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US4688799A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club
Assignee: Individual
•
Filing: 1985-12-09
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Granted: 1987-08-25
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Expires: 2005-12-09
Abstract
Abstract A system for properly vertically positioning and stabilizing a golf club which may be utilized with either a putter or a driving wood wherein a rotatable circular roller is mounted on either the toe or the heel of the golf club and provides for proper vertical positioning and stabilization of the club face during either the putting or driving stroke with respect to the center of mass of the ball.
Inventors
- 👤 Kenneth W. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:11
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0437; A63B53/0441; A63B53/0466; A63B60/00; A63B69/00; A63B69/36; A63B69/3676; A63B69/3685; A63B53/0433
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
210 words
A golf club for striking a golf ball which is supported on or above a relatively smooth playing surface, e.g. on a putting green or on a driving tee, comprising: (a) a handle, (b) a ball-striking club head mounted at one end of said handle and having toe and heel ends adjacent the opposite ends of a ball-striking face and defining the horizontal axis of said head, (c) said club head having the center of mass thereof located in predetermined aligned vertically and horizontal relation with the center of said face to define the "sweet spot" of said face, (d) a roller having a fixed mounting on one of said club head ends which supports said roller for free rotation with respect to said club head, and (e) the diameter of said roller and the vertical location of said mounting thereof with respect to said club head being so predetermined that when the horizontal axis of said head is in a horizontal position and said roller is in contact with said playing surface at the instant of impart of said club head with a golf ball, the center of mass of said club head and said "sweet spot" are in horizontal alignment with the center of mass of said ball.
Claim 2
Dependent Claim
210 words
A golf club for striking a golf ball which is supported on or above a relatively smooth playing surface, e.g. on a putting green or on a driving tee, comprising: (a) a handle, (b) a ball-striking club head mounted at one end of said handle and having toe and heel ends adjacent the opposite ends of a ball-striking face and defining the horizontal axis of said head, (c) said club head having the center of mass thereof located in predetermined aligned vertically and horizontal relation with the center of said face to define the "sweet spot" of said face, (d) a roller having a fixed mounting on one of said club head ends which supports said roller for free rotation with respect to said club head, and (e) the diameter of said roller and the vertical location of said mounting thereof with respect to said club head being so predetermined that when the horizontal axis of said head is in a horizontal position and said roller is in contact with said playing surface at the instant of impart of said club head with a golf ball, the center of mass of said club head and said "sweet spot" are in horizontal alignment with the center of mass of said ball.
Claim 3
Dependent Claim
51 words
A golf club as defined in claim 1 wherein said club head is a putting head, said roller is of substantially the same diameter as a standard golf ball, and said mounting thereof positions the rotational axis thereof in substantially horizontal alignment with the center of mass of said club head.
Claim 4
Dependent Claim
59 words
A golf club is defined in claim 1 wherein said club head is a driving head, and the diameter of said roller and the vertical location thereof with respect to said club head are so predetermined that said roller extends below the bottom plane of said club head in vertically compensating relation with the height of a ball-supporting tee.
Claim 5
Dependent Claim
43 words
A driving golf club as defined in claim 3 wherein said rotatable mounting for said roller includes bracket means secured to one of said ends and the bottom surface of said club head, and axle means mounting said roller on said bracket means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |