Virginia S Colvin

US Patent:

49059890, Mar 6, 1990

Filed:

Jan 27, 1989

Appl. No.:

7/303489

Inventors:

David P. Colvin - Apex NC
Virginia S. Colvin - Apex NC

Assignee:

Triangle Research and Development Corporation - Raleigh NC

International Classification:

A63B 100
A63B 300

US Classification:

272 70

Abstract:

A fall intervention garment adapted to secure a person to a tethered supporting structure is disclosed. The garment is generally in the form of a vest and includes an upper section and a lower section. The lower section is formed so as to be responsive to a load being placed on the upper section for generating an inwardly directed holding force about the person's torso area. Attachment ring are connected to the upper section for detachably connecting the vest to a support structure.

US Patent:

51410796, Aug 25, 1992

Filed:

Jul 26, 1991

Appl. No.:

7/736388

Inventors:

Raymond A. Whitney - Raleigh NC
Virginia S. Colvin - Apex NC
David P. Colvin - Apex NC
James C. Mulligan - Raleigh NC

Assignee:

Triangle Research and Development Corporation - Raleigh NC

International Classification:

F01M 500

US Classification:

184 614

Abstract:

A method of obtaining enhanced thermal energy between a material forming apparatus and a cooling fluid is disclosed. A two component heat transfer fluid of the type including a carrier fluid and a plurality of discrete particles that undergo a reversible latent energy transition upon the transfer of thermal energy thereto. The temperature of the particles is adjusted (heated or cooled as necessary) to the point of the beginning of latent energy transition of the particles. The fluid is then brought into contact with a heat source such as a metal forming apparatus and a workpiece, proximate the interface therebetween. The slurry may then be collected, adjusted to the point of the beginning of latent energy transition and re-circulated to the heat source.

US Patent:

62989073, Oct 9, 2001

Filed:

Apr 26, 2000

Appl. No.:

9/558718

Inventors:

Virginia S. Colvin - Cary NC
David P. Colvin - Cary NC

Assignee:

Delta Thermal Systems, Inc. - Cary NC

International Classification:

F28F 700

US Classification:

165 46

Abstract:

A support means or pad which is adapted to overlie an area to be thermally regulated. A plurality of microcapsules are dispersed within the support pad. The support means may be a porous pad or overlying layers of a mesh-type fabric. The fabric sheets include a series of channels which may be zig-zag in shape and are filled with a temperature stabilizing means, for example, a macroencapsulated phase change material. Suitable phase change materials are paraffinic hydrocarbons and water. In another aspect of the invention, the temperature stabilizing means is distributed within the support means in proportion to the underlying thermal load.

US Patent:

52613941, Nov 16, 1993

Filed:

Sep 30, 1991

Appl. No.:

7/769130

Inventors:

James C. Mulligan - Raleigh NC
David P. Colvin - Apex NC
Virginia S. Colvin - Raleigh NC
Benjamin T. Gravely - Raleigh NC
Charles J. Lord - Cary NC
David B. Moody - Cary NC
Raymond A. Whitney - Raleigh NC
William C. Bryan - Baldenboro NC

Assignee:

Triangle Research and Development Corporation - Raleigh NC

International Classification:

A61H 2300
A61H 700

US Classification:

128 55

Abstract:

A percussive aid provides percussive force to aid in the treatment of Cystic Fibrosis and other pulmonary blockage diseases. The device includes a frame with a pair of reciprocating arms mounted thereto at one of their ends. The other end of the arms mount impactor cups. A spring is associated with each of the cups. A drive mechanism is carried by the frame and moves the arms through a predetermined path of travel from a first uncocked position to a second cocked position of maximum deflection wherein the spring is placed in tension when the arm is tripped.