies restrains the pressure bulkhead system such that a circumferential surface of the pressure bulkhead system with a nominal shape is formed. A plurality of alignment probes holds and positions the pressure bulkhead system relative to the segmented frame.

US Patent:

20210261231, Aug 26, 2021

Filed:

Feb 21, 2020

Appl. No.:

16/798220

Inventors:

- Chicago IL, US
David Raines - Huntsville AL, US
Scott L. Smotherman - Huntsville AL, US
Paul Gabriel Werntges - Charleston SC, US
Dennis Ray Mathis - Charleston SC, US
Daniel B. Freeman - Goose Creek SC, US

Assignee:

The Boeing Company - Chicago IL

International Classification:

B64C 1/06
B64C 1/12

Abstract:

An apparatus for mounting a splice component for joining two or more workpieces includes a base plate and one or more bias assemblies. The base plate includes one or more passageways extending through the base plate and one or more barrier elements mounted proximate to the passageway(s). Each barrier element and associated passageway are configured to freely receive a protrusion of a splice component. The bias assembly includes a bias element that extends proximate to the passageway and is configured to move resiliently to urge the protrusion against the barrier element. The passageway, the barrier element, and the bias assembly are configured to allow movement of the splice component relative to the base plate transverse to a direction of force applied by the bias element on the protrusion.

US Patent:

20210046601, Feb 18, 2021

Filed:

Aug 14, 2019

Appl. No.:

16/540928

Inventors:

- Chicago IL, US
Ashley Susan Combs - North Charleston SC, US
Dennis R. Mathis - Charleston SC, US
Matthew James Berden - Charleston SC, US

International Classification:

B23Q 17/24
B23Q 17/22

Abstract:

A positioning device for positioning a drilling tool of a drilling apparatus relative to a workpiece includes a cage mounted to the drilling apparatus such that the cage at least partially surrounds the drilling tool. The cage includes an end portion that includes an alignment surface that is configured to be engaged in physical contact with a workpiece surface of the workpiece. The alignment surface of the cage is oriented relative to a centerline axis of the drilling tool such that the centerline axis extends approximately normal to the workpiece surface when the alignment surface of the cage is in contact with the workpiece surface. The positioning device also includes a laser projector mounted to the cage such that the laser projector is configured to project an illuminated dot onto the workpiece surface that indicates where the centerline axis of the drilling tool intersects the workpiece surface.

US Patent:

20210031898, Feb 4, 2021

Filed:

Jul 30, 2019

Appl. No.:

16/526724

Inventors:

- Chicago IL, US
Dennis R. Mathis - Charleston SC, US

International Classification:

B64C 1/06
B64C 1/10
B64C 1/12

Abstract:

A pressure bulkhead system is presented. The pressure bulkhead system comprises an aft pressure bulkhead having a bulkhead interface surface, skin splice angles positioned adjacent to one another and joined to the aft pressure bulkhead, and a plurality of shims between the flange surface and the bulkhead interface surface of the aft pressure bulkhead. The skin splice angles form a circumferential surface and a flange surface, wherein the circumferential surface has a nominal shape.