US3739859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snow leveler
Assignee: Individual
•
Filing: 1971-07-29
•
Granted: 1973-06-19
•
Expires: 1991-07-29
Abstract
Abstract A lightweight snow leveler for redefining snowmobile trails incorporating an elongated rectangular frame having front and rear traveling skis. The frame mounts a leading series of snow pulverizing discs and trailing cooperating sets of snow-shifting blades alternately rolling the pulverized snow inward, then outward and finally inward so as to provide a soft redefined trail.
Inventors
- 👤 L White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:28
CPC Classifications
E; E01; E01H; E01H4/00; E01H4/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
248 words
A snow leveler for packed snowmobile trails and the like, said leveler comprising a frame, skid means supporting said frame for travel over the surface of snow, a series of snow pulverizing discs rotatably mounted transversely across the forward portion of said frame for initial pulverizing engagement with the snow, said discs being generally vertically orientated in a front-torear direction, and three pairs of snow-turning blades mounted rearward of said discs for sequential engagement with the disc pulverized snow, the first pair of blades, immediately behind the discs, converging rearwardly from forward ends located adjacent the sides of the frame to rear inwardly converged ends, the second pair of blades commencing at converged forward ends immediately rearward of the converged rear ends of the first pair of blades and diverging rearwardly to terminate in rear laterally spaced ends, the third pair of blades converging rearwardly from forward ends positioned immediately outward of the diverged rear ends of the second pair of blades, said third pair of blades terminating in laterally spaced rear ends converged inwardly relative to the forward ends thereof, each blade including a substantially horizontal lower edge having a laterally turned or directed flange thereon for engagement beneath the disc pulverized snow, each blade, along the height tHereof from the lower edge, curving slightly laterally to provide a turn-ing effect to the snow engaged thereby, and each blade, along the length thereof, being of a progressively greater height from the forward end to the rear end.
Claim 2
Dependent Claim
248 words
A snow leveler for packed snowmobile trails and the like, said leveler comprising a frame, skid means supporting said frame for travel over the surface of snow, a series of snow pulverizing discs rotatably mounted transversely across the forward portion of said frame for initial pulverizing engagement with the snow, said discs being generally vertically orientated in a front-torear direction, and three pairs of snow-turning blades mounted rearward of said discs for sequential engagement with the disc pulverized snow, the first pair of blades, immediately behind the discs, converging rearwardly from forward ends located adjacent the sides of the frame to rear inwardly converged ends, the second pair of blades commencing at converged forward ends immediately rearward of the converged rear ends of the first pair of blades and diverging rearwardly to terminate in rear laterally spaced ends, the third pair of blades converging rearwardly from forward ends positioned immediately outward of the diverged rear ends of the second pair of blades, said third pair of blades terminating in laterally spaced rear ends converged inwardly relative to the forward ends thereof, each blade including a substantially horizontal lower edge having a laterally turned or directed flange thereon for engagement beneath the disc pulverized snow, each blade, along the height tHereof from the lower edge, curving slightly laterally to provide a turn-ing effect to the snow engaged thereby, and each blade, along the length thereof, being of a progressively greater height from the forward end to the rear end.
Claim 3
Dependent Claim
36 words
The leveler of claim 1 wherein said discs are provided in two laterally spaced sets, the discs of each set being orientated in a rearwardly and outwardly directed inclination relative to the length of the leveler.
Claim 4
Dependent Claim
25 words
The leveler of claim 2 wherein said skid means includes a pair of pivotally adjustable front skis depending from the forward end of said frame.
Claim 5
Dependent Claim
26 words
The leveler of claim 3 wherein said skid means also includes a pair of ski-like members fixed to the rear of said frame and depending therefrom.
Claim 6
Dependent Claim
187 words
A snow leveler for packed snowmobile trails and the like, said leveler comprising a frame, surface engaging support means supporting said frame for travel over the surface of snow, and three pairs of snow-turning blades mounted on said frame for sequential engagement with the snow, the first pair of blades converging rearwardly from forward ends located adjacent the sides of the frame to rear inwardly converged ends, the second pair of blades commencing at converged forward ends immediately rearward of the converged rear ends of the first pair of blades and diverging rearwardly to terminate in rear laterally spaced ends, the third pair of blades converging rearwardly from forward ends positioned immediately outward of the diverged rear ends of the second pair of blades, said third pair of blades terminating in laterally spaced rear ends converged inwardly relative to the forward ends thereof, each blade, along the height thereof from the lower edge, curving slightly laterally to provide a turning effect to the snow engaged thereby, and each blade, along the length thereof, being of a progressively greater height from the forward end to the rear end.
Claim 7
Dependent Claim
187 words
A snow leveler for packed snowmobile trails and the like, said leveler comprising a frame, surface engaging support means supporting said frame for travel over the surface of snow, and three pairs of snow-turning blades mounted on said frame for sequential engagement with the snow, the first pair of blades converging rearwardly from forward ends located adjacent the sides of the frame to rear inwardly converged ends, the second pair of blades commencing at converged forward ends immediately rearward of the converged rear ends of the first pair of blades and diverging rearwardly to terminate in rear laterally spaced ends, the third pair of blades converging rearwardly from forward ends positioned immediately outward of the diverged rear ends of the second pair of blades, said third pair of blades terminating in laterally spaced rear ends converged inwardly relative to the forward ends thereof, each blade, along the height thereof from the lower edge, curving slightly laterally to provide a turning effect to the snow engaged thereby, and each blade, along the length thereof, being of a progressively greater height from the forward end to the rear end.
Claim 8
Dependent Claim
29 words
The leveler of claim 12 including a plurality of snow pulverizing discs rotatably mounted transversely across the forward portion of the frame forward of the first pair of blades.
Claim 9
Dependent Claim
47 words
The leveler of claim 13 wherein said discs are provided in two laterally spaced sets, the discs of each set being orientated in a rear-wardly and outwardly directed inclination relative to the length of the leveler with the sets of discs rearwardly diverging relative to each other.
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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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |