Golf putter with bottom rail

• US 5,411,263 A
• Filed: 05/19/1994
• Issued: 05/02/1995
• Est. Priority Date: 01/28/1993
• Status: Expired due to Fees

• Current Assignee: Callaway Golf Company
• Original Assignee: Callaway Golf Company
• Inventors: Helmstetter, Richard C., Schmidt, Glenn H.
• Primary Examiner(s): Passaniti, Sebastiano
• Application Number:
  US08/246,096
• Time in Patent Office: 348 Days
• Field of Search: 273/167 R, 273/77 A, 273/77 R, 273/164.1, 273/186.1, 273/186.2, 273/193 R, 273/194 R, 273/194 B, 273/162 R, 273/80.1, 273/80.2, 273/80 C , 273/167 A, 273/174, D21/214, D21/215, D21/216, D21/217, D21/218, D21/219, D21/220
• US Class Current: 473/313
• CPC Class Codes: A63B 53/0433 with special sole configurations
• CPC Class Codes: A63B 53/0487 for putters A63B53/065 takes precedence

Abstract

A golf putter for use with a putter shaft supporting a head, the head comprising in combination a putter body having a heel, toe, sole defining a bottom wall, and a ball striking front face, the body elongated between the heel and toe; a control rail projecting downwardly from the bottom wall, the rail being elongated in a direction between the heel and toe to engage the turf as the putter is placed downwardly on a golf green, and in a manner to stabilize the head against twist during the head downward placement, and the rail spaced rearwardly from the front face along the major length of the rail.

Claims

1. A golf putter for use with a putter shaft supporting a head, the head comprising, in combination:

a) a putter body having a heel, toe, sole defining a bottom wall, and a ball striking front face, the body elongated between the heel and toe, and

b) a control rail projecting downwardly from said bottom wall, the rail being elongated in a direction between the heel and toe to engage the turf as the putter is placed downwardly on a golf green, and in a manner to stabilize the head against twist during said head downward placement,

c) said rail spaced rearwardly from said front face along the major length of the rail,

d) the rail having a depth which decreases toward at least one of the toe and heel.

2. The combination of claim 1 wherein the rail has a narrow bottom surface along the rail length, said surface being flat in a front to rear direction widthwise of the rail.

3. The combination of claim 2 wherein the rail has a frontward facing surface which tapers downwardly and rearwardly to merge with a forward extent of said rail bottom surface, and the rail also has a rearward facing surface which tapers downwardly and forwardly to merge with a rearward extent of said rail narrow surface.

4. The combination of claim 2 wherein said bottom surface has a substantially uniform width along the majority of the rail length, the rail extending lengthwise below the middle of the putter body between the heel and toe, and extending therefrom toward both the toe and heel.

5. The combination of claim 4 wherein said width is between 1/8 inch and 3/8 inch.

6. The combination of claim 1 wherein the rail defines a flat upright plane which extends between the toe and heel.

7. The combination of claim 6 wherein said flat bottom surface is downwardly convex along said length in a direction between the heel and toe.

8. The combination of claim 1 wherein the rail defines a curved upright plane which extends between the toe and heel, whereby the rail bottom surface is lengthwise curved to provide anti-tilt body support on the turf.

9. The combination of claim 8 wherein said rail flat bottom surface is downwardly convex along the said length in a direction between the heel and toe.

10. The combination of claim 9 wherein the body defines a shaft bore intersecting the rail, and a shaft extending downwardly in said bore and affixed thereto.

11. The combination of claim 10 wherein the rail is spaced rearwardly from said head front face, and said shaft extends upwardly from said bore, the shaft bore also intersecting the sole, and said sole also being downwardly convex along its length between the heel and toe, the rail having a depth which decreases toward the toe and toward the heel.

12. The combination of claim 9 wherein the body defines a shaft bore above the rail, and a shaft extending downwardly in said bore and affixed thereto.

13. The combination of claim 12 wherein the rail is spaced rearwardly from said head front face, and said shaft extends upwardly from said bore in spaced relation to the rail, the rail having a depth which decreases toward both toe and the heel.

14. The combination of claim 1 wherein the rail has a maximum projection of less than 1/4 inch below said sole bottom surface, along the rail length.

15. The combination of claim 1 wherein the putter body is metallic.

16. The combination of claim 15 wherein the putter body has L-shaped cross sections in upright planes normal to the length direction of the rail, the rail projecting below said L-shaped cross sections.

17. The combination of claim 1 including a putter shaft affixed to said body to project downwardly toward said rail.