US3750777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Propulsion unit for skier
Assignee: Individual
•
Filing: 1972-04-07
•
Granted: 1973-08-07
•
Expires: 1992-04-07
Abstract
Abstract A cleated roller is provided including an internal combustion engine mounted on a frame connected through the roller hub to one of two handles. The handles are connected in parallel relation and extend on opposite sides of the roller. Means extending between the handles near the free ends thereof are adapted to engage the posterior of a skier to push him over the snow covered surface.
Inventors
- 👤 R Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:24
CPC Classifications
B; B62; B62M; B62M27/00; B62M27/02; A; A63; A63C; A63C5/00; A63C5/08; A63C5/085; B62D; B62D51/00; B62D51/04; B62D51/06; B62D51/065; B62M2027/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
126 words
A propulsion unit for skiers and the like including: a hollow cylindrical cleated roller including end walls, hollow hubs extending into said end walls from opposite end thereof, handles secured to the outer ends of said hubs, an engine frame supported by said hubs and secured from rotation relative to one of said hubs and the handle secured thereto, the end wall encircling said one hub being rotatable relative thereto, said engine frame being rotatable relative to the other of said hubs, an engine having a power shaft supported within said roller upon said engine frame, said power shaft is connected to the end wall of said roller encircling the other of said hubs to drive the same, means connecting said power shaft to the roller.
Claim 2
Dependent Claim
126 words
A propulsion unit for skiers and the like including: a hollow cylindrical cleated roller including end walls, hollow hubs extending into said end walls from opposite end thereof, handles secured to the outer ends of said hubs, an engine frame supported by said hubs and secured from rotation relative to one of said hubs and the handle secured thereto, the end wall encircling said one hub being rotatable relative thereto, said engine frame being rotatable relative to the other of said hubs, an engine having a power shaft supported within said roller upon said engine frame, said power shaft is connected to the end wall of said roller encircling the other of said hubs to drive the same, means connecting said power shaft to the roller.
Claim 3
Dependent Claim
17 words
The structure of claim 1 and in which said means connecting said power source includes a clutch.
Claim 4
Dependent Claim
15 words
The structure of claim 2 and in which said clutch comprises a centrifugally operable clutch.
Claim 5
Dependent Claim
47 words
The structure of claim 1 and in which at least the handle connected to said one hub is tubular and includes a passage which communicates with the interior of said one hub, and including an engine control extending through said last named handle and said one hub.
Claim 6
Dependent Claim
17 words
The structure of claim 4 and in which said engine control is connected to the engine throttle.
Claim 7
Dependent Claim
21 words
The structure of claim 1 and including means connecting said handles and adapted to engage with the posterior of a skier.
Claim 8
Dependent Claim
30 words
The structure of claim 1 and in which said connecting means includes a torque cylinder having louvers therein which act as a fan to draw air through said other hub.
Claim 9
Dependent Claim
24 words
The structure of claim 7 and including a collector ring encircling said torque cylinder and a conduit connecting said collector ring to said engine.
Claim 10
Dependent Claim
21 words
The structure of claim 1 and in which said roller includes an access door forming a segment of said cylindrical roller.
Claim 11
Dependent Claim
72 words
The structure of claim 1 and in which said connecting means includes a torque cylinder secured to the end wall encircling said other hub, a shaft connected to said torque cylinder and concentric with said roller, and expandable pulley mounted on said last named shaft, a centrifugal clutch connected to said engine power shaft, an expandable pulley on said power shaft actuated by said clutch, and a belt connecting said expandable pulleys.
Claim 12
Dependent Claim
19 words
The structure of claim 1 and including a hitch connected to said hubs and extending rearwardly from said roller.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |