US4213613A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club head with center of gravity near its striking face
Assignee: Individual
•
Filing: 1977-12-29
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Granted: 1980-07-22
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Expires: 1997-12-29
Abstract
Abstract The golf club head has a metal face plate, vertically spaced horizontal fins extending rearwardly from the back side thereof, and a central vertical rib between each pair of fins. Weight-carrying inserts are threadedly mounted in the face plate and also extend rearwardly from the back side of the face plate. Molded about the fins, ribs and inserts is a plastic material in the form of rigid or structural foamed polyurethane.
Inventors
- 👤 Gordon W. Nygren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:02
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/045; A63B60/00; A63B60/52; A63B2053/0491; A63B2225/00; A63B2225/01; A63B53/0454; A63B53/0458
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
201 words
A golf club comprising a shaft, a metal face plate, the center line of said shaft residing in a first vertical plane disposed rearwardly from said face plate and generally parallel to said face plate, metal means extending rearwardly from the back side of said face plate and terminating at a location adjacent said vertical plane, the mass of said rearwardly extending metal means decreasing in opposite lateral directions from a centrally disposed vertical plane passing through said first plane and said face plate and also decreasing toward said face plate so that the center of gravity of said metal means resides between said first vertical plane and said face plate, the mass of said rearwardly extending metal means also decreasing in a vertical direction above and below a centrally disposed horizontal plane passing through said face plate so that the center of gravity of said metal means also resides generally in said horizontal plane, and relatively low density foamed plastic material encasing said rearwardly extending metal means to form an aerodynamically curved outer surface, said foamed plastic material having a center of gravity so that the overall center of gravity of said head resides substantially in said first vertical plane.
Claim 2
Dependent Claim
201 words
A golf club comprising a shaft, a metal face plate, the center line of said shaft residing in a first vertical plane disposed rearwardly from said face plate and generally parallel to said face plate, metal means extending rearwardly from the back side of said face plate and terminating at a location adjacent said vertical plane, the mass of said rearwardly extending metal means decreasing in opposite lateral directions from a centrally disposed vertical plane passing through said first plane and said face plate and also decreasing toward said face plate so that the center of gravity of said metal means resides between said first vertical plane and said face plate, the mass of said rearwardly extending metal means also decreasing in a vertical direction above and below a centrally disposed horizontal plane passing through said face plate so that the center of gravity of said metal means also resides generally in said horizontal plane, and relatively low density foamed plastic material encasing said rearwardly extending metal means to form an aerodynamically curved outer surface, said foamed plastic material having a center of gravity so that the overall center of gravity of said head resides substantially in said first vertical plane.
Claim 3
Dependent Claim
68 words
A golf club head comprising a metal face plate, a plurality of vertically spaced metal fins extending rearwardly from the back side of said face plate, the rear edges of said fins being horizontally curved and the uppermost and lowermost of said fins extending rearwardly a lesser distance than those fins in between, and relatively low density material encasing said fins to form an aerodynamically curved outer surface.
Claim 4
Dependent Claim
68 words
A golf club head comprising a metal face plate, a plurality of vertically spaced metal fins extending rearwardly from the back side of said face plate, the rear edges of said fins being horizontally curved and the uppermost and lowermost of said fins extending rearwardly a lesser distance than those fins in between, and relatively low density material encasing said fins to form an aerodynamically curved outer surface.
Claim 5
Dependent Claim
23 words
The golf club of claim 2 including a vertical rib extending rearwardly from the back side of said face plate between adjacent fins.
Claim 6
Dependent Claim
45 words
The golf club of claim 3 in which said in between fins include a central fin, a first pair of spaced fins between said uppermost fin and said central fin, and a second pair of spaced fins between said lowermost fin and said central fin.
Claim 7
Dependent Claim
35 words
The golf club of claim 4 in which said first and second pair of fins extend rearwardly a lesser distance than said central fin but rearwardly a greater distance than said uppermost and lowermost fins.
Claim 8
Dependent Claim
46 words
The golf club of claim 5 in which the fins of said first and second pairs which are nearer said central fin extend rearwardly a greater distance than do the remaining fins of said first and second pairs which are nearer said uppermost and lowermost fins.
Claim 9
Dependent Claim
27 words
The golf club head of claim 6 in which said face plate is thicker intermediate its upper and lower edges than at said upper and lower edges.
Claim 10
Dependent Claim
176 words
A golf club head comprising a metal face plate, a plurality of vertically spaced metal fins extending rearwardly from the back side of said face plate, relatively low density material encasing said fins to form an aerodynamically curved outer surface, two cup-shaped inserts each having an open end and a closed end, said face plate being formed with two counterbored holes therein, one of said holes being to one side of a centrally disposed vertical plane and the other to the other side of said plane, the counterbores of said holes being internally threaded and each insert having an externally threaded flange corresponding in thickness to the depth of the counterbore in which it is received so that the closed end of each insert is flush with the striking surface of said face plate, said threaded counterbores and said threaded flanges threadedly mounting said inserts in said face plate, weight means in at least one of said inserts, and a vertical rib disposed between each pair of fins, said ribs residing generally in said vertical plane.
Claim 11
Dependent Claim
176 words
A golf club head comprising a metal face plate, a plurality of vertically spaced metal fins extending rearwardly from the back side of said face plate, relatively low density material encasing said fins to form an aerodynamically curved outer surface, two cup-shaped inserts each having an open end and a closed end, said face plate being formed with two counterbored holes therein, one of said holes being to one side of a centrally disposed vertical plane and the other to the other side of said plane, the counterbores of said holes being internally threaded and each insert having an externally threaded flange corresponding in thickness to the depth of the counterbore in which it is received so that the closed end of each insert is flush with the striking surface of said face plate, said threaded counterbores and said threaded flanges threadedly mounting said inserts in said face plate, weight means in at least one of said inserts, and a vertical rib disposed between each pair of fins, said ribs residing generally in said vertical plane.
Claim 12
Dependent Claim
17 words
The golf club of claim 8 in which the rear edges of said fins are horizontally curved.
Claim 13
Dependent Claim
25 words
The golf club head of claim 8 in which the uppermost and lower most fins extend rearwardly a lesser distance than those fins in between.
Claim 14
Dependent Claim
24 words
The golf club head of claim 10 in which the rear edges of said ribs are coterminous with the rear edges of said fins.
Claim 15
Dependent Claim
120 words
A golf club head comprising a metal face plate, metal means extending rearwardly from the back side of said face plate, the mass of said rearwardly extending metal means decreasing in opposite lateral directions from a centrally disposed vertical plane passing through said face plate and said mass of said rearwardly extending metal means also decreasing in a vertical direction above and below a centrally disposed horizontal plane passing through said face plate, said rearwardly extending metal means including a plurality of vertically and equally spaced metal fins extending rearwardly from the back side of said face plate, those fins nearer said centrally disposed horizontal plane extending farther rearwardly than those fins spaced farther above said centrally disposed horizontal plane.
Claim 16
Dependent Claim
120 words
A golf club head comprising a metal face plate, metal means extending rearwardly from the back side of said face plate, the mass of said rearwardly extending metal means decreasing in opposite lateral directions from a centrally disposed vertical plane passing through said face plate and said mass of said rearwardly extending metal means also decreasing in a vertical direction above and below a centrally disposed horizontal plane passing through said face plate, said rearwardly extending metal means including a plurality of vertically and equally spaced metal fins extending rearwardly from the back side of said face plate, those fins nearer said centrally disposed horizontal plane extending farther rearwardly than those fins spaced farther above said centrally disposed horizontal plane.
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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) | 1983-07-22 | 1984-01-21 | 1984-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-22 | 1988-01-21 | 1988-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-22 | 1992-01-21 | 1992-07-22 | $7700.00 | Window Closed / Lapsed |