Richard G Tennent

US Patent:

56954085, Dec 9, 1997

Filed:

Jan 24, 1996

Appl. No.:

8/590547

Inventors:

Richard DeLaCruz - Carlsbad CA
Richard Parente - San Diego CA
Richard Tennent - Alpine CA

Assignee:

Goldwin Golf USA, Inc. - Carlsbad CA

International Classification:

A63B 5312
A63B 5314

US Classification:

473300

Abstract:

Article of manufacture comprising a golf club shaft is described as having a grip region which approximates the diameter of a standard golf club with a compliant grip. Applied to the shaft is an ultra thin grip with a view to reducing the overall weight of the shaft and thereby shifting the balance point of a golf club incorporating the shaft to a region just proximate the head.

US Patent:

56203802, Apr 15, 1997

Filed:

Dec 8, 1995

Appl. No.:

8/569755

Inventors:

Richard L. Tennent - Alpine CA
Richard G. Tennent - El Cajon CA

Assignee:

UniFiber Corporation - San Diego CA

International Classification:

A63B 5310

US Classification:

473319

Abstract:

A light weight golf club shaft is described having a "modified hourglass" shape which provides many predetermined combinations of flex, stiffness and torque (which together are perceived as shaft and club "feel") and which is largely immune to breakage in normal play. The shaft is an improvement over our previous shaft defined in U. S. Pat. No. 5,265,872, and reduces shaft weight to the level desired by a golfer by using a substantially uniform shaft wall thickness while maintaining the unique "hour glass" external profile of our previous shaft. The shaft is formed of a base with axial sections: a grip section, an upper flare section, a flex control section, a lower flare section, and a hosel section, the whole forming an exterior shaft profile. The shaft may be made from metal such as steel, titanium, aluminum or their alloys, or composites formed of reinforcing fibers and polymeric materials. The preferred fibers for reinforcement are the carbon, ceramic, metallic, glass, aramid and extended chain polyethylene fibers, most preferably the carbon fibers.

US Patent:

D474564, Mar 30, 1999

Filed:

Apr 17, 1997

Appl. No.:

D/070886

Inventors:

Richard De La Cruz - Carlsbad CA
Richard Parente - San Diego CA
Richard Tennent - Alpine CA

International Classification:

2102

US Classification:

D21757

US Patent:

52658724, Nov 30, 1993

Filed:

Dec 23, 1992

Appl. No.:

7/995767

Inventors:

Richard L. Tennent - Alpine CA
Richard G. Tennent - Spring Valley CA
Jerald A. Rolla - Santee CA

Assignee:

UniFiber USA - Spring Valley CA

International Classification:

A63B 5310

US Classification:

273 80B

Abstract:

A golf club shaft is described having a "modified hourglass" shape which provides many predetermined combinations of flex, stiffness and torque (which together are perceived as shaft and club "feel") and which is virtually immune to breakage in normal play. The shaft is formed of a base rod with expanded axial sections: a grip section, an upper flare section, a flex control section, a lower flare section, and a hosel section. The lower flare section increases in diameter from its junction with the flex control section to a maximum diameter at its junction with the hosel section, which when the club is assembled is preferably recessed into the club head hosel. Variation of the relative lengths and/or thicknesses of the flex control section and the lower flare section determine the location of the junction between them, and thus the relative amounts of flex, torque and stiffness which produce the feel desired in the shaft. The shafts are formed of composite of polymers (resin) reinforced internally by fibers, preferably carbon fibers.

US Patent:

40976262, Jun 27, 1978

Filed:

Jun 7, 1976

Appl. No.:

5/693147

Inventors:

Richard Lee Tennent - La Mesa CA

Assignee:

Grafalloy Corporation - El Cajon CA

International Classification:

D02G 300
A63B 5310
B32B 512

US Classification:

428 36

Abstract:

A carbon graphite fiber reinforced shaft incorporating longitudinal plies and radial plies. In transverse aspect, the radial plies incorporate two interleaved helices with three turns around the shaft. The fibers in the two helices are oppositely oriented at an angle to the longitudinal axis of the shaft. The fibers in one radial ply have a modulus that is substantially 50% greater than the modulus of the opposed interleaved radial ply.