Patent US2234248A successfully refreshed from Google Patents.
Patent US4519612A successfully refreshed from Google Patents.
US4519612A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf putter
Assignee: Individual
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Filing: 1983-05-17
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Granted: 1985-05-28
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Expires: 2003-05-17
Abstract
Abstract A golf putter has a club head with a golfer's sighting device in the form of an elongated prism positioned at the top of the club head and aligned with the intended location of ball impact on the club head putting face. An elongated colored strip is disposed in or under the prism and appears maximally wide when viewed from above the prism in a vertical alignment plane which includes the impact spot and the upper edge of the prism, thereby indicating that the golfer's head is properly positioned over the club head. The indicator can be used during actual play and/or, in conjunction with a pivotable shaft, to select the optimal angle between the head and shaft in fabricating a custom putter. An aluminum or other oxide coating on the club head provides the putting face with a greater friction and facilitates adherence of a material having low friction characteristis, such as TEFLON, to the bottom surface of the club head. The edge between the putting face and bottom surface tapers upwardly toward opposite ends of the head from the general location of intended impact with the ball to reduce the likelihood of erratic putting strokes due to unevenly cut grass. The TEFLON coating reduces friction between the bottom surface of the putter and the grass to thereby further assure steady, even putting strokes.
Inventors
- 👤 Thomas K. Tsao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:26
CPC Classifications
A; A63; A63B; A63B53/00; A63B53/04; A63B53/0487; A63B53/02; A63B53/022; A63B53/023; A63B53/025; A63B53/0441; A63B69/00; A63B69/36; A63B69/3676; A63B69/3685; A63B53/0416; A63B53/0437
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
196 words
A golf putter including a club head comprising: a top surface; a bottom surface; proximal and distal ends; a forward-facing putting face extending lengthwise between said proximal and distal ends and extending depthwise between said top and bottom surfaces; wherein said putting face and said bottom surface intersect in a lengthwise-extending forward bottom edge of the club head; wherein said forward bottom edge includes a substantially straight intermediate segment spaced from both of said distal and proximal ends, and first and second straight end segments extending from opposite ends of said intermediate segment to said proximal and distal ends, respectively, said first and second end segments being mutually divergent depth-wise of said putting face in a direction toward said top surface; and wherein said bottom surface includes: a flat planar base portion extending lengthwise between said proximal and distal ends and extending widthwise to include said intermediate segment, said base portion having a length which is greater than said intermediate segment; a first recessed portion bounded by said first end segment, said proximal end and said base portion; and a second recessed portion bounded by said second end segment, said distal end and said base portion.
Claim 2
Dependent Claim
196 words
A golf putter including a club head comprising: a top surface; a bottom surface; proximal and distal ends; a forward-facing putting face extending lengthwise between said proximal and distal ends and extending depthwise between said top and bottom surfaces; wherein said putting face and said bottom surface intersect in a lengthwise-extending forward bottom edge of the club head; wherein said forward bottom edge includes a substantially straight intermediate segment spaced from both of said distal and proximal ends, and first and second straight end segments extending from opposite ends of said intermediate segment to said proximal and distal ends, respectively, said first and second end segments being mutually divergent depth-wise of said putting face in a direction toward said top surface; and wherein said bottom surface includes: a flat planar base portion extending lengthwise between said proximal and distal ends and extending widthwise to include said intermediate segment, said base portion having a length which is greater than said intermediate segment; a first recessed portion bounded by said first end segment, said proximal end and said base portion; and a second recessed portion bounded by said second end segment, said distal end and said base portion.
Claim 3
Dependent Claim
28 words
The golf putter according to claim 1 wherein said first and second recessed portions are respective flat planar areas of said bottom surface which intersect said base portion.
Claim 4
Dependent Claim
28 words
The golf putter according to claim 2 wherein said flat planar recessed portion areas are of substantially identical configuration and intersect said base portion at substantially identical angles.
Claim 5
Dependent Claim
13 words
The golf putter according to claim 3 wherein said angles are 2.5 degrees.
Claim 6
Dependent Claim
31 words
The golf putter according to claim 1 wherein said base portion of said bottom surface includes all of said bottom surface with the exception of said first and second recessed portions.
Claim 7
Dependent Claim
29 words
The golf putter according to claim 1 further comprising a club shaft secured to said club head at a location which is centered between said proximal and distal ends.
Claim 8
Dependent Claim
45 words
The golf putter according to claim 6 further comprising sighting means disposed on said top surface of said club head and centered longitudinally of said intermediate segment for facilitating alignment of a player's line of sight with a position centered lengthwise of said intermediate segment.
Claim 9
Dependent Claim
32 words
The golf putter according to claim 7 wherein said intermediate segment is substantially centered between said proximal and distal ends, and wherein said first and second end segments have substantially equal lengths.
Claim 10
Dependent Claim
36 words
The golf putter according to claim 8 further comprising weighting means for lowering the center of gravity of said club head, said weighting means comprising a plate of relatively heavy material disposed within said club head.
Claim 11
Dependent Claim
44 words
The golf putter according to claim 1 further comprising sighting means disposed on said top surface of said club head, centered longitudinally of said intermediate segment, for facilitating alignment of a player's line of sight with the position centered lengthwise of said intermediate segment.
Claim 12
Dependent Claim
33 words
The golf putter according to claim 1 further comprising means for lowering the center of gravity of said club head and including a plate of relatively heavy material disposed within said club head.
Claim 13
Dependent Claim
109 words
A golf putter comprising a club head having a bottom surface intersecting a forward-facing putting face to define a bottom edge, said club head having a length dimension defined between a proximal end and a distal end, said bottom surface having a lowermost flat portion with different lengths along said bottom surface, the shortest of said lengths being disposed at a straight intermediate segment of said bottom edge, wherein said bottom edge includes first and second straight end segments which are coplanar with and flank said intermediate segment, said end segments each sloping upward and away from said intermediate segment in respective opposite lengthwise directions along said club head.
Claim 14
Dependent Claim
109 words
A golf putter comprising a club head having a bottom surface intersecting a forward-facing putting face to define a bottom edge, said club head having a length dimension defined between a proximal end and a distal end, said bottom surface having a lowermost flat portion with different lengths along said bottom surface, the shortest of said lengths being disposed at a straight intermediate segment of said bottom edge, wherein said bottom edge includes first and second straight end segments which are coplanar with and flank said intermediate segment, said end segments each sloping upward and away from said intermediate segment in respective opposite lengthwise directions along said club head.
Claim 15
Dependent Claim
25 words
The golf putter according to claim 12 wherein said putter face includes an optimal ball-striking location which is centered with respect to said intermediate segment.
Claim 16
Dependent Claim
57 words
The golf putter according to claim 12 wherein said bottom surface includes first and second flat planar recessed portions, said first recessed portion being bounded by said first end segment, said proximal end segment and said base portion, wherein said second recessed portion is bounded by said second end segment, said distal end and said base portion.
Claim 17
Dependent Claim
29 words
The golf putter according to claim 12 further comprising a club shaft secured to said club head at a location which is centered between said proximal and distal ends.
Claim 18
Dependent Claim
45 words
The golf putter according to claim 12 further comprising sighting means disposed on said top surface of said club head and centered longitudinally of said intermediate segment for facilitating alignment of a player's line of sight in a position centered lengthwise of said intermediate segment.
Claim 19
Dependent Claim
36 words
The golf putter according to claim 12 further comprising weighting means for lowering the center of gravity of said club head, said weighting means comprising a plate of relatively heavy material disposed within said club 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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |