Patent US3675939A successfully refreshed from Google Patents.
US3675939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snowmobile ski and blade construction
Assignee: Dempco Inc
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Filing: 1970-03-02
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Granted: 1972-07-11
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Expires: 1990-03-02
Abstract
Abstract A blade for a snowmobile ski which consists of a narrow vertically disposed blade body adapted to be mounted on the longitudinal edge of a snowmobile ski in a position to depend downwardly. The forward portion of the blade curves upwardly to conform to the front of the ski. The blade is preferably provided with an integral horizontal web that is bolted or welded to the edge of the ski and lies in a abutting face to face relationship with the ski.
Inventors
- 👤 Albam M Vik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:48
CPC Classifications
B; B62; B62B; B62B17/00; B62B17/02; B62B17/04; B62M; B62M27/00; B62M27/02; B62M2027/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
142 words
A substantially straight snowmobile ski having a flat normally horizontally disposed elongated body formed from sheet material with an upwardly curved forward portion, a longitudinally extending drop center supporting surface extending longitudinally of the ski and having a lower surface substantially below the lower surface of the lateral edges of the ski body, at least one longitudinally extending vertically disposed blade member fixedly positioned in the vicinity of one lateral edge of the ski and depending downwardly therefrom, said blade extending forwardly to substantially the forward tip of the ski and rearwardly along a major portion of the length of said ski, and having a lower edge positioned at a higher elevation than the lower surface of the drop center portion, the forward portion of the blade being curved upwardly to conform to the front upwardly curved portion of the ski body.
Claim 2
Dependent Claim
142 words
A substantially straight snowmobile ski having a flat normally horizontally disposed elongated body formed from sheet material with an upwardly curved forward portion, a longitudinally extending drop center supporting surface extending longitudinally of the ski and having a lower surface substantially below the lower surface of the lateral edges of the ski body, at least one longitudinally extending vertically disposed blade member fixedly positioned in the vicinity of one lateral edge of the ski and depending downwardly therefrom, said blade extending forwardly to substantially the forward tip of the ski and rearwardly along a major portion of the length of said ski, and having a lower edge positioned at a higher elevation than the lower surface of the drop center portion, the forward portion of the blade being curved upwardly to conform to the front upwardly curved portion of the ski body.
Claim 3
Dependent Claim
59 words
The combination of claim 1 wherein a normally horizontally disposed web of sheet metal is integral with the blade body and extends at right angles thereto from the upward edge thereof toward the ski center, said web being adapted to be secured in face to face abutting relationship with the edge of the ski and thereby support the blade.
Claim 4
Dependent Claim
39 words
The snowmobile ski of claim 1 wherein said blade includes a horizontally disposed web integral with the vertically disposed blade, said web being rigidly affixed to the ski and being positioned in a face to face abutting relationship therewith.
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) | 1975-07-11 | 1976-01-10 | 1976-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-11 | 1980-01-10 | 1980-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-11 | 1984-01-10 | 1984-07-11 | $7700.00 | Window Closed / Lapsed |