Patent US4674746A successfully refreshed from Google Patents.
US4674746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club
Assignee: Individual
•
Filing: 1984-03-27
•
Granted: 1987-06-23
•
Expires: 2004-03-27
Abstract
Abstract An improved golf club providing means for positioning the center of percussion in the head of each golf club so as to optimize the energy transfer between the club head and the golf ball and so as to optimize the feel of the golf shot for the golfer.
Inventors
- 👤 William R. Benoit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:07
CPC Classifications
A; A63; A63B; A63B60/00; A63B60/06; A63B60/22; A63B60/24
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
151 words
An improved golf club comprising in combination: a shaft having a first end and a second end; a grip nonmovably affixed to said first end of said shaft; a clubhead nonmovably attached to said second end of said shaft; a pivot point intermediate said first and second ends of said shaft, said pivot point being the point about which said golf club rotates when swung by a golfer and said pivot point normally being located closer to said first end than said second end; and means for positioning the center of percussion of said golf club anywhere within the volume of said clubhead, said means comprising a counterweight added to the interior of said shaft between said pivot point and said first end of said shaft, said counterweight having a unique predetermined value independent of weight added to or subtracted from said club at the location of said center of percussion.
Claim 2
Dependent Claim
151 words
An improved golf club comprising in combination: a shaft having a first end and a second end; a grip nonmovably affixed to said first end of said shaft; a clubhead nonmovably attached to said second end of said shaft; a pivot point intermediate said first and second ends of said shaft, said pivot point being the point about which said golf club rotates when swung by a golfer and said pivot point normally being located closer to said first end than said second end; and means for positioning the center of percussion of said golf club anywhere within the volume of said clubhead, said means comprising a counterweight added to the interior of said shaft between said pivot point and said first end of said shaft, said counterweight having a unique predetermined value independent of weight added to or subtracted from said club at the location of said center of percussion.
Claim 3
Dependent Claim
15 words
An improved golf club according to claim 1 wherein said counterweight is made of tungsten.
Claim 4
Dependent Claim
15 words
An improved golf club according to claim 1 wherein said counterweight is made of brass.
Claim 5
Dependent Claim
15 words
An improved golf club according to claim 1 wherein said counterweight is made of lead.
Claim 6
Dependent Claim
15 words
An improved golf club according to claim 1 wherein said counterweight is made of steel.
Claim 7
Dependent Claim
18 words
An improved golf club according to claim 1 wherein said counterweight is made of a metal matrix composite.
Claim 8
Dependent Claim
153 words
An improved golf club comprising in combination: a shaft having a first end and a second end; a grip nonmovably affixed to said first end of said shaft; a clubhead nonmovably attached to said second end of said shaft; a pivot point intermediate said first and second ends of said shaft, said pivot point being the point about which said golf club rotates when swung by a golfer and said pivot point normally being located closer to said first end than said second end; and means for positioning the center of percussion of said golf club anywhere within the volume of said clubhead, said means for positioning the center of percussion of said golf club in said clubhead comprising a counterweight concentric with and juxtaposed to said grip, said counterweight having a unique predetermined value independent of weight added to or substracted from said club at the location of said center of percussion.
Claim 9
Dependent Claim
153 words
An improved golf club comprising in combination: a shaft having a first end and a second end; a grip nonmovably affixed to said first end of said shaft; a clubhead nonmovably attached to said second end of said shaft; a pivot point intermediate said first and second ends of said shaft, said pivot point being the point about which said golf club rotates when swung by a golfer and said pivot point normally being located closer to said first end than said second end; and means for positioning the center of percussion of said golf club anywhere within the volume of said clubhead, said means for positioning the center of percussion of said golf club in said clubhead comprising a counterweight concentric with and juxtaposed to said grip, said counterweight having a unique predetermined value independent of weight added to or substracted from said club at the location of said center of percussion.
Claim 10
Dependent Claim
15 words
An improved golf club according to claim 7 wherein said counterweight is made of tungsten.
Claim 11
Dependent Claim
15 words
An improved golf club according to claim 7 wherein said counterweight is made of brass.
Claim 12
Dependent Claim
15 words
An improved golf club according to claim 7 wherein said counterweight is made of lead.
Claim 13
Dependent Claim
15 words
An improved golf club according to claim 7 wherein said counterweight is made of steel.
Claim 14
Dependent Claim
18 words
An improved golf club according to claim 7 wherein said counterweight is made of a metal matrix composite.
References Cited (Backward Citations)
US1304647A
Cited
US1026990A
Cited
US1210182A
Cited
US1585190A
Cited
US1658447A
Cited
US1676270A
Cited
US1696462A
Cited
US1982087A
Cited
US2066962A
Cited
US2051083A
Cited
AU17636A
Cited
US2782035A
Cited
US3608907A
Cited
US3606327A
Cited
US3873094A
Cited
US3841639A
Cited
US3863932A
Cited
US4058312A
Cited
US4165874A
Cited
US4123055A
Cited
US4280700A
Cited
US4461479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-22 | 1990-12-22 | 1991-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-22 | 1994-12-22 | 1995-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-22 | 1998-12-22 | 1999-06-23 | $7700.00 | Window Closed / Lapsed |