US3845960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weight-balanced golfing iron
Assignee: Individual
•
Filing: 1973-06-11
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Granted: 1974-11-05
•
Expires: 1993-06-11
Abstract
Abstract The heads of a set of golfing irons are provided with weight balancing plugs and metal powder, during their production, to provide an accurately matched set. Two plugs are located in bore means in the head; one plug is elongated and less dense than the head metal; another plug is short and located at the heel end of the bore means; and the metal powder particles are confined between the plugs and have greater density than the head metal.
Inventors
- 👤 S Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:31
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/005; A63B53/047; A63B60/00; A63B53/0433
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
156 words
In a golf iron, a. a metallic club head having a toe and heel, a front face to strike a golf ball, a rear side, the head having an elongated base portion extending between the toe and heel, b. there being an elongated through opening extending within the base portion between the heel and toe, c. an elongated balancing plug extending within the opening, and d. a relatively short plug extending within the opening and spaced from the elongated plug for reception therebetween of a selected amount of weighting material in the form of metal particles having a density substantially greater than the density of the head metal, said elongated plug consisting of a metal substantially less dense than the head metal, e. said opening defined by bore means one portion of which receives the short plug at the heel end of the head, and the elongated plug retained in another portion of the bore means.
Claim 2
Dependent Claim
156 words
In a golf iron, a. a metallic club head having a toe and heel, a front face to strike a golf ball, a rear side, the head having an elongated base portion extending between the toe and heel, b. there being an elongated through opening extending within the base portion between the heel and toe, c. an elongated balancing plug extending within the opening, and d. a relatively short plug extending within the opening and spaced from the elongated plug for reception therebetween of a selected amount of weighting material in the form of metal particles having a density substantially greater than the density of the head metal, said elongated plug consisting of a metal substantially less dense than the head metal, e. said opening defined by bore means one portion of which receives the short plug at the heel end of the head, and the elongated plug retained in another portion of the bore means.
Claim 3
Dependent Claim
152 words
In a golf iron, a. a metallic club head having a toe and heel, a front face to strike a golf ball, a rear side, the head having an elongated base portion extending between the toe and heel, b. there being an elongated through opening extending within the base portion between the heel and the toe, c. an elongated balancing plug extending within the opening, and d. a relatively short plug extending within the opening And spaced from the elongated plug for reception therebetween of a selected amount of weighting material in the form of metal powder having a density substantially greater than the density of the head metal, said elongated plug consisting of a metal substantially less dense than the density of the head metal, e. said opening being defined by a bore receiving the short plug at the heel end of the head, and a counterbore receiving the elongated plug.
Claim 4
Dependent Claim
152 words
In a golf iron, a. a metallic club head having a toe and heel, a front face to strike a golf ball, a rear side, the head having an elongated base portion extending between the toe and heel, b. there being an elongated through opening extending within the base portion between the heel and the toe, c. an elongated balancing plug extending within the opening, and d. a relatively short plug extending within the opening And spaced from the elongated plug for reception therebetween of a selected amount of weighting material in the form of metal powder having a density substantially greater than the density of the head metal, said elongated plug consisting of a metal substantially less dense than the density of the head metal, e. said opening being defined by a bore receiving the short plug at the heel end of the head, and a counterbore receiving the elongated plug.
Claim 5
Dependent Claim
30 words
The golf iron of claim 2 including a retainer plug in the counterbore retaining the elongated plug in end-to-end relation with a counterbore shoulder formed between the bore and counterbore.
Claim 6
Dependent Claim
28 words
The golf iron of claim 2 wherein the base portion has a lower face which merges with the toe along a convexly curved surface intercepted by said counterbore.
Claim 7
Dependent Claim
23 words
The golf iron of claim 1 wherein the head rear face is inwardly recessed directly above said base portion containing said through opening.
Claim 8
Dependent Claim
25 words
The golf iron of claim 5 wherein the hosel includes an elongated stem to be attached to a club shaft, the stem containing a bore.
Claim 9
Dependent Claim
26 words
The golf iron of claim 2 including hardenable material filling the bore and counterbore at the ends thereof adjacent the toe and heel of the head.
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |