Patent US4953868A successfully refreshed from Google Patents.
US4953868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf swing training device
Assignee: Topgolf Callaway Brands Corp
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Filing: 1989-11-24
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Granted: 1990-09-04
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Expires: 2009-11-24
Abstract
Abstract A swing training device usable by a golfer comprises an elongated lightweight shaft adapted to be swung by a golfer to produce either a desirable accelerated or insufficiently accelerated swing, corresponding respectively to a desirably or insufficiently accelerated swing of a golf club, relative to a golf ball; and sound producing structure associated with the shaft to produce a distinctive audible sound when the shaft is swung so as to define a desirably accelerated swing.
Inventors
- 👤 Stanley C. Thompson
- 👤 Elmer R. Fredericks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:57
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3632; A63B69/3635
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
162 words
In a swing training device usable by a golfer, the combination comprising (a) an axially elongated lightweight tubular shaft adapted to be swung by a golfer to produce either a desirably accelerated or insufficiently accelerated swing, corresponding respectively to a desirably or insufficiently accelerated swing of a golf club, relative to a golf ball, the shaft having a longitudinal bore and an exterior surface, (b) the shaft having, and confined near one end thereof, through holes intersecting said bore and said exterior surface, to produce a distinctive audible sound when said lightweight shaft is swung so as to define a desirably accelerated swing, the holes spaced about said axis, (c) means for closing said one end of the tubular shaft, (d) and a golf club shaft section extending into the opposite end of the tubular shaft, remotely from said holes and being bonded to said bore, and a golf club grip on said golf club shaft section, exteriorly of said tubular shaft.
Claim 2
Dependent Claim
162 words
In a swing training device usable by a golfer, the combination comprising (a) an axially elongated lightweight tubular shaft adapted to be swung by a golfer to produce either a desirably accelerated or insufficiently accelerated swing, corresponding respectively to a desirably or insufficiently accelerated swing of a golf club, relative to a golf ball, the shaft having a longitudinal bore and an exterior surface, (b) the shaft having, and confined near one end thereof, through holes intersecting said bore and said exterior surface, to produce a distinctive audible sound when said lightweight shaft is swung so as to define a desirably accelerated swing, the holes spaced about said axis, (c) means for closing said one end of the tubular shaft, (d) and a golf club shaft section extending into the opposite end of the tubular shaft, remotely from said holes and being bonded to said bore, and a golf club grip on said golf club shaft section, exteriorly of said tubular shaft.
Claim 3
Dependent Claim
16 words
The device of claim 1 wherein said holes extend through opposite sides of the tubular portion.
Claim 4
Dependent Claim
15 words
The device of claim 1 wherein said holes are spaced apart lengthwise of the shaft.
Claim 5
Dependent Claim
13 words
The combination of claim 1 wherein said lightweight shaft consists of synthetic resin.
Claim 6
Dependent Claim
24 words
The combination of claim 1 wherein the shaft is upright, and including a cap on and closing the lowermost end of said tubular portion.
Claim 7
Dependent Claim
25 words
The combination of claim 5 wherein said holes include groups of holes spaced about an axis defined by the shaft at about 90 degree intervals.
Claim 8
Dependent Claim
18 words
The combination of claim 6 wherein the holes of each group are spaced apart lengthwise of the shaft.
Claim 9
Dependent Claim
18 words
The combination of claim 7 wherein the holes of successive groups, about the shaft axis, are staggered, axially.
Claim 10
Dependent Claim
26 words
The combination of claim 1 including a tubular closure cap fitting over and bonded to the tubular shaft, at said one end thereof, proximate said holes.
References Cited (Backward Citations)
US4116108A
Cited
US4283057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-03 | 1994-03-05 | 1994-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-03 | 1998-03-05 | 1998-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-03 | 2002-03-05 | 2002-09-04 | $7700.00 | Window Closed / Lapsed |