David T Llewellyn

US Patent:

6416422, Jul 9, 2002

Filed:

Jan 12, 2001

Appl. No.:

09/759973

Inventors:

Masao Nagai - Duluth GA
David Llewellyn - Norcross GA

Assignee:

Mizuno Corporation - Osaka

International Classification:

A63B 5304

US Classification:

473328

Abstract:

A golf club head having a sole portion which includes a first and second outside runner carried by the sole portion. The outside runners are offset from one another to define a deflection channel. A deflection element is carried within the deflection channel. The deflection element has a front and a rear and an intermediary portion which extends from the front to the rear. The intermediary portion rises from the front towards the rear to a general height. The height of the intermediary portion of the deflection element does not exceed the height of the first and second outside runners.

US Patent:

D461865, Aug 20, 2002

Filed:

Nov 29, 2001

Appl. No.:

29/150931

Inventors:

Masao Nagai - Duluth GA
Andy Kikidas - Cobham, GB
David Llewellyn - Duluth GA
Harry Taylor - Old Hickory TN

Assignee:

Mizuno Corporation - Osaka

International Classification:

2102

US Classification:

D21759

US Patent:

D466576, Dec 3, 2002

Filed:

Sep 21, 2001

Appl. No.:

29/148513

Inventors:

Masao Nagai - Duluth GA
David Llewellyn - Norcross GA

Assignee:

Mizuno Corporation - Osaka

International Classification:

2102

US Classification:

D21759

US Patent:

D466961, Dec 10, 2002

Filed:

Nov 6, 2001

Appl. No.:

29/150532

Inventors:

Masao Nagai - Duluth GA
David Llewellyn - Duluth GA

Assignee:

Mizuno Corporation - Norcross GA

International Classification:

2102

US Classification:

D21759

US Patent:

D473904, Apr 29, 2003

Filed:

Mar 21, 2002

Appl. No.:

29/157595

Inventors:

David G. Llewellyn - Duluth GA
Harry B. Taylor - Old Hickory TN
Mamoru Saraie - Osaka, JP

Assignee:

Mizuno Corporation - Osaka

International Classification:

2102

US Classification:

D21759

US Patent:

6793587, Sep 21, 2004

Filed:

Jul 31, 2002

Appl. No.:

10/209677

Inventors:

David G. Llewellyn - Duluth GA
Masao Nagai - Suwanee GA

Assignee:

Mizuno Corporation - Osaka

International Classification:

A63B 5306

US Classification:

473242, 473324, 473407

Abstract:

A trial golf club and golf fitting system for determining at least one custom fitted golf club. The trial club includes a golf club head having a sole defined by a radius of curvature. The sole of the golf club head includes graduated indicia for identifying an optimal lie angle for the fitted club. When the golfer swings the trial golf club, the optimal lie angle of the fitted club is identified by locating the point of impact on the sole of the head of the trial golf club.

US Patent:

6843733, Jan 18, 2005

Filed:

Apr 2, 2003

Appl. No.:

10/405744

Inventors:

David G. Llewellyn - Duluth GA, US
Harry B. Taylor - Old Hickory TN, US
Mamoru Saraie - Hirakata, JP

Assignee:

Mizuno Corporation - Osaka

International Classification:

A63B 5304

US Classification:

473349, 473350

Abstract:

An iron golf club head consisting of a back portion, a weight portion, and the cavity portion, which form a “multi-tier” weight distribution configuration. The cavity portion being delineated by a top segment, a toe segment, a sole segment and a heel segment. The first tier is defined by the back portion between the sole and the sole segment of the cavity portion. The second tier is defined by the weight portion, which is recessed from the back portion and is located between the sole segment of the cavity portion and a top edge that is located a predefined height above the sole segment. The third tier of the weight distribution configuration is defined by the cavity portion between the upper segment of the weight portion and the upper edge of the cavity portion.

US Patent:

6855069, Feb 15, 2005

Filed:

Jul 31, 2002

Appl. No.:

10/209301

Inventors:

Masao Nagai - Suwanee GA, US
David G. Llewellyn - Duluth GA, US

Assignee:

Mizuno Corporation - Osaka

International Classification:

A63B053/04

US Classification:

473335, 473338, 473345, 473350

Abstract:

A golf club head comprising of a top, a sole, a toe, a heel, a front plate having a front and rear side, and an extended back portion integral with the sole and the rear side defining a cavity wherein the extended back portion is integral with the rear side between the top and the sole of the golf club head.