Patent US3799565A successfully refreshed from Google Patents.
US3799565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recreation vehicle
Assignee: Individual
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Filing: 1972-05-23
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Granted: 1974-03-26
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Expires: 1992-05-23
Abstract
Abstract A recreation vehicle that may be selectively modified for use on land, water, or on a snow or ice-covered ground surface. The vehicle is adapted to have power means removably attached thereto as a source of motive power. The vehicle may be used on downwardly sloping land or snow or ice-covered surfaces without power means. The vehicle includes a seat-supporting frame assembly that is so operatively associated with a pivotally movable, forwardly disposed first means for movably engaging the supporting surface and laterally spaced second and third means that serve the same function, that as the vehicle is guided into a curved course the first, second and third means are moved in unison to tilted positions to obtain maximum tractive engagement with the supporting surface. When the vehicle is pursuing a straight course the first, second and third means are maintained in parallel relationship with one another. The power means used in driving the vehicle on a snow or ice-covered surface includes an externally cleated, endless, surface-engaging belt that extends longitudinally relative to the frame assembly, and is so supported from the frame assembly as to not tilt laterally thereto with said first, second and third means when the vehicle traverses a curved path. The first, second and third means when the vehicle is used on a snow or ice-covered surface are skis. When it is desired to use the invention on a body of water, the skis are replaced with pontoons. The vehicle may be used on land by replacing the skis with rotatably supported wheels. A poweroperated pump may be removably attached to the vehicle when it is supported on pontoons to propel it over a body of water.
Inventors
- 👤 W Burtis
- 👤 T Omori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:01
CPC Classifications
B; B62; B62B; B62B13/00; B62B13/02; B62B13/06; B62B13/08; B62B13/12; B62B13/18; B62K; B62K13/00; B62M; B62M29/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
351 words
A recreation vehicle capable of being steered by an operator in a desired course over a supporting surface, said device including: a. a frame assembly that includes at least one first elongate member having first and second ends, an upwardly extending cylindrical sleeve secured to said first end, a rigid upright secured to said second end, a transverse substantially horizontal leaf spring pivotally connected at substantially the center thereof to said upright by pivotal means, and a second elongate member disposed above said first member and having the ends thereof rigidly connected to said sleeve and an upper portion of said upright; b. manually operated guiding means disposed above said sleeve; c. a rod pivotally supported in said sleeve, said rod having a first upper end and a second lower end, said first end secured to said guiding means; d. first, second and third means for movably engaging said supporting surface; e. a pair of vertically extending, laterally spaced legs pivotally supported for transverse movement only from the ends of said spring, each of said legs having upper and lower ends; f. a pair of transverse struts pivotally connected to said upright and to said ends of said legs to pivot said legs in unison with the pivotal movement of said upright relative to said spring; g. fourth means for connecting said first means to said second end of said rod; h. fifth means for connecting said second and third means to said lower ends of said first and second legs; and i. a seat mounted on the upper rearward portion of saiD frame assembly for supporting a user of the device, with said user when he turns said guide means when said vehicle is moving causing said vehicle to traverse a curve into which said user leans due to forces imposed on said user, and as said user so leans he pivots said frame assembly transversely relative to said spring, with said struts, sleeve, rod, first means and said legs concurrently cooperating to tilt said first, second and third means laterally to the same degree as said frame assembly tilts.
Claim 2
Dependent Claim
351 words
A recreation vehicle capable of being steered by an operator in a desired course over a supporting surface, said device including: a. a frame assembly that includes at least one first elongate member having first and second ends, an upwardly extending cylindrical sleeve secured to said first end, a rigid upright secured to said second end, a transverse substantially horizontal leaf spring pivotally connected at substantially the center thereof to said upright by pivotal means, and a second elongate member disposed above said first member and having the ends thereof rigidly connected to said sleeve and an upper portion of said upright; b. manually operated guiding means disposed above said sleeve; c. a rod pivotally supported in said sleeve, said rod having a first upper end and a second lower end, said first end secured to said guiding means; d. first, second and third means for movably engaging said supporting surface; e. a pair of vertically extending, laterally spaced legs pivotally supported for transverse movement only from the ends of said spring, each of said legs having upper and lower ends; f. a pair of transverse struts pivotally connected to said upright and to said ends of said legs to pivot said legs in unison with the pivotal movement of said upright relative to said spring; g. fourth means for connecting said first means to said second end of said rod; h. fifth means for connecting said second and third means to said lower ends of said first and second legs; and i. a seat mounted on the upper rearward portion of saiD frame assembly for supporting a user of the device, with said user when he turns said guide means when said vehicle is moving causing said vehicle to traverse a curve into which said user leans due to forces imposed on said user, and as said user so leans he pivots said frame assembly transversely relative to said spring, with said struts, sleeve, rod, first means and said legs concurrently cooperating to tilt said first, second and third means laterally to the same degree as said frame assembly tilts.
Claim 3
Dependent Claim
79 words
A recreation vehicle as defined in claim 1 in which said first, second and third means are elongate skis, said surface is snow or ice, and said fourth and fifth means so connect said first, second and third skis to said rod and pair of legs that said skis may pivot independently in vertical planes as said vehicle travels over rough terrain, and said fifth means at all times maintaining said second and third skis parallel to one another.
Claim 4
Dependent Claim
93 words
A recreation vehicle as defined in claim 2 which in addition includes: j. a plurality of pairs of side plates disposed on opposite sides of said skis and extending therebelow; and k. sixth means for removably holding said side plates in fixed positions on said skis, with one of said side plates in each of said pairs biting into said snow or ice surface as said vehicle traverses a curve thereon and said skis tilt transversely, and said biting minimizing lateral sliding movement of said vehicle relative to said snow or ice surface.
Claim 5
Dependent Claim
76 words
A recreation vehicle as defined in claim 2 in which at least a portion of said skis are metal and each of which has a transversely curved concave lower surface, and said lower surface prtially defined by two transversely spaced, longitudinally extending ribs that form an integral part of the ski, and said ribs tending to minimize lateral slipping of said vehicle on said snow or ice surface when said vehicle traverses a curved path thereon.
Claim 6
Dependent Claim
40 words
A recreation vehicle as defined in claim 4 which in addition includes: j. a film of a polymerized resin that covers said concave lower surface to minimize the coefficient of friction between said skis and said now or ice surface.
Claim 7
Dependent Claim
17 words
A recreation vehicle as defined in claim 5 in which said polymerized resin is a fluoro-carbon resin.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |