Ronnie L Martin

US Patent:

6543294, Apr 8, 2003

Filed:

Dec 15, 2000

Appl. No.:

09/737924

Inventors:

Frank Bradley Stamps - Colleyville TX
Ronnie Lee Martin - Arlington TX

Assignee:

Bell Helicopter Textron Inc. - Fort Worth TX

International Classification:

G01L 708

US Classification:

737291, 73715, 73716, 73709

Abstract:

A pressure indicator according to the present invention monitors the pressure of the fluid in a vessel. One embodiment of the present invention comprises a closed pressurized gas volume behind a dimpled metal diaphragm. In normal operation, the force of the fluid pressure acting on the external surface of the diaphragm overcomes the force of the gas pressure acting on the internal surface of the diaphragm to hold the diaphragm in a concave geometry. In the event of a sufficient loss of fluid pressure, the force of the gas pressure acting on the internal surface of the diaphragm will overcome the force of the fluid pressure acting on the external surface of the diaphragm, thereby moving the diaphragm into a convex geometry. A viewing window disposed in the side of the vessel can be used to view the pressure indicator and determine the shape of the indicator diaphragm.

US Patent:

7665969, Feb 23, 2010

Filed:

Jan 24, 2005

Appl. No.:

11/040173

Inventors:

Frank B. Stamps - Colleyville TX, US
Patrick R. Tisdale - Roanoke TX, US
James L. Braswell - Colleyville TX, US
Tom Campbell - Fort Worth TX, US
Timothy K. Ledbetter - Euless TX, US
Joseph J. Zierer - Fort Worth TX, US
D. J. Reddy - Hurst TX, US
Mark A. Wiinikka - Hurst TX, US
Ronnie L. Martin - Arlington TX, US
David A. Haynie - Euless TX, US
Stanley Gene Sadler - Arlington TX, US
Ron Measom - Hurst TX, US
Paul Oldroyd - Azle TX, US
Tricia Hiros - Haltom City TX, US
Jim Harse - Bedford TX, US
Bob Mullins - Mansfield TX, US

Assignee:

Bell Helicopter Textron Inc. - Hurst TX

International Classification:

B63H 1/06

US Classification:

416134A, 416135, 416140, 416141

Abstract:

An assembly for providing flexure to a blade of a rotary blade system, the assembly including an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween. At least one of the upper and lower yoke surfaces having a layer of cushioning material positioned thereon and secured thereto. The layer of cushioning material extending along and following the general contour of yoke surface, and the layer of cushioning material directly contacting a support plate. Another embodiment is an assembly for providing flexure to a blade of a rotary blade system, including, an upper support plate having an upper curved surface, a lower support plate having a lower curved surface, and a yoke positioned therebetween and directly contacting the support plates wherein one of the curved surfaces is a non-circular arc that does not form part of the circumference of a circle.

US Patent:

42995400, Nov 10, 1981

Filed:

Jan 2, 1979

Appl. No.:

6/000272

Inventors:

Cecil E. Covington - Hurst TX
Ronnie L. Martin - Arlington TX

Assignee:

Textron Inc. - Providence RI

International Classification:

B64C 1120
B64C 1126

US Classification:

416226

Abstract:

A tail rotor blade for a helicopter has a core 22 whose shape defines the trailing portions of the blade. Core 22 is adhered to upper 20 and lower 21 metallic skins which extend within and are adhered to the inner surfaces at the trailing edge of a metallic nose spar 10. A pair of straps 30, 31 of unidirectional fiberglass strands extend spanwise and are adhered to the inner surface of the leading edges of the skins 20, 21 and the outer leading surfaces of the core 22 as to span chordwise the regions of the joints between nose spar 10 and skins 20, 21.