Andre Terzaghi

US Patent:

D3940942, May 5, 1998

Filed:

May 6, 1993

Appl. No.:

D/008022

Inventors:

Stephen J. Davis - Washington Crossing PA
Andre Terzaghi - Havertown PA

Assignee:

Prince Manufacturing, Inc. - Bordentown NJ

International Classification:

2199

US Classification:

D21212

US Patent:

D3897877, Jan 27, 1998

Filed:

Jul 29, 1996

Appl. No.:

D/057634

Inventors:

Michael L. Zeigle - Sun Prairie WI
Andre Terzaghi - Sun Prairie WI
Weston M. Wilcox - Sun Prairie WI

International Classification:

1211

US Classification:

D12111

US Patent:

54642108, Nov 7, 1995

Filed:

Aug 24, 1994

Appl. No.:

8/295300

Inventors:

Stephen J. Davis - Washington Crossing PA
Andre Terzaghi - Havertown PA

Assignee:

Prince Sports Group, Inc. - Bordentown NJ

International Classification:

A63B 4902
A63B 4908

US Classification:

273 73C

Abstract:

A tennis racquet has an overall length greater than 28 inches, preferably between 29 and 32 inches, an egg shape strung surface having a length of at least 14 inches, and a strung surface area greater than 95 square inches. The frame is of widebody construction and formed of a composite material so as to have a minimum weight per unit length. While the overall length is increased, the strung weight of the racquet does not exceed 300 grams, and the mass moment of inertia about the butt does not exceed 56 g-m. sup. 2. The foregoing racquet produces a number of playing advantages, while maintaining a conventional mass moment of inertia about the handle and thus retain good maneuverability.

US Patent:

D416351, Nov 24, 1998

Filed:

Aug 30, 1996

Appl. No.:

D/059718

Inventors:

Stephen J. Davis - Washington Crossing PA
Andre Terzaghi - San Diego CA

Assignee:

Prince Sports Group, Inc. - Bordentown NJ

International Classification:

2102

US Classification:

D21212

US Patent:

53222792, Jun 21, 1994

Filed:

Aug 16, 1993

Appl. No.:

8/108161

Inventors:

Stephen J. Davis - Washington Crossing PA
Andre Terzaghi - Havertown PA
Richard Hulock - Quakertown PA
William Harvie - Yardley PA

Assignee:

Prince Manufacturing, Inc. - Lawrenceville NJ

International Classification:

A63B 5106

US Classification:

273 73D

Abstract:

A tennis racquet has a frame which includes a frame head portion with an outwardly facing stringing groove and an inwardly facing surface which is generally convex. The stringing groove includes a pair of angled side wall surfaces. A series of stringing holes extend through each side wall surface and the opposing convex surface to define holes for a pair of generally parallel stringing surfaces. Preferably, the string holes extend at an angle of about 45. degree. relative to the central plane of the stringing area, and the angled surfaces in the stringing groove, and the opposing surface on the convex surface, are parallel to one another and generally perpendicular to the direction of the string hole.