Patent US4872684A successfully refreshed from Google Patents.
US4872684A
Expired / Lapsed
US
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Golf putter
Assignee: PUTTEROUND Inc TUCSON AZ 85718 A CORP OF
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Filing: 1988-12-23
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Granted: 1989-10-10
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Expires: 2008-12-23
Abstract
Abstract A golf putter has a substantially cylindrical club head made from a tough, resilient, non-metallic plastic material such as acetal polymer (e.g., Delrin or Celcon); has weight-receiving receptacles recessed in each of the heel and toe ends; and weight inserts within the weight-receiving receptacles. The diameter of the cylindrical club head, e.g., one and one-quarter inches, is smaller than the diameter of a ball to be played. A visual alignment mark extends circumferentially partially around the cylindrical body at a position equidistant between the heel and toe ends and thus, just toward the toe end from the position at which a conventional shaft is coupled to the club head.
Inventors
- 👤 Stephanie A. Dippel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:42
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0487; A63B53/0433; A63B53/0437; A63B53/0441; A63B53/0458; Y; Y10; Y10S; Y10S273/00; Y10S273/11
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
146 words
A golf putter comprising: (A) a generally cylindrical club head, said club head including: 1. a main body portion fabricated from acetal resin, said main body portion having: a. a heel end and a toe end; b. a first weight-receiving receptacle recessed in said heel end; c. a second weight-receiving receptacle recessed in said toe end; and d. a shaft-end-receiving aperture extending from an outer periphery surface of said main body portion and terminating at a position within said main body portion; 2. a first weight insert residing in said first weight-receiving receptacle, said first weight insert being characterized as having a higher weight-per-volume ratio than said plastic material; and 3. a second weight insert residing in said second weight-receiving receptacle, said second weight insert being characterized as having a higher weight-per-volume ratio than said plastic material; (B) a shaft including: 1 a grip end; 2.
Claim 2
Dependent Claim
146 words
A golf putter comprising: (A) a generally cylindrical club head, said club head including: 1. a main body portion fabricated from acetal resin, said main body portion having: a. a heel end and a toe end; b. a first weight-receiving receptacle recessed in said heel end; c. a second weight-receiving receptacle recessed in said toe end; and d. a shaft-end-receiving aperture extending from an outer periphery surface of said main body portion and terminating at a position within said main body portion; 2. a first weight insert residing in said first weight-receiving receptacle, said first weight insert being characterized as having a higher weight-per-volume ratio than said plastic material; and 3. a second weight insert residing in said second weight-receiving receptacle, said second weight insert being characterized as having a higher weight-per-volume ratio than said plastic material; (B) a shaft including: 1 a grip end; 2.
Claim 3
Dependent Claim
42 words
an elongated intermediate section; and 3. a club head end, said club head end having a terminal portion dimensioned and configured to be closely received within said shaft-end-receiving aperture; and (C) joining means for securely fixing said terminal portion of said club
Claim 4
Dependent Claim
42 words
an elongated intermediate section; and 3. a club head end, said club head end having a terminal portion dimensioned and configured to be closely received within said shaft-end-receiving aperture; and (C) joining means for securely fixing said terminal portion of said club
Claim 5
Dependent Claim
36 words
head end of said shaft in said shaft-end-receiving aperture. 2. The golf putter of claim 1 in which the diameter of said club head is smaller than the diameter of the golf ball to be played.
Claim 6
Dependent Claim
31 words
The golf putter of claim 2 in which each of said first and second weight inserts are an interference fit to the respective one of said first and second weight-receiving receptacles.
Claim 7
Dependent Claim
17 words
The putter of claim 3 wherein the head has a diameter of about one and one-quarter inches.
Claim 8
Dependent Claim
27 words
The golf putter of claim 3 in which each of said first and second weight inserts is fabricated from the same material and has the same dimensions.
Claim 9
Dependent Claim
55 words
The putter of claim 5 wherein the head has a diameter of about one and one-quarter inches. 1. each of said weight-receiving receptacles is generally cylindrical and has the walls thereof internally threaded; and 2. each of said weight inserts is generally cylindrical and is externally threaded to threadedly engage one of said weight-receiving receptacles.
Claim 10
Dependent Claim
46 words
The golf putter of claim 2 in which: 1. each of said weight-receiving receptacles is generally cylindrical and has the walls thereof internally threaded; and 2. each of said weight inserts is generally cylindrical and is externally threaded to threadedly engage one of said weight-receiving receptacles.
Claim 11
Dependent Claim
27 words
The putter of claim 7 which further includes at least third and fourth weight inserts which are different in weight from said first and second weight inserts.
Claim 12
Dependent Claim
17 words
The putter of claim 7 wherein the head has a diameter of about one and one-quarter inches.
Claim 13
Dependent Claim
34 words
The putter of claim 2 which further includes a visual alignment mark extending circumferentially partially around said main body at a position equidistant between said heel and toe ends and proximate said shaft-end-receiving aperture.
Claim 14
Dependent Claim
17 words
The putter of claim 2 wherein the head has a diameter of about one and one-quarter inches.
Claim 15
Dependent Claim
31 words
The golf putter of claim 1 in which each of said first and second weight inserts are an interference fit to the respective one of said first and second weight-receiving receptacles.
Claim 16
Dependent Claim
27 words
The golf putter of claim 12 in which each of said first and second weight inserts is fabricated from the same material and has the same dimensions.
Claim 17
Dependent Claim
17 words
The putter of claim 13 wherein the head has a diameter of about one and one-quarter inches.
Claim 18
Dependent Claim
17 words
The putter of claim 12 wherein the head has a diameter of about one and one-quarter inches.
Claim 19
Dependent Claim
8 words
The golf putter of claim 1 in which:
Claim 20
Dependent Claim
27 words
The putter of claim 6 which further includes at least third and fourth weight inserts which are different in weight from said first and second weight inserts.
Claim 21
Dependent Claim
17 words
The putter of claim 17 wherein the head has a diameter of about one and one-quarter inches.
Claim 22
Dependent Claim
17 words
The putter of claim 6 wherein the head has a diameter of about one and one-quarter inches.
Claim 23
Dependent Claim
34 words
The putter of claim 1 which further includes a visual alignment mark extending circumferentially partially around said main body at a position equidistant between said heel and toe ends and proximate said shaft-end-receiving aperture.
References Cited (Backward Citations)
US1525137A
Cited
US2486952A
Cited
US2542081A
Cited
US2665909A
Cited
GB1008972A
Cited
GB1470768A
Cited
US4614627A
Cited
US4508342A
Cited
US4519612A
Cited
US4607846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |