WEIGHT ADJUSTABLE GOLF CLUB HEAD

• US 20080132353A1
• Filed: 12/01/2006
• Published: 06/05/2008
• Est. Priority Date: 12/01/2006
• Status: Abandoned Application

• Current Assignee: Pen-Long Hsiao
• Original Assignee: Pen-Long Hsiao
• Inventors: Hsiao, Pen-Long
• Application Number:
  US11/565,667
• Publication Number:
  US 20080132353A1
• Time in Patent Office: Days
• US Class Current: 473/336
• CPC Class Codes: A63B 2053/0491 with added weights, e.g. changeable, replaceable
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/02 Ballast means for adjusting the centre of mass A63B60/24, A63B60/54 take precedence

Abstract

The club head contains a number of blind holes arranged at appropriate places other than the hitting surface of the club head. Each blind hole is for the accommodation of a weight member. Each weight member contains at least a weight element and a fastening element. The fastening element has a threaded rod extending from the bottom of a cone-shaped head. The fastening element is squeezed into an end of the weight element with the threaded rod penetrating through the weight element and into the club head for fixation. On the other hand, the circumference of the weight element has a number of slits so that the cone-shaped head of the fastening element can force the wall of the weight element to press tightly against the hole to further enhance the fixation.

Claims

1. A club head comprising:

a plurality of blind holes arranged at appropriate places other than the hitting surface of said club head, the bottom of each blind hole having a hole in the center;

a plurality of weight members removably housed inside said blind holes, respectively, each weight member having a tubular weight element, and a fastening element and a weight element plugged into a first end and a second end of said weight element, respectively;

wherein said weight element has a plurality of first slits extending from said first end of said weight element towards said second end and a plurality of second slits extending from said second end towards said first end, said first and second slits being interleaved and uniformly spaced;

said fastening element has a cone-shaped head and a threaded rod extending from the bottom of said head;

said seat element has cone-shaped body with an axial threaded through channel and a base having a slightly larger diameter than that of said cone-shaped body;

said weight element has cone-shaped inner walls at said first and second ends so as to fit the shapes of said head of said fastening element and said body of said seat element; and

said threaded rod has an appropriate length to be screwed or unscrewed through said weight element, said through channel of said seat element, and into or from said hole on the bottom of each blind hole.

2. The club head according to claim 1, wherein the bottom of each blind hole has a cross-shaped wedge;

and the bottom surface of said base of said seat element has a correspondingly shaped groove so that, when said wedge is embedded into said groove as said threaded rod is screwed or unscrewed, said seat element is prevented form rotation.

3. The club head according to claim 1, wherein said weight element is made out of the following material:

steel, titanium, nickel, aluminum, copper, and thermoplastic polyurethane.

4. A club head comprising:

a plurality of blind holes arranged at appropriate places other than the hitting surface of said club head, the inner wall of each blind hole having a plurality of opposing axial slots;

a plurality of weight members removably housed inside said blind holes, respectively, each weight member having a tubular weight element, and a fastening element and a weight element plugged into a first end and a second end of said weight element;

wherein said weight element has a plurality of first slits extending from said first end of said weight element towards said second end and a plurality of second slits extending from said second end towards said first end, said first and second slits being interleaved and uniformly spaced;

said fastening element has a cone-shaped head and a threaded rod extending from the bottom of said head;

said seat element has a cone-shaped body with an axial threaded through channel and a base having a slightly larger diameter than that of said cone-shaped body, said base having a plurality of tenons protruding radially from the rim;

said tenons are fit inside said slots of said blind hole, respectively, so that, when said threaded rod is screwed or unscrewed, said seat element is prevented from rotation;

said weight element has cone-shaped inner walls at said first and second ends so as to fit the shapes of said head of said fastening element and said body of said seat element; and

said threaded rod has an appropriate length to be screwed or unscrewed through said weight element and said through channel of said seal element until the tip of said threaded rod reaches the bottom of said blind hole.

5. The club head according to claim 4, wherein said weight element is made one of the following material:

steel, titanium, nickel, aluminum, copper, and thermoplastic polyurethane.

6. A club head comprising:

a plurality of blind holes arranged at appropriate places other than the hitting surface of said club head, the bottom of each blind hole having a hole of a particular geometric shape in the center;

a plurality of weight members removably housed inside said blind holes, respectively, each weight member having a weight element with a basin-like shape and a fastening element plugged into a front opening of said weight element;

wherein said weight element has a block extending from the bottom of said weight element and having a corresponding geometrical cross-sectional shape so as to fit inside said hole on the bottom of said blind hole;

said weight element has a plurality of slits extending from said front opening towards the bottom of said weight element and a through channel through said block;

said fastening element has a cone-shaped head and a threaded rod extending from the bottom of said head;

said weight element has a cone-shaped inner wall at said front opening so as to fit the shape of said head of said fastening element; and

said threaded rod has an appropriate length to be screwed or unscrewed through and through channel of said weight element, and into or from the interior of said club head.

7. The club head according to claim 6, wherein said weight element is made one of the following material:

steel, titanium, nickel, aluminum, copper, and thermoplastic polyurethane.