US4719983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device and attendant equipment for converting a motor-scooter into a vehicle suitable for operating on snowy ground
Assignee: Individual
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Filing: 1986-12-08
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Granted: 1988-01-19
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Expires: 2006-12-08
Abstract
Abstract A device comprising a rear adapter frame with an idle crawler track and adapted to be mounted, together with a front steering skid, in lieu of the rear and front wheels, respectively, of a motor-scooter so as to enable a quick conversion thereof, when desired, into a vehicle suitable to travel on snowy ground.
Inventors
- 👤 Riccardo Bruzzone
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:39
CPC Classifications
B; B62; B62K; B62K13/00; B62M; B62M27/00; B62M27/02; B62M29/00; B62K2202/00; B62M2027/022
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
227 words
A device and attendant equipment for converting a motor scooter having a rear wheel and a front wheel into a vehicle suitable for operating in any direction and without altered center of gravity substantially comprising a rear crawler-mounting trolley with its drive reversing/reducing gearing mounted in lieu of the rear wheel and a steering skid mounted in lieu of the front wheel, said trolley comprising a cradle-like frame connectible to the normal fixing means of the existing engine and shock absorber of the scooter, said frame including two transverse spacer bars supporting a front fork and a rear fork, for mounting two idle wheels capable of movably guiding said crawler track while permitting limited lateral tiltability thereof and for swingably supporting a longitudinal bar mounting a plurality of pairs of smaller supporting wheels, said crawler track having a flat belt of rubberized fabric or the like and having affixed thereto a plurality of equally-spaced cross members or shoes made of metal angle bars, and provided with a central row of rectangular openings formed with a suitable pitch therebetween in the spaces between consecutive shoes to permit meshing engagement, on the outer side of said track, of a driving toothed wheel mounted on a suitable drum hub containing a crown-and-pinion reversing/reducing gearing to be mounted in lieu of the drum hub carrying the rear wheel of the vehicle.
Claim 2
Independent Claim
227 words
A device and attendant equipment for converting a motor scooter having a rear wheel and a front wheel into a vehicle suitable for operating in any direction and without altered center of gravity substantially comprising a rear crawler-mounting trolley with its drive reversing/reducing gearing mounted in lieu of the rear wheel and a steering skid mounted in lieu of the front wheel, said trolley comprising a cradle-like frame connectible to the normal fixing means of the existing engine and shock absorber of the scooter, said frame including two transverse spacer bars supporting a front fork and a rear fork, for mounting two idle wheels capable of movably guiding said crawler track while permitting limited lateral tiltability thereof and for swingably supporting a longitudinal bar mounting a plurality of pairs of smaller supporting wheels, said crawler track having a flat belt of rubberized fabric or the like and having affixed thereto a plurality of equally-spaced cross members or shoes made of metal angle bars, and provided with a central row of rectangular openings formed with a suitable pitch therebetween in the spaces between consecutive shoes to permit meshing engagement, on the outer side of said track, of a driving toothed wheel mounted on a suitable drum hub containing a crown-and-pinion reversing/reducing gearing to be mounted in lieu of the drum hub carrying the rear wheel of the vehicle.
Claim 3
Dependent Claim
88 words
A device according to claim 1, wherein the crawler track proper, mounted on a pair of idle wheels, is driven by a toothed wheel arranged exteriorly of the ring-like crawler track, and not interiorly thereof, so that said crawler track is allowed to become inclined, within certain limits, to the vertical plane of the vehicle, and wherein said exterior driving wheel is mounted on a drum hub which is arranged in lieu of the original hub for the rear wheel and has a reduced and reversed rotary motion.
Claim 4
Dependent Claim
37 words
A device according to claim 1, wherein pairs of blocks are arranged on the inner side of the crawler track in registry with the back side of said shoes, to enable transverse guidance of said crawler track.
Claim 5
Dependent Claim
39 words
A device according to claim 1, which further comprises a steering skid mounted in lieu of the front wheel, said skid comprising a ski-like member including a guiding bottom portion, a pependicular attachment plate and a spring-loaded stabilizing tierod.
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) | 1991-01-18 | 1991-07-20 | 1992-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-18 | 1995-07-20 | 1996-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-18 | 1999-07-20 | 2000-01-19 | $7700.00 | Window Closed / Lapsed |