John Walton Stephenson

US Patent:

6375811, Apr 23, 2002

Filed:

Aug 12, 1999

Appl. No.:

09/373126

Inventors:

James Malon Rowe - Torrance CA
John W. Stephenson - Whittier CA

Assignee:

Northrop Grumman Corporation - Los Angeles CA

International Classification:

C23C 1434

US Classification:

20419226, 20419212

Abstract:

Optical coatings and methods of fabricating the same. According to a preferred embodiment, the optical coatings comprise polymeric films formed from the disassociation of chemical products from a gaseous hydrocarbon in plasma. The disassociation process is performed in low-pressure environment and without radio frequency substrate bias. The resultant optical coatings have superior stability, durability and flexibility and may be utilized on highly flexible substrates. The coatings of the present invention can additionally be utilized for multi-layer optical designs and further, may be doped with a polar material to thus cause the coating to possess a desired index of refraction.

US Patent:

6485523, Nov 26, 2002

Filed:

Feb 16, 2001

Appl. No.:

09/785355

Inventors:

William A. Pierce - Dallas TX
John W. Stephenson - Dallas TX

Assignee:

Texas Scottish Rite Hospital for Children - Dallas TX

International Classification:

A61F 268

US Classification:

623 65

Abstract:

A golf prosthesis assisting an upper extremity amputee to swing a golf club. In one embodiment, the prosthesis comprises first and second prosthetic sockets in which the amputees limbs are received. An extension pylon extends from the first prosthetic socket towards the golf club. The second prosthetic socket is attached to the extension pylon, thereby assisting the amputee in keeping shoulders, back and hips in proper alignment during back swing and return swing. There is also a more complete transfer of energy into the swing from the shoulders, back and legs. A wrist terminal device connects the extension pylon to the golf club. The wrist terminal device emulates cocking and release of the wrists during a conventional golf swing. The wrist terminal device provides a club holder firmly holding the golf club, and a rotary joint advantageously restrained from rotation in all but a preselected plane. The preselected plane is adjustably selectable with respect to the direction in which the amputee desires to hit the ball.

US Patent:

6582473, Jun 24, 2003

Filed:

Feb 16, 2001

Appl. No.:

09/785351

Inventors:

William A. Pierce - Dallas TX
John W. Stephenson - Dallas TX

Assignee:

Texas Scottish Rite Hospital for Children - Dallas TX

International Classification:

A61F 254

US Classification:

623 65, 623 57, 623 661, 473131

Abstract:

A golf prosthesis assisting an upper extremity amputee to swing a golf club. In one embodiment, the prosthesis comprises first and second prosthetic sockets in which the amputees limbs are received. An extension pylon extends from the first prosthetic socket towards the golf club. The second prosthetic socket is attached to the extension pylon, thereby assisting the amputee in keeping shoulders, back and hips in proper alignment during back swing and return swing. There is also a more complete transfer of energy into the swing from the shoulders, back and legs. A wrist terminal device connects the extension pylon to the golf club. The wrist terminal device emulates cocking and release of the wrists during a conventional golf swing. The wrist terminal device provides a club holder firmly holding the golf club, and a rotary joint advantageously restrained from rotation in all but a preselected plane. The preselected plane is adjustably selectable with respect to the direction in which the amputee desires to hit the ball.

US Patent:

59157127, Jun 29, 1999

Filed:

May 23, 1995

Appl. No.:

8/447706

Inventors:

John Thomas Stephenson - Placentia CA
Philip Simon - Woodland Hills CA

International Classification:

B62J 2900

US Classification:

2803041

Abstract:

A removable handle for use with a wheelchair having two handles includes a handgrip crossbar which has two ends, two support posts, each of which is hollow and has a wall, and two connectors. The handgrip crossbar is coupled to one of the two ends of the handgrip crossbar in spaced parallel relation. Each connector connects one of the handles to the other end of one of the support posts. Each connector is cylindrical and has a first end, a second end and a wall. The connector is fixedly coupled to one of the two handles. The connector is slidably and detachably coupled to one of the support posts. Each support post has a hole in the wall. The connector has an inner surface with a groove adjacent to its first end. The connector also has a flat spring and a disc. The flat spring is disposed in one of the support posts.