Patent US3685833A successfully refreshed from Google Patents.
US3685833A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf putting practice device
Assignee: Individual
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Filing: 1970-02-24
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Granted: 1972-08-22
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Expires: 1990-02-24
Abstract
Abstract The invention relates to a device for practising putting in the game of golf. It includes a channel having a ball-receiving station at one end and two spaced contact devices near the other end between which a golf club is swingable. The contact devices are connected electrically to a warning device so that if either is touched by a club swung between the contact devices the warning device is operated. Each contact device includes a rigid electrical conducting strip and a flexible strip of electrically conducting material held close to, but not touching, the rigid strip. Adjustment screws permit the distance between the contact devices to be varied.
Inventors
- 👤 William Jack Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:39
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3676; A63B69/3621; A63B69/36211; A63B71/00; A63B71/06; A63B2071/0694; A63B2225/00; A63B2225/09; A63B67/00; A63B67/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
163 words
A dEvice for practicing putting in the game of golf incorporating a channel positioning near one end a ball-receiving station simulating the cup of a normal green of a golf course, two contact devices disposed on opposite sides of the channel near the other end, each contact device comprising a rigid strip of electrically conducting material held adjacent a respective side of the channel and a flexible strip of electrically conducting material held close to but not touching the rigid strip, and each contact device extending along the channel a distance sufficient to cover the normal length of the swing of a club during the action of putting, and an electrically operated warning device having circuits in which the contact devices are separately connected, each contact device being operable when the flexible strip is distorted by pressure of the head of an incorrectly swung club and thereupon touches the rigid strip, to complete the associated circuit and set the warning device in operation.
Claim 2
Independent Claim
163 words
A dEvice for practicing putting in the game of golf incorporating a channel positioning near one end a ball-receiving station simulating the cup of a normal green of a golf course, two contact devices disposed on opposite sides of the channel near the other end, each contact device comprising a rigid strip of electrically conducting material held adjacent a respective side of the channel and a flexible strip of electrically conducting material held close to but not touching the rigid strip, and each contact device extending along the channel a distance sufficient to cover the normal length of the swing of a club during the action of putting, and an electrically operated warning device having circuits in which the contact devices are separately connected, each contact device being operable when the flexible strip is distorted by pressure of the head of an incorrectly swung club and thereupon touches the rigid strip, to complete the associated circuit and set the warning device in operation.
Claim 3
Dependent Claim
39 words
A device as claimed in claim 1 in which the flexible strip of each contact device is clipped over the ends of the associated rigid strip and insulating material is interposed between the flexible strip and the rigid strip.
Claim 4
Dependent Claim
36 words
A device as claimed in claim 1 incorporating means by which the contact devices are attached to the sides of the channel, said means being arranged to permit adjustment of the distance between the contact devices.
Claim 5
Dependent Claim
24 words
A device as claimed in claim 1 incorporating elevating means for elevating the end of the device at which the ball-receiving station is located.
Claim 6
Dependent Claim
17 words
A device as claimed in claim 1 incorporating elevating means for elevating one side of the device.
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) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |