Richard A Farris

US Patent:

41064127, Aug 15, 1978

Filed:

Apr 23, 1976

Appl. No.:

5/679620

Inventors:

Richard C. Farris - Joshua TX
William S. Butler - Burleson TX

Assignee:

Halliburton Company - Duncan OK

International Classification:

B61F 512
B61H 1100
F16F 924
F16F 938

US Classification:

105197DH

Abstract:

A piston and cylinder motion dampening device having spiral groove metering, an orificed two-way pressure relief valve or a screw-on spring or an over-extension limiting seal retainer. A push-together method of assembling a piston and cylinder motion dampening device. A motion dampening device with a baffle chamber.

US Patent:

60835834, Jul 4, 2000

Filed:

Oct 15, 1998

Appl. No.:

9/174303

Inventors:

Paul Klocek - Dallas TX
William J. MacKnight - Amherst MA
Richard J. Farris - Leeds MA
Christian Lietzau - Rhinebeck NY

Assignee:

Raytheon Company - Lexington MA
University of Massachusetts - Amherst MA

International Classification:

B32B 2736

US Classification:

428 35

Abstract:

A protective, impact resistant material and method, the material comprising a fabric of thermoplastic polymeric fibers having a strength of at least 0. 4 GPa and an elastic modulus of at least 5 GPa and a matrix of polymeric material disposed in the interstices between the fibers, the matrix having an elastic modulus in the range 0. 2 to 3. times. 10. sup. 6 psi. The polymeric fibers can be gel spun polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric. The method of making the material comprises providing a matrix of melted polymeric material transparent to energy of a predetermined type and having a predetermined melting temperature, placing a fabric of polymeric fibers having a melting temperature higher than the melting temperature of the matrix in the matrix, applying a pressure of 1000 to 6000 psi to the fabric disposed in the matrix, then raising the temperature to the melting temperature of the fabric for the minimum time required to cause consolidation of the fabric and the matrix and rapidly cooling the consolidated fabric and matrix to a temperature below the melting temperature of the fabric. In accordance with a second embodiment there is provided a fabric of polymeric fibers as in the first embodiment which is operated upon as in the first embodiment to cause melting of a sufficient portion of the fabric to fill the interstices between the fibers of the fabric and the fabric is then rapidly cooled to a temperature below the melting temperature of the fabric.

US Patent:

58796070, Mar 9, 1999

Filed:

Mar 29, 1996

Appl. No.:

8/625503

Inventors:

Paul Klocek - Dallas TX
William J. MacKnight - Amherst MA
Richard J. Farris - Leeds MA
Christian Lietzau - Mt. Vernon IN

Assignee:

Raytheon TI Systems & University of Massachusetts

International Classification:

B29C 6100

US Classification:

264231

Abstract:

A protective, impact resistant material and method which includes a fabric of thermoplastic polymeric fibers having a strength of at least 0. 5 GPa and an elastic modulus of at least 25 GPa and a matrix of polymeric material disposed in the interstices between the fibers having an elastic modulus of 0. 2 to 3. times. 10. sup. 6 psi. The polymeric fibers can be gel spun, polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric. The method includes the steps of providing a matrix of melted polymeric material transparent to energy of a predetermined type and having a predetermined melting temperature, placing a fabric of polymeric fibers having a melting temperature higher than that of the matrix in the matrix, applying a pressure of 1000 to 2000 psi to the fabric in the matrix, then raising the temperature to the melting temperature of the fabric for the time required to cause consolidation of the fabric and the matrix and rapidly cooling the consolidated fabric and matrix to a temperature below the melting temperature of the fabric. In accordance with the second embodiment there is provided a fabric of polymeric fibers as in the first embodiment which is operated upon as in the first embodiment to cause melting of a sufficient portion of the fabric to fill the interstices between the fibers of the fabric. The fabric is then rapidly cooled to a temperature below the melting temperature of the fabric.

US Patent:

55738249, Nov 12, 1996

Filed:

May 11, 1994

Appl. No.:

8/241218

Inventors:

Paul Klocek - Dallas TX
William J. MacKnight - Amherst MA
Richard J. Farris - Leeds MA
Christian Lietzau - Mt. Vernon IN

Assignee:

Texas Instruments - Dallas TX
University of Massachusetts - Amherst MA

International Classification:

B32B 2736

US Classification:

428 38

Abstract:

A protective, impact resistant material and method, the material comprising a fabric of thermoplastic polymeric fibers having a strength of at least 0. 5 GPa and an elastic modulus of at least 25 GPa and a matrix of polymeric material disposed in the interstices between the fibers, the matrix having an elastic modulus in the range 0. 2 to 3. times. 10. sup. 6 psi. The polymeric fibers can be gel spun polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric. The method of making the material comprises providing a matrix of melted polymeric material transparent to energy of a predetermined type and having a predetermined melting temperature, placing a fabric of polymeric fibers having a melting temperature higher than the melting temperature of the matrix in the matrix, applying a pressure of 1000 to 2000 psi to the fabric disposed in the matrix, then raising the temperature to the melting temperature of the fabric for the minimum time required to cause consolidation of the fabric and the matrix and rapidly cooling the consolidated fabric and matrix to a temperature below the melting temperature of the fabric. In accordance with a second embodiment there is provided a fabric of polymeric fibers as in the first embodiment which is operated upon as in the first embodiment to cause melting of a sufficient portion of the fabric to fill the interstices between the fibers of the fabric and the fabric is then rapidly cooled to a temperature below the melting temperature of the fabric.

US Patent:

60773812, Jun 20, 2000

Filed:

Jun 7, 1995

Appl. No.:

8/487818

Inventors:

Paul Klocek - Dallas TX
William J. MacKnight - Amherst MA
Richard J. Farris - Leeds MA
Christian Lietzau - Mt. Vernon IN

Assignee:

Raytheon Company - Lexington MA

International Classification:

C09J 500

US Classification:

156311

Abstract:

A method of making a protective coating material wherein there is provided a matrix of melted polymeric material transparent to energy of a predetermined type and having a predetermined melting temperature. A fabric of polymeric fibers having a melting temperature higher than the melting temperature of the matrix is placed in the matrix. The fibers are thermoplastic and have a strength of at least about 0. 5 GPa (70,000 psi) and an elastic (Young's) modulus of at least about 25 GPa (3. 6. times. 10. sup. 6 psi) and said matrix has an elastic modulus in the range from about 0. 2 to about 3. times. 10. sup. 6 psi. A pressure of from about 1000 to about 2000 psi is applied to the fabric disposed in the matrix and then the temperature is raised to about and at least the melting temperature of the fabric for about the minimum time required to cause consolidation of the fabric and the matrix. The consolidated fabric and matrix are then rapidly cooled to a temperature below the melting temperature of the fabric.

US Patent:

59356510, Aug 10, 1999

Filed:

Aug 29, 1995

Appl. No.:

8/521154

Inventors:

Paul Klocek - Dallas TX
William J. MacKnight - Amherst MA
Richard J. Farris - Leeds MA
Christian Lietzau - Rhinebeck NY

Assignee:

Raytheon TI Systems, Inc. - Lewisville TX
University of Massachusetts - Amherst MA

International Classification:

B05D 500

US Classification:

427256

Abstract:

A protective, impact resistant material and method, the material comprising a fabric of thermoplastic polymeric fibers having a strength of at least 0. 4 GPa and an elastic modulus of at least 5 GPa and a matrix of polymeric material disposed in the interstices between the fibers, the matrix having an elastic modulus in the range 0. 2 to 3. times. 10. sup. 6 psi. The polymeric fibers can be gel spun polyethylene, polypropylene, nylon, polyvinyl alcohol and polyethylene terephthalate. In a second embodiment, the matrix is derived from the fabric. The method of making the material comprises providing a matrix of melted polymeric material transparent to energy of a predetermined type and having a predetermined melting temperature, placing a fabric of polymeric fibers having a melting temperature higher than the melting temperature of the matrix in the matrix, applying a pressure of 1000 to 6000 psi to the fabric disposed in the matrix, then raising the temperature to the melting temperature of the fabric for the minimum time required to cause consolidation of the fabric and the matrix and rapidly cooling the consolidated fabric and matrix to a temperature below the melting temperature of the fabric. In accordance with a second embodiment there is provided a fabric of polymeric fibers as in the first embodiment which is operated upon as in the first embodiment to cause melting of a sufficient portion of the fabric to fill the interstices between the fibers of the fabric and the fabric is then rapidly cooled to a temperature below the melting temperature of the fabric.

US Patent:

41789598, Dec 18, 1979

Filed:

Jun 2, 1978

Appl. No.:

5/912125

Inventors:

Richard C. Farris - Joshua TX
William S. Butler - Burleson TX

Assignee:

Halliburton Company - Duncan OK

International Classification:

F16K 1718

US Classification:

1374933

Abstract:

A piston and cylinder motion dampening device having spiral groove metering, an orificed two-way pressure relief valve, a screw-on spring and an over-extension seal retainer.