Golf wood clubhead

• US 5,398,935 A
• Filed: 09/15/1993
• Issued: 03/21/1995
• Est. Priority Date: 11/29/1990
• Status: Expired due to Fees

• Current Assignee: American Dental Association Health Foundation
• Original Assignee: Maruman Golf Kabushikikaisha
• Inventors: Katayama, Yutaka
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US08/120,856
• Time in Patent Office: 552 Days
• Field of Search: 273/167 R-77 A, 273/79, 273/77 R, 273/193 R, 273/194 R, 273/164.1, 273/186.2, 273/187.4
• US Class Current: 473/349
• CPC Class Codes: A63B 53/04 Heads
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0466 wood-type
• CPC Class Codes: A63B 60/00 Details or accessories of golf clubs, bats, rackets or the like

Abstract

A golf wood clubhead has a head body having heel and toe portions and face and sole portions which extend between the heel and toe portions, respectively, and define a leading edge at the intersection thereof. The height of the face portion at the side close to the toe portion is nearly equal to or greater than that of the same at the center thereof.

Claims

1. A golf wood clubhead, comprising:

a head body having a heel portion, a toe portion, and a face portion and a sole portion which extend between said heel portion and said toe portion, respectively, said face portion and said sole portion intersecting at a leading edge;

wherein said sole portion of said head body is convex downwardly, a height of said face portion at a side close to said toe portion being nearly equal to or greater than that of a height at a center portion of said face portion, a width from said leading edge of said head body to a rear end of said sole portion being nearly equal to or less than a half of a width from said leading edge of said head body to a rear end of said head body, said head body having a nearly flat top portion extending from an upper edge of said face portion of said head body to said rear end of said head body, wherein said top portion is formed so as to extend substantially in parallel to the ground when the clubhead is brought into address on the ground, and wherein a width from said leading edge of said head body to said rear end of said head body is nearly equal to or less than a length between said heel portion and said toe portion of said head body.

2. The golf wood clubhead according to claim 1, wherein said head body has a rounded lower back portion of a certain radius of curvature within a region from said rear end of said sole portion to said rear end of said head body.

3. The golf wood clubhead according to claim 2, wherein said sole portion is formed as a rounded surface of a radius of curvature which is the same as that of said rounded lower back portion which is continuously connected at said rear end of said sole portion with said rounded lower back portion.

4. A golf wood clubhead, comprising:

a head body having a heel portion, a toe portion, and a face portion and a sole portion which extend between said heel portion and said toe portion, respectively, said face portion and said sole portion intersecting at a leading edge;

wherein a height of said face portion at a side close to said toe portion is nearly equal to or greater than that of a height at a center portion of said face portion, a width from said leading edge of said head body to a rear end of said sole portion being nearly equal to or less than a half of a width from said leading edge of said head body to a rear end of said head body, said head body having a nearly flat top portion extending from an upper edge of said face portion of said head body to said rear end of said head body, wherein said top portion is formed so as to extend substantially in parallel to the ground when the clubhead is brought into address on the ground, and wherein a width from said leading edge of said head body to said rear end of said head body is nearly equal to or less than a length between said heel portion and said toe portion of said head body;

wherein said head body has a rounded lower back portion of a certain radius of curvature within a region from said rear end of said sole portion to said rear end of said head body; and

wherein said sole portion has a nearly flat surface which is continuously connected at said rear end of said sole portion with said rounded lower back portion.

5. The golf wood clubhead according to claim 4, wherein said leading edge of said head body is formed as a rounded edge.