Patent US4514361A successfully refreshed from Google Patents.
Patent US5036468A successfully refreshed from Google Patents.
US3575419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf swing practice club
Assignee: Individual
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Filing: 1969-05-21
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Granted: 1971-04-20
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Expires: 1989-05-21
Abstract
Abstract A golf swing practice club which has a linear shaft with a handle at one end and a weighted body at the other end. The body has an axial bore with a spring-biased plunger slidably mounted therein, the plunger having an annular groove therein for removably receiving a spring-biased ball detent for yieldingly holding the plunger in its initial or starting position. An anvil screw closes the outer end of the axial bore and a swinging of the club at a certain speed in a golf swing, will cause the plunger to move along the bore by centrifugal force and to strike the anvil screw with a loud click. The follow through portion of the golf swing will slow the speed of the club and permit the plunger spring to reset the plunger with a less loud click and the ball detent will yieldingly hold the plunger in its reset position ready for the next golf swing.
Inventors
- 👤 Wallace E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:12
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3632; A63B69/3635
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
215 words
In combination: a. a linear shaft having a handle at one end; b. a weighted body having an axial bore extending therethrough, the other end of said shaft having a threaded portion received in a threaded end portion of the bore; c. a plunger slidably mounted in the bore and the end of the shaft threaded portion acting as a reset stop for the plunger in sliding in one direction in the bore; d. an anvil screw closing the other end of the bore and acting as another stop for the plunger when it slides in the other direction; e. yielding means for holding said plunger in its reset position; and f. a reset spring for returning the plunger to its reset position; g. whereby a swinging of the shaft and body at a predetermined speed will cause centrifugal force to move the plunger in the bore to release the plunger holding means and permit the plunger to strike the anvil screw with a loud clicking sound, the slowing down of the swinging shaft reducing the centrifugal force to a point where the reset spring will return the plunger to its initial position where it will strike the reset stop and produce a fainter click, said yielding means holding the plunger in its reset position.
Claim 2
Dependent Claim
215 words
In combination: a. a linear shaft having a handle at one end; b. a weighted body having an axial bore extending therethrough, the other end of said shaft having a threaded portion received in a threaded end portion of the bore; c. a plunger slidably mounted in the bore and the end of the shaft threaded portion acting as a reset stop for the plunger in sliding in one direction in the bore; d. an anvil screw closing the other end of the bore and acting as another stop for the plunger when it slides in the other direction; e. yielding means for holding said plunger in its reset position; and f. a reset spring for returning the plunger to its reset position; g. whereby a swinging of the shaft and body at a predetermined speed will cause centrifugal force to move the plunger in the bore to release the plunger holding means and permit the plunger to strike the anvil screw with a loud clicking sound, the slowing down of the swinging shaft reducing the centrifugal force to a point where the reset spring will return the plunger to its initial position where it will strike the reset stop and produce a fainter click, said yielding means holding the plunger in its reset position.
Claim 3
Dependent Claim
50 words
The combination as set forth in claim 1: and in which said yielding means including an annular groove in the plunger and a spring-biased detent in said body yieldingly held in the plunger groove when the plunger is in reset position for normally holding the plunger in this reset position.
Claim 4
Dependent Claim
75 words
The combination as set forth in claim 1: and in which a. said weighted body having a plurality of radially extending sound-conveying bores leading from the axial bore to the outer surface of said body, the radial bores communicating with the axial bore at points adjacent to the inner end of the anvil screw; b. whereby the loud clicking sound made by the plunger striking the Anvil screw will be transmitted through the radial bores.
Claim 5
Dependent Claim
22 words
The combination as set forth in claim 3: and in which a rubber cover encloses the free end of said weighted body.
Claim 6
Dependent Claim
163 words
In a device of the type described: a. a body having an axial bore therein; b. a plunger slidably mounted in the bore; c. a first stop provided at one end of the bore and a second stop provided at the other end of the bore; and d. a plunger resetting spring placed in the bore and having one end bearing against the adjacent end of the plunger and its other end bearing against said first stop; said plunger being moved by centrifugal force when said body is swung in a certain direction, the plunger moving toward said first stop and compressing said spring, the plunger stopping its movement when striking said first stop and making a clicking sound; said spring returning said plunger to its reset position and striking said second stop when the moving body is reduced in speed and the force of the spring overcomes the centrifugal force, the plunger making a fainter clicking sound when striking said second stop.
Claim 7
Dependent Claim
163 words
In a device of the type described: a. a body having an axial bore therein; b. a plunger slidably mounted in the bore; c. a first stop provided at one end of the bore and a second stop provided at the other end of the bore; and d. a plunger resetting spring placed in the bore and having one end bearing against the adjacent end of the plunger and its other end bearing against said first stop; said plunger being moved by centrifugal force when said body is swung in a certain direction, the plunger moving toward said first stop and compressing said spring, the plunger stopping its movement when striking said first stop and making a clicking sound; said spring returning said plunger to its reset position and striking said second stop when the moving body is reduced in speed and the force of the spring overcomes the centrifugal force, the plunger making a fainter clicking sound when striking said second stop.
Claim 8
Dependent Claim
23 words
The combination as set forth in claim 5: and in which yielding means is provided for holding said plunger in its reset position.
Claim 9
Dependent Claim
70 words
The combination as set forth in claim 5: and in which a. said body having a plurality of radially extending sound-conveying bores leading from said axial bore to the outer surface of said body, said radial bores communicating with said axial bores at points adjacent to said first stop; b. whereby the clicking sound made by said plunger when striking said first stop will be transmitted through said sound-conveying bores.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |