US3863726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracked drive for vehicles
Assignee: Brien Roy E O
•
Filing: 1973-04-23
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Granted: 1975-02-04
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Expires: 1993-04-23
Abstract
Abstract A tracked drive is provided for mounting on the rear axle of a normally wheeled vehicle to convert the wheeled vehicle into a snowmobile-like vehicle.
Inventors
- 👤 Roy E O'brien
- 👤 Donald J Leslie
- 👤 Michael R Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:46
CPC Classifications
B; B62; B62D; B62D55/00; B62D55/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
109 words
A tracked drive for vehicles having a driven axle having a leaf spring structure connected thereto comprising an endless ground-engaging track, a housing operatively mounting said track, first sprocket means journaled in said housing operatively engaging the track for driving same, second sprocket means connectible to the axle to be driven thereby, means drivingly connecting said first and second sprocket means, and means for connecting the tracked drive to a vehicle, said means for connecting the tracked drive to a vehicle including additional leaf spring means connected to the housing, and structure for connecting said additional leaf spring means to the vehicle leaf spring means and vehicle driven axle.
Claim 2
Dependent Claim
109 words
A tracked drive for vehicles having a driven axle having a leaf spring structure connected thereto comprising an endless ground-engaging track, a housing operatively mounting said track, first sprocket means journaled in said housing operatively engaging the track for driving same, second sprocket means connectible to the axle to be driven thereby, means drivingly connecting said first and second sprocket means, and means for connecting the tracked drive to a vehicle, said means for connecting the tracked drive to a vehicle including additional leaf spring means connected to the housing, and structure for connecting said additional leaf spring means to the vehicle leaf spring means and vehicle driven axle.
Claim 3
Dependent Claim
43 words
A tracked drive as defined in claim 1, further characterized in the provision of second leaf spring means connected to the housing but spaced from said additional leaf spring means, and structure for connecting said second leaf spring means to the vehicle axle.
Claim 4
Dependent Claim
45 words
A tracked drive for vehicles as defined in claim 2, further characterized in that said additional leaf spring means and said second leaf spring means are each pivotally connected at one end to the housing and slidably connected at the other end to the housing.
Claim 5
Dependent Claim
28 words
A tracked drive for vehicles as defined in claim 1, further characterized in the provision of shock absorbing means connected to the housing and connectible to a vehicle.
Claim 6
Dependent Claim
22 words
A tracked drive as defined in claim 4, further characterized in that said shock absorbing means are provided centrally of the housing.
Claim 7
Dependent Claim
25 words
A tracked drive as defined in claim 4, further characterized in that said shock absorbing means are provided at the rearward end of the housing.
Claim 8
Dependent Claim
29 words
A tracked drive as defined in claim 4, further characterized in that said shock absorbing means are provided at both the center and the rearward end of the housing.
Claim 9
Dependent Claim
152 words
A tracked drive for vehicles having a driven axle with means at each end oF the axle for attachment of a wheel and having a pair of spaced apart leaf spring structures connected thereto comprising a tracked drive unit for each end of the axle, each drive unit comprising an endless ground-engaging track, a housing operatively mounting said track, first sprocket means journaled in said housing operatively engaging the track for driving same, second sprocket means connectible to the axle to be drive thereby, means drivingly connecting said first and second sprocket means, and means for connecting each tracked drive unit to the vehicle in driving engagement with one end of the vehicle axle, said means for connecting the track drive to a vehicle including additional leaf spring means connected to the housing, and structure for connecting said additional leaf spring means to the vehicle leaf spring means and vehicle driven axle.
Claim 10
Dependent Claim
152 words
A tracked drive for vehicles having a driven axle with means at each end oF the axle for attachment of a wheel and having a pair of spaced apart leaf spring structures connected thereto comprising a tracked drive unit for each end of the axle, each drive unit comprising an endless ground-engaging track, a housing operatively mounting said track, first sprocket means journaled in said housing operatively engaging the track for driving same, second sprocket means connectible to the axle to be drive thereby, means drivingly connecting said first and second sprocket means, and means for connecting each tracked drive unit to the vehicle in driving engagement with one end of the vehicle axle, said means for connecting the track drive to a vehicle including additional leaf spring means connected to the housing, and structure for connecting said additional leaf spring means to the vehicle leaf spring means and vehicle driven axle.
Claim 11
Dependent Claim
43 words
A tracked drive as defined in claim 8, further characterized in the provision of second leaf spring means connected to the housing but spaced from said additional leaf spring means, and structure for connecting said second leaf spring means to the vehicle axle.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |