Bing Ling Chao

US Patent:

20030036442, Feb 20, 2003

Filed:

Aug 17, 2001

Appl. No.:

09/932430

Inventors:

Bing Chao - San Diego CA, US
Benoit Vincent - Leucadia CA, US
Stephen Kraus - San Diego CA, US
Todd Beach - San Diego CA, US

International Classification:

A63B053/04

US Classification:

473/345000, 473/349000

Abstract:

A golf club head is formed of an alpha-beta titanium alloy body and a beta-type titanium alloy striking plate. The sole and crown of the club head are thin-walled and the striking plate transitions from a 1.7 mm central region to a 1.2 mm periphery adjacent the sole and crown junctions. The measured coefficient of restitution for this club bead is a least 0.90.

US Patent:

7278928, Oct 9, 2007

Filed:

Nov 25, 2003

Appl. No.:

10/723994

Inventors:

Martin Newman - Sharon MA, US
Nick Frame - Carlsbad CA, US
Bret Wahl - Escondido CA, US
Bing Ling Chao - San Diego CA, US
Benoit Vincent - Leucadia CA, US

Assignee:

Taylor Made Golf Company, Inc. - Carlsbad CA

International Classification:

A63B 53/04

US Classification:

473342

Abstract:

A golf club head in accordance with the invention includes a forward striking face that comprises a substantially planar recessed surface and a plurality of discrete, solid geometric shapes projecting forward from the recessed surface. Each of the geometric shapes has a volume of less than 0. 0007 mm. The distance along the recessed surface between adjacent shapes is at least 0. 1 mm. The total volume of the geometric shapes contained with a square reference region measuring 2. 5 mm by 2. 5 mm is less than 0. 05 mm.