Steven James Spears

US Patent:

20130105621, May 2, 2013

Filed:

Apr 11, 2011

Appl. No.:

13/699769

Inventors:

Michael R. Smith - Colleyville TX, US
Steven Spears - Hurst TX, US
Frank B. Stamps - Colleyville TX, US
Michael S. Seifert - Southlake TX, US

Assignee:

BELL HELICOPTER TEXTRON INC. - FORT WORTH TX

International Classification:

B64C 27/00
F16F 13/08

US Classification:

244 1727, 26714013

Abstract:

A pylon mounting system with vibration isolation is provided. The system generally includes a housing that defines a first fluid chamber and a second fluid chamber, a fluid disposed within the fluid chambers; a piston assembly at least partially disposed within the housing, and a tuning passage defined by the piston assembly for providing fluid communication between the fluid chambers. The piston assembly has a first arm and a second arm, and each arm has a tubeform bearing for providing pitch and roll stiffness.

US Patent:

20210156415, May 27, 2021

Filed:

Nov 25, 2019

Appl. No.:

16/694638

Inventors:

- Forth Worth TX, US
Steven Kirk Spears - Hurst TX, US

International Classification:

F16C 3/02
B29C 70/86

Abstract:

A composite shaft has a fiber orientation that is a combination of fibers perpendicular to each other and a longitudinal axis of the shaft; and a second composite layer disposed at an angle ranging between 25 to 45 degrees+/−3 degrees from the fibers in the first composite layer; a third composite layer disposed at an angle ranging between 7 to 13 degrees+/−3 degrees from the fibers in the second composite layer and each subsequent transition layer(s); a fourth composite layer disposed at an angle ranging between 25 to 45 degrees+/−3 degrees from the fibers in the third composite layer(s); and a fifth composite generally perpendicular +/−3 degrees to each other and the fibers in the fourth composite layer.

US Patent:

20170370419, Dec 28, 2017

Filed:

Jun 23, 2016

Appl. No.:

15/190790

Inventors:

- Fort Worth TX, US
Michael S. Seifert - Southlake TX, US
Steven K. Spears - Hurst TX, US
Frank B. Stamps - Colleyville TX, US

Assignee:

Bell Helicopter Textron, Inc. - Fort Worth TX

International Classification:

F16D 3/04
F16D 3/00

Abstract:

A drive coupling has first and second coaxial end adapters. A first set of at least two coaxial helical elements has a first end of each element attached to the first end adapter, and a second end of each element is coupled to the second end adapter. At least one biasing device biases the end adapters relative to each other. Torque applied to one of the end adapters is transferred through the first set of helical elements to the other end adapter, the helical elements allowing for misalignment of the end adapters during operation.

US Patent:

20150369326, Dec 24, 2015

Filed:

Jun 18, 2014

Appl. No.:

14/307715

Inventors:

- Fort Worth TX, US
Steven Spears - Hurst TX, US

International Classification:

F16F 9/53
B64C 27/00
F16F 9/00

Abstract:

Some examples of rotating shaft damping with electro-rheological fluid can be implemented as a method. At least a portion of a circumferential surface area of a portion of a rotorcraft rotating shaft is surrounded with multiple hollow members. Each hollow member includes an electro-rheological fluid having a viscosity that changes based on an electric field applied to the electro-rheological fluid. A vibration of the rotorcraft rotating shaft is controlled by changing the viscosity of the electro-rheological fluid in response to the electric field applied to the electro-rheological fluid.