U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Adjustable weight golf club

Patent 5947840 Issued on September 7, 1999. Estimated Expiration Date: Icon_subject July 24, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1133129

2056335

3059976

3652094

Golf club head
Patent #: 3995865
Issued on: 12/07/1976
Inventor: Cochran ,   et al.

Golf putter
Patent #: 4010958
Issued on: 03/08/1977
Inventor: Long

Golf club heads with adjustable weighting
Patent #: 4607846
Issued on: 08/26/1986
Inventor: Perkins

Golf club head
Patent #: 4867458
Issued on: 09/19/1989
Inventor: Sumikawa ,   et al.

Golf club
Patent #: 4869507
Issued on: 09/26/1989
Inventor: Sahm

Golf putter
Patent #: 4872684
Issued on: 10/10/1989
Inventor: Dippel

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Inventor

Application

No. 899939 filed on 07/24/1997

US Classes:

473/335, Embedded in head473/349Particular material composition or mass distribution

Examiners

Primary: Passaniti, Sebastiano

Attorney, Agent or Firm

International Class

A63B 053/04

Foreign Application Priority Data

1997-01-24 EP

Abstract

The present invention provides for golf clubs, in particular woods, which include a three dimensional weighting system including at least two weight ports which are attached to the outside of the clubhead. The weights are directly axially aligned to, and form an equilateral triangle with the clubs center of gravity. The weights are preferably located in close proximity to the sole plate of the club in the rear toe and heel position. The two double sided, from top to bottom weights, facilitate vertical, horizontal and lateral movement of the club's center of gravity. The weights are made of various densities which can easily be interchanged to make the club lighter or heavier. This weighting system allows for individual customization of the club to increase or decrease the hooking or slicing of the ball. It also enables the club to have the greatest possible expansion of the moment of inertia, as well as the ability to lower or raise the clubs center of gravity to customize shot trajectory.

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