US3556532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plastic golf club head with cavities therein to sound like a wooden club head
Assignee: Brunswick Corp
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Filing: 1968-08-02
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Granted: 1971-01-19
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Expires: 1988-08-02
Abstract
Abstract An impacting element characterized in that a plurality of cavities in a body are formed therein to give to the element a desired acoustical quality upon striking a solid object. The impacting element will have many uses but one important one will be in plastic golf club heads wherein it is desired to produce a head which will produce a desired sound upon impacting a golf ball.
Inventors
- 👤 James E Ballmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:25
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0466; A63B60/00; A63B53/0433; A63B60/50
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
99 words
A golf club head of plastic material molded into a configuration of a wood club head having a hosel portion with a hollow bore and a sole portion at the bottom thereof; said head having a plurality of cavities of different depths therein; each of said cavities resonating at a different frequency upon impact with a golf ball and being separated by substantially vertical walls; said walls differing in thickness and length, so that the frequencies generated within said cavities and walls will not amplify one another but will dampen each other rendering the club head substantially vibrationally dead.
Claim 2
Dependent Claim
99 words
A golf club head of plastic material molded into a configuration of a wood club head having a hosel portion with a hollow bore and a sole portion at the bottom thereof; said head having a plurality of cavities of different depths therein; each of said cavities resonating at a different frequency upon impact with a golf ball and being separated by substantially vertical walls; said walls differing in thickness and length, so that the frequencies generated within said cavities and walls will not amplify one another but will dampen each other rendering the club head substantially vibrationally dead.
Claim 3
Dependent Claim
15 words
A club head of claim 1 wherein the plurality of cavities therein differ in diameters.
Claim 4
Dependent Claim
28 words
The club head of claim 2 wherein a plurality of the cavities therein are elongated along an axis substantially perpendicular to the bottom face of the club head.
Claim 5
Dependent Claim
32 words
The club head of claim 3 further including a sole plate, and wherein the cavities therein open through the sole portion of the club head and are closed by said sole plate.
Claim 6
Dependent Claim
29 words
The club head of claim 1 wherein the cavities therein range in diameter from .250 inches to .315 inches and range in depth from .969 inches to 1.250 inches.
Claim 7
Dependent Claim
48 words
The club head of claim 5 wherein the centers of the cavities therein are spaced upon transverse axes at distances from the intersection of said axes varying from .110 inches to 1.872 inches on one and from .227 inches to 1.314 inches on the other of said axes.
Claim 8
Dependent Claim
100 words
A golf club head of plastic material, molded into a configuration of a wood-type club head; said club head having a bottom face and a plurality of bores therein of differing depth and diameter communicating with said bottom face; said bores being substantially perpendicular to said bottom face and so positioned upon the bottom face that the walls therebetween differ in length and thickness; and a sole plate covering the opening openings of the bores in the bottom face of said head, whereby when hit; said club head produces a sound substantially identical to a club head made of wood.
Claim 9
Dependent Claim
100 words
A golf club head of plastic material, molded into a configuration of a wood-type club head; said club head having a bottom face and a plurality of bores therein of differing depth and diameter communicating with said bottom face; said bores being substantially perpendicular to said bottom face and so positioned upon the bottom face that the walls therebetween differ in length and thickness; and a sole plate covering the opening openings of the bores in the bottom face of said head, whereby when hit; said club head produces a sound substantially identical to a club head made of wood.
References Cited (Backward Citations)
CA642134A
Cited
US1592463A
Cited
US1854548A
Cited
GB380260A
Cited
US2067556A
Cited
US2460435A
Cited
US3044777A
Cited
US3468544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |