US4796892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf training and practice device
Assignee: Individual
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Filing: 1987-06-29
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Granted: 1989-01-10
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Expires: 2007-06-29
Abstract
Abstract A golf training and practice device has a base, an upwardly curving arm, and a two-piece sighting member. The base contains two fold-away spikes for stability when used on grass. The arm is attached to the base with an adjustable-friction ball and socket permitting movement in all directions. The sighting member consists of a lower (blade aligning) part having a clubhead line thereon, which is attached to the arm by a ball and socket, and into which is inserted an upper part having a swing path direction line, and an oval sighting aperture. The clubhead line is capable of being radially offset in increments from the swing direction line.
Inventors
- 👤 Leonard G. Doerrfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:30
CPC Classifications
A; A63; A63B; A63B69/00; A63B69/36; A63B69/3623; A63B69/3629; A63B71/00; A63B71/02; A63B71/023; A63B2071/024; A63B71/06; A63B2071/0694; A63B2225/00; A63B2225/09; A63B69/3621
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
159 words
A golf training and practice device for use by a golfer and a golf training instructor wherein said device includes: a. a base having a weight means secured thereto for stability; b. an arcuate arm extending in an upward curve from said base and movably attached to said base at a first end of said arm; c. a sighting-aiming member movably attached to said arm at a second end of said arm, said second end being oppositely disposed from said first end; d. said sighting-aiming member has an oval-shaped sighting aperture capable of providing a binocular view of a golf ball; e. said sighting-aiming member includes an upper part and a lower part; f. said upper part has a swing-path line on a longest portion thereof; g. said lower part has a club-alignment line on a breadth of said lower part; and h. said upper part includes a mating section to secure said upper part to said lower part.
Claim 2
Dependent Claim
159 words
A golf training and practice device for use by a golfer and a golf training instructor wherein said device includes: a. a base having a weight means secured thereto for stability; b. an arcuate arm extending in an upward curve from said base and movably attached to said base at a first end of said arm; c. a sighting-aiming member movably attached to said arm at a second end of said arm, said second end being oppositely disposed from said first end; d. said sighting-aiming member has an oval-shaped sighting aperture capable of providing a binocular view of a golf ball; e. said sighting-aiming member includes an upper part and a lower part; f. said upper part has a swing-path line on a longest portion thereof; g. said lower part has a club-alignment line on a breadth of said lower part; and h. said upper part includes a mating section to secure said upper part to said lower part.
Claim 3
Dependent Claim
39 words
The golf training and practice device of claim 1 wherein said arm is attached to said base at said first end by a base mechanism of the ball and socket type, thereby permitting movement and adjustment of said arm.
Claim 4
Dependent Claim
43 words
The golf training and practice device of claim 1 wherein said sighting-aiming member is attached to said arm at said second end by a sight mechanism of a sight ball and a sight socket, thereby permitting movement and adjustment of said sighting-aiming member.
Claim 5
Dependent Claim
36 words
The golf training and practice device of claim 3 wherein said mating section of said upper part provides a rotatable relation with said lower part, thereby permitting rotation of said upper part within said lower part.
Claim 6
Dependent Claim
54 words
The golf training and practice device of claim 4 wherein: a. said arm is attached to said base by a base ball and a base socket; b. said base ball is centrally located on an exterior portion of said base; and c. said base socket is situated in said first end of said arm.
Claim 7
Dependent Claim
33 words
The golf training and practice device of claim 5 wherein: a. said sight ball is part of said sighting-aiming member; b. said sight socket is situated at said second end of said arm.
Claim 8
Dependent Claim
34 words
The golf training and practice device of claim 1 wherein: a. said swing-path line is imprinted on said longest portion of said upper part; and b. said club-alignment line is imprinted on said breadth.
Claim 9
Dependent Claim
38 words
The golf training and practice device of claim 7 wherein a positioning means holds said upper part in a relationship with said lower part so that said swing-path line is at a right angle with said club-alignment line.
Claim 10
Dependent Claim
23 words
The golf training and practice device of claim 8 wherein said positioning means includes a plurality of slots to cooperate with a detent.
Claim 11
Dependent Claim
52 words
The golf training and practice device of claim 9 wherein said positioning means holds said upper part in a relationship with said lower part so that said swing-path line is at an angle with said club-alignment line to create a guide to follow in executing a draw shot or a fade shot.
Claim 12
Dependent Claim
77 words
The golf training and practice device of claim 10 wherein: a. said base socket and said sight socket are formed by a symmetrical clamp; b. said clamp includes an arm piece as a part of said arm at each end of said arm and a free piece; c. said free piece is removably secured to said arm piece; and d. said free piece and said arm piece combine to receive said base ball or said sight ball.
Claim 13
Dependent Claim
63 words
The golf training and practice device of claim 11 wherein: a. said base includes a hollow, cylindrical shell with a closed, flat side one end thereof; b. said base ball is centrally located on said closed flat side; c. said weight means is secured within said hollow cylindrical shell; and d. a retractable, ground penetrating means is secured adjacent to said weight means.
Claim 14
Dependent Claim
20 words
The golf training and practice device is claim 22 wherein said retractable ground pentrating means includes a pair of spikes.
Claim 15
Dependent Claim
93 words
The golf training and practice device of claim 1 wherein: a. a height along the vertical axis of said oval aperture is no less than seventy five percent of the diameter of said golf ball and no greater than one hundred two percent of the diameter of said golf ball; and b. a width along the horizontal axis of said oval aperture is no less than one hundred eight percent of the diameter of said golf ball and no greater than one hundred twenty five percent of the diameter of said golf ball.
Claim 16
Dependent Claim
90 words
The golf training and practice device of claim 14 wherein: a. said height along the vertical axis of said oval aperture is no less than eighty percent of the diameter of said golf ball and no greater than one hundred percent of the diameter of said golf ball; and b. a width along the horizontal axis of said oval aperture is no less than one hundred ten percent of the diameter of said golf ball and no greater than one hundred twenty percent of the diameter of said golf ball.
Claim 17
Dependent Claim
32 words
The golf training and practice device of claim 15 wherein: a. said lower part includes line bar having a substantially tangentially relation thereto; and b. said line bar includes said clubhead line.
Claim 18
Dependent Claim
105 words
The golf training and practice device of claim 1 wherein: a. said upper part includes a sighting flange and a lower mating section; b. said lower mating section of said upper part fits into said lower part; c. said sighting flange has a pointed end to indicate a desired direction for said golf ball and a blunt end diametrically opposed to said pointed end; d. an oval section is situated between said blunt end and said pointed end; e. an oval aperture is centrally located in said oval section; and f. a sighting line is centrally located on said blunt end and said pointed end.
Claim 19
Dependent Claim
17 words
The golf training and practice device of claim 17 wherein said arm is one-fourth of an ellipse.
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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) | 1992-01-10 | 1992-07-11 | 1993-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-10 | 1996-07-11 | 1997-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-10 | 2000-07-11 | 2001-01-10 | $7700.00 | Window Closed / Lapsed |