# US 5,704,851 A · Weighted putter

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 5,704,851 A
- Document ID: US5704851A
- Status: Granted
- Kind: A
- Application number: 08/692,799
- Filed: 1996-07-30
- Granted: 1998-01-06
- Earliest claimed: 1996-07-30
- Assignees: Chad Emarine
- Inventors: Joseph J. Lucetti
- Web page: https://patentgrep.com/patent/US5704851A

## CPC

- A63B 53/0487: {for putters (A63B53/065 takes precedence)}
- A63B 53/02: Joint structures between the head and the shaft
- A63B 60/00: Details or accessories of golf clubs, bats, rackets or the like
- A63B 60/02: Ballast means for adjusting the centre of mass (A63B60/24, A63B60/54 take precedence)
- A63B 53/0433: {with special sole configurations}
- A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H)

## Abstract

A golf putter has a pair of rails projecting downwardly from the sole of the head and oriented in the striking direction, thus raising the center of gravity of the head to the same level as the center of gravity of the ball and the striking point on the face of the putter.

## Claims

### Claim 1

A golf putter for use with a golf ball having a radius R and a center of gravity, said putter comprising a shaft and a striking head having an undersurface, and substantially vertical and flat front face;
said head further comprising at least one spacer member projecting downwardly from said under surface and extending to an horizontal ground plane, said head and spacer together having a center of gravity located within a striking plane parallel to said ground plane and spaced-apart thereof by a distance d, wherein d falls within a range extending approximately from R plus 3.0 millimeters to R minus 9.0 millimeters;
whereby when said putter strikes said golf ball resting over said ground plane, the center of gravity of the golf ball is substantially within said striking plane.

### Claim 2 (depends on 1)

The putter of claim 1, wherein said at least one spacer comprises an oblong body having a longitudinal axis perpendicular to said front face.

### Claim 3 (depends on 1)

The putter of claim 1, which further comprises at least two of said spacers.

### Claim 4 (depends on 3)

The putter of claim 3, wherein said oblong body has a forward lower surface tapering up to said undersurface.

### Claim 5 (depends on 4)

The putter of claim 4, wherein said oblong body has a substantially semi-circular median cross-section.

### Claim 6 (depends on 4)

The putter of claim 4, wherein said oblong body has a lower surface tapering up over substantially half of its length toward said undersurface.

### Claim 7

A golf putter for use with a golf ball having a radius R and a center of gravity, said putter comprising a shaft and a striking head comprising an undersurface having a lowermost point;
said head having a center of gravity located within a striking plane parallel to a ground plane and vertically spaced-apart from said lowermost point by a distance d, wherein d falls within a range extending approximately from R plus 3.0 millimeters to R minus 9.0 millimeters;
whereby when said putter strikes said golf ball resting over said ground plane, the center of gravity of the golf ball is substantially within said striking plane.