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US4439166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable water ski fin and wing
Assignee: Individual
•
Filing: 1981-09-21
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Granted: 1984-03-27
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Expires: 2001-09-21
Abstract
Abstract A water ski fin is carried by a housing mounted to the upper surface of the rear end of a ski with the fin extending downwardly through an elongated slot in the ski. The fin carries a transversely extending wing thereon and the combination is capable of being pivoted relative to the housing and ski to thereby change the angle of the wing. Movement is accomplished by a handle on one side of the housing which rotates a cam element which, in turn, engages an opening in the fin adjacent the top thereof. A locking device maintains the wing and fin in the desired position by preventing further movement of the cam element.
Inventors
- 👤 Ralph A. Maxwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:48
CPC Classifications
B; B63; B63B; B63B32/00; B63B32/60; B63B32/64; B63B32/20; B63B32/66
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
175 words
An adjustable water ski fin and wing assembly comprising: a shallow substantially rectangularly shaped mounting means, said mounting means being adapted to overlie an elongated longitudinally extending slot in the rear end of a water ski; means for securing said mounting means to the upper surface of said ski; a fin including a top edge lying substantially totally within said mounting means and extending downwardly therefrom through said slot; a pivot pin located adjacent said top edge of said fin for pivotally fastening said fin to said mounting means, said pin extending transversely of said mounting means; a wing extending outwardly from either side of said fin and substantially perpendicular thereto; means for manually pivoting said fin including a first cam element located within said mounting means and including a handle portion extending to the exterior of said mounting means and a second cam element carried by said fin adjacent one end of said top edge in cooperative relationship with said first cam element, and means for locking said fin to prevent pivotal movement thereof.
Claim 2
Dependent Claim
175 words
An adjustable water ski fin and wing assembly comprising: a shallow substantially rectangularly shaped mounting means, said mounting means being adapted to overlie an elongated longitudinally extending slot in the rear end of a water ski; means for securing said mounting means to the upper surface of said ski; a fin including a top edge lying substantially totally within said mounting means and extending downwardly therefrom through said slot; a pivot pin located adjacent said top edge of said fin for pivotally fastening said fin to said mounting means, said pin extending transversely of said mounting means; a wing extending outwardly from either side of said fin and substantially perpendicular thereto; means for manually pivoting said fin including a first cam element located within said mounting means and including a handle portion extending to the exterior of said mounting means and a second cam element carried by said fin adjacent one end of said top edge in cooperative relationship with said first cam element, and means for locking said fin to prevent pivotal movement thereof.
Claim 3
Dependent Claim
19 words
The invention as claimed in claim 1 wherein said locking means includes means for preventing movement of said handle.
Claim 4
Dependent Claim
20 words
The invention as claimed in claim 1 wherein said pivot pin is located adjacent the mid portion of said fin.
Claim 5
Dependent Claim
32 words
The invention as claimed in claim 1 wherein said first cam element is a substantially round member obliquely mounted on an axle, said axle extending to the exterior of said mounting means.
Claim 6
Dependent Claim
20 words
The invention as claimed in claim 4 wherein said means for locking includes means for preventing movement of said axle.
Claim 7
Dependent Claim
33 words
The invention as claimed in claim 4 wherein said second cam element is comprised of an opening within said fin, said round member of said first cam element being located within said opening.
Claim 8
Dependent Claim
19 words
The invention as claimed in claim 6 wherein the axes of said pivot and said axle are substantially parallel.
Claim 9
Dependent Claim
28 words
The invention as claimed in claim 1 wherein said fin is pivotally fastened by way of a fixed pivot pin which substantially prevents linear movement of said fin.
References Cited (Backward Citations)
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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) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |