Patent US5335918A successfully refreshed from Google Patents.
US5335918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Golf club swing training device
Assignee: Ace Trainer Inc
•
Filing: 1993-02-02
•
Granted: 1994-08-09
•
Expires: 2013-02-02
Abstract
Abstract A training airfoil attachment for a golf club wherein a member curved in cross-section and having a convex upper surface and a concave lower surface, and substantially straight leading and trailing edges, is attached to the shaft of the golf club to promote the correct swing due to the airflow over the airfoil imparting a lift on the convex side of the airfoil.
Inventors
- 👤 Thomas J. Rupnik
- 👤 Ron Kite
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:05
CPC Classifications
A; A63; A63B; A63B24/00; A63B24/0003; A63B69/00; A63B69/36; A63B69/3623; A63B69/3632; A63B71/00; A63B71/06; A63B71/0619; A63B71/0622; A63B2071/0625; A63B2071/0627; A63B2071/0633; A63B21/00; A63B21/008; A63B21/0085; A63B21/0088; A63B2225/00; A63B2225/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
76 words
A golf club including an airfoil attachment wherein said attachment comprises a member curved in cross-section and having a convex upper surface, a concave lower surface, and substantially straight leading and trailing edges, the trailing edge of said airfoil being connected to the shaft of said golf club and extending generally parallel thereto, to thereby promote a correct swing due to the airflow over the airfoil imparting a lift on the convex side of the airfoil.
Claim 2
Dependent Claim
76 words
A golf club including an airfoil attachment wherein said attachment comprises a member curved in cross-section and having a convex upper surface, a concave lower surface, and substantially straight leading and trailing edges, the trailing edge of said airfoil being connected to the shaft of said golf club and extending generally parallel thereto, to thereby promote a correct swing due to the airflow over the airfoil imparting a lift on the convex side of the airfoil.
Claim 3
Dependent Claim
35 words
A training airfoil according to claim 1, wherein the airfoil is connected to the shaft of the golf club by a pair of axially spaced clamps extending between the airfoil and the golf club shaft.
Claim 4
Dependent Claim
50 words
A training airfoil according to claim 1, wherein the airfoil is connected to the shaft of the golf club by a plurality of clamps integral with a spine member, said spine member extending along the length of said golf shaft, said clamps extending between said spine member and said airfoil.
Claim 5
Dependent Claim
17 words
A training airfoil according to claim 1, wherein the airfoil is formed integral with the golf shaft.
Claim 6
Dependent Claim
27 words
A training airfoil according to claim 1, wherein the airfoil is connected to the shaft of the golf club by a plurality of side squeeze snap fasteners.
Claim 7
Dependent Claim
24 words
A training airfoil according to claim 1, wherein the airfoil is dimensioned to extend substantially along the entire length of the golf club shaft.
Claim 8
Dependent Claim
32 words
A training airfoil according to claim 1, wherein the lower edge of the airfoil is contoured such that the bottom edge of the airfoil will clear the ground during the golfer's swing.
Claim 9
Dependent Claim
56 words
A training airfoil according to claim 1, wherein the airfoil is dimensioned to have a length substantially less than the length of the golf club shaft, whereby the position of the airfoil is adjustable along the length of the golf club shaft, to thereby vary the drag imparted to the golf club during the golfer's swing.
Claim 10
Dependent Claim
14 words
A training airfoil according to claim 1, wherein the airfoil is fabricated from plastic.
Claim 11
Dependent Claim
14 words
A training airfoil according to claim 1, wherein the airfoil is fabricated from metal.
Claim 12
Dependent Claim
14 words
A training airfoil according to claim 1, wherein the airfoil is fabricated from wood.
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) | 1997-08-08 | 1998-02-07 | 1998-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-08 | 2002-02-07 | 2002-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-08 | 2006-02-07 | 2006-08-09 | $7700.00 | Window Closed / Lapsed |