Golf club head

• US 6,299,548 B1
• Filed: 08/25/1999
• Issued: 10/09/2001
• Est. Priority Date: 08/25/1999
• Status: Expired due to Fees

• Current Assignee: Hui-Tsao Lin
• Original Assignee: Hui-Tsao Lin
• Inventors: Lin, Hui-Tsao
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US09/382,788
• Time in Patent Office: 776 Days
• Field of Search: 473/324, 473/330, 473/331, 473/349, 473/350, 473/345, 473/342
• US Class Current: 473/331
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0416 Heads having an impact surface provided by a face insert
• CPC Class Codes: A63B 53/0445 Details of grooves or the like on the impact surface
• CPC Class Codes: A63B 53/045 Strengthening ribs
• CPC Class Codes: A63B 53/0466 wood-type

Abstract

A strike face of a golf club head comprises a plurality of arched grooves formed by extending each pair of top edges respectively of two lateral walls in a groove on a back of each unit strike face between each pair of neighboring score lines in a strike face of a golf club head. In this way, the cutaway section on the back of the strike face looks like an arched bridge and the weight decrement of the arched grooves can be used for changing the center of gravity of the golf club head.

Claims

1. A strike face for a golf club head comprising a plurality of arched grooves, the grooves each having two opposed lateral walls and an arched top wall, the grooves being on a back of the strike face, a front of the strike facing having a plurality of score lines and the grooves being offset from the score lines such that in a cross-section of the face, neighboring score lines have one of the grooves therebetween, a weight decrement of the grooves changing a center of gravity of the golf club head, the two lateral walls of each groove being parallel and the arched top wall interconnects the two lateral walls of each groove wherein a circumference of one of the grooves is larger than a circumference of one of the score lines.

2. The strike face according to claim 1, wherein only one groove is between a pair of neighboring score lines in the cross-section of the face and wherein each pair of neighboring score lines have one groove therebetween.

3. The strike face according to claim 2, where spacing between the score lines is uniform and spacing between the grooves is uniform and wherein a zig-zag wave line can be formed between the front and back faces of the face in cross-section.

4. The strike face according to claim 2, wherein the two lateral walls of each groove are parallel.