Golf club

• US 5,176,383 A
• Filed: 10/30/1991
• Issued: 01/05/1993
• Est. Priority Date: 10/30/1991
• Status: Expired due to Fees

• Current Assignee: Greenirons Incorporated
• Original Assignee: Greenirons Incorporated
• Inventors: Duclos, Clovis R.
• Primary Examiner(s): Millin, V.
• Assistant Examiner(s): Passaniti, Sebastiano
• Application Number:
  US07/784,712
• Time in Patent Office: 433 Days
• Field of Search: 273/77 R, 273/167-175, 273/194 B, 273/78
• US Class Current: 473/342
• 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 53/0454 Strengthening ribs on the rear surface of the impact face plate
• CPC Class Codes: A63B 53/0458 with non-uniform thickness of the impact face plate
• 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" club whose head includes a weight positioned behind the center of percussion of the club head face to promote energy transfer to a golf ball. The head can be manufactured from traditional materials such as wood, but in its preferred embodiments, it is constructed from composite or metal material with an embedded faceplate reinforced by a support member that extends rearwardly and spaces the weight from the faceplate to increase the moment of inertia of the club about a vertical axis and reduce flexure of the faceplate.

Claims

1. A golf club head having:

a body which includes;

a front portion;

a rear portion; and

a cavity extending from said front portion toward said rear portion; and

faceplate means extending across said cavity at said front portion, said faceplate means including;

a faceplate surface for striking a golf ball;

a tubular support portion which extends to said rear portion of said head in said cavity; and

a faceplate integral with said tubular support portion, said faceplate surface being positioned on said faceplate, said faceplate including;

a rear portion connecting to said tubular support portion;

a toe side having;

a relieved portion at said rear portion of said faceplate; and

a heel side, said support portion being positioned closer to said toe side than said heel side an amount being generally balanced by said relieved portion, said head further including;

a weight positioned at least in part in said tubular support portion spaced from said faceplate toward said rear portion of said head, said weight and faceplate thereby providing a high moment of inertia which acts to reduce twisting of the head when miss hit while concentrating their mass behind said faceplate surface.

2. A golf club head having:

a body constructed from a material having a first density, said body including;

a front portion;

a sole portion including;

a lower sole surface;

rear portion including;

a support pocket; and

a cavity extending from said front portion toward said rear portion, said cavity being defined by an inner wall; and

faceplate means constructed from a material having a second density greater that said first density, said faceplate means extending across said cavity at said front portion, said faceplate means including;

a faceplate surface for striking a golf ball;

a tubular support portion spaced from said inner wall and extending to said rear portion of said head in said cavity generally parallel to said lower sole surface; and

a faceplate integral with said tubular support portion, said faceplate surface being positioned on said faceplate, said head further including;

a separate weight constructed from a material having a third density greater than said second density, said weight being positioned partially in said tubular support portion spaced from said faceplate toward said rear portion of said head, said weight and faceplate thereby providing a high moment of inertia which acts to reduce twisting of the head when miss hit while concentrating their mass behind said faceplate surface, said separate weight including;

a support extension that nests within said support pocket.

3. The golf club head as defined in claim 2 wherein said separate weight and faceplate are adhesively retained within said body cavity.

4. The golf club head as defined in claim 2 wherein said faceplate surface includes:

a center of percussion, and said tubular support portion has a central axis extending in a line from said faceplate surface to said rear portion which generally aligns with said center of percussion horizontally.

5. A golf club head having:

a body including;

a front portion;

a sole portion including;

a lower sole surface;

a rear portion; and

a cavity extending from said front portion toward said rear portion, said cavity being defined at least in part by an inner wall;

a faceplate member extending across said cavity at said front portion, said faceplate means including;

a faceplate portion having;

a faceplate surface for striking a golf ball; and

a rear surface;

a hollow tubular support portion integral with said faceplate portion extending from said rear surface of said faceplate portion toward said rear portion of said head in said cavity, said hollow tubular support portion being orientated generally parallel to said lower sole surface; and

a separate weight nested partially in said tubular support portion spaced from said faceplate portion toward said rear portion of said head, wherein said rear portion includes;

a support pocket, said hollow tubular support portion includes;

a rear end;

a radial end surface at said rear end thereof, and wherein said separate weight includes;

a cylindrical portion which is positioned within said tubular support portion;

a flange which is positioned adjacent said radial end surface; and

a rearwardly extending cylindrical portion which nests in said support pocket in said rear portion of said body.

6. The golf club head as defined in claim 5 wherein said separate weight is constructed from material that is heavy in relation to the material from which said faceplate member is constructed, and said faceplate member is constructed from material that is heavy in relation to the material from which said body is constructed and having a volume so that its mass approaches the mass of said separate weight, said separate weight and faceplate member thereby providing a high moment of inertia against twisting of said head while concentrating mass behind said faceplate surface generally in horizontal alignment with the center of a golf ball being hit.

7. A golf club head having:

a body including;

a front portion;

a sole portion including;

a lower sole surface;

a rear portion; and

a cavity extending from said front portion toward said rear portion, said cavity being defined at least in part by an inner wall;

a faceplate member extending across said cavity at said front portion, said faceplate means including;

a faceplate portion having;

a faceplate surface for striking a golf ball; and

a rear surface;

a hollow tubular support portion integral with said faceplate portion extending from said rear surface of said faceplate portion toward said rear portion of said head in said cavity, said hollow tubular support portion being orientated generally parallel to said lower sole surface; and

a separate weight nested partially in said tubular support portion spaced from said faceplate portion toward said rear portion of said head, wherein said hollow tubular support portion includes;

an inner cylindrical surface;

an outer cylindrical surface;

a first end at said faceplate portion; and

a second opposite end, said second opposite end having;

a radial ring surface extending between said inner and outer cylindrical surfaces, and wherein said separate weight includes;

a cylindrical plug portion having;

a cylindrical surface in contact with said inner cylindrical surface; and

a flange portion having;

a forward facing radial surface extending outwardly from said cylindrical surface of said cylindrical plug in abutment with said radial ring surface.

8. The golf club head as defined in claim 7 wherein said separate weight is constructed from material that is heavy in relation to the material from which said faceplate member is constructed, and said faceplate member is constructed from material that is heavy in relation to the material from which said body is constructed and having a volume so that its mass approaches the mass of said separate weight, said separate weight and faceplate member thereby providing a high moment of inertia against twisting of said head while concentrating mass behind said faceplate surfaced generally in horizontal alignment with the center of a golf ball being hit.

9. The golf club head as defined in claim 7 wherein said rear portion of said body includes:

a generally vertical rear abutment surface; and

a support pocket formed in said rear abutment surface, said flange portion of said separate weight including;

an outer cylindrical flange surface having a diameter similar to the diameter of said outer cylindrical surface of said hollow tubular support portion; and

a support extension which nests within said support pocket.

10. The golf club head as defined in claim 9 wherein said rear portion of said body includes:

an orifice therethrough, said support extension includes;

a threaded opening therein, and wherein said head includes;

a threaded fastener that extends through said orifice and is threadably attached to said threaded opening to secure said weight to said body.