US3563329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle tractor unit
Assignee: CLARK MICHIGAN COMPANY CIRCLE DRIVE BUCHMANAN MICHIGAN A CORP OF
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Filing: 1968-03-22
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Granted: 1971-02-16
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Expires: 1988-03-22
Abstract
Abstract A tractor unit for connection to an implement unit to form a complete vehicle, the tractor unit having a kody prrtion, a pair of drive e wheels, a connection portion pivotally connected to the body portion, and a pair of retractable auxiliary wheels mounted on the connection portion for use in maneuvering the tractor unit into position for coupling it to an implement unit.
Inventors
- 👤 Vincent Licari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:18
CPC Classifications
B; B62; B62D; B62D53/00; B62D49/00; B62D49/02; E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/80; E02F3/96; E02F9/00; E02F9/08; E02F9/0841
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
122 words
A tractor unit for a vehicle comprising a body portion, a pair of drive wheels supporting said body portion, a connection portion located at one end of said body portion and pivotally connected about a vertically disposed axis to the body portion, a pair or of retractable auxiliary wheels mounted on the said connection portion, the said retractable auxiliary wheels beinG individually infinitely adjustable between fully extended and fully retracted positions, two alignment devices on the said connection portion for use in aligning the tractor unit with an implement unit prior to connection thereto, one of the said two alignment devices being hollow and containing a portion of a drive shaft for transmitting power between the tractor unit and the implement unit.
Claim 2
Dependent Claim
122 words
A tractor unit for a vehicle comprising a body portion, a pair of drive wheels supporting said body portion, a connection portion located at one end of said body portion and pivotally connected about a vertically disposed axis to the body portion, a pair or of retractable auxiliary wheels mounted on the said connection portion, the said retractable auxiliary wheels beinG individually infinitely adjustable between fully extended and fully retracted positions, two alignment devices on the said connection portion for use in aligning the tractor unit with an implement unit prior to connection thereto, one of the said two alignment devices being hollow and containing a portion of a drive shaft for transmitting power between the tractor unit and the implement unit.
Claim 3
Dependent Claim
111 words
A vehicle comprising a tractor unit detachably connected to an implement unit, the tractor unit comprising a body portion, a pair of drive wheels supporting said body portion, a connection portion located at one end of said body portion and pivotally connected about a vertically disposed axis to the body portion, and a pair of retractable auxiliary wheels mounted on the said first connection portion, the implement unit comprising a pair of wheels and a second connection portion connected to the said first connection portion, the said first and second connection portions having aligned openings therethrough, and a drive shaft extending through the said openings for connection to said implement unit.
Claim 4
Dependent Claim
111 words
A vehicle comprising a tractor unit detachably connected to an implement unit, the tractor unit comprising a body portion, a pair of drive wheels supporting said body portion, a connection portion located at one end of said body portion and pivotally connected about a vertically disposed axis to the body portion, and a pair of retractable auxiliary wheels mounted on the said first connection portion, the implement unit comprising a pair of wheels and a second connection portion connected to the said first connection portion, the said first and second connection portions having aligned openings therethrough, and a drive shaft extending through the said openings for connection to said implement unit.
Claim 5
Dependent Claim
41 words
A vehicle as specified in claim 2 in which the said first connection portion comprises a connection plate with an outwardly extending pilot projection thereon, and the said second connection portion includes a mating opening for receiving the said pilot projection.
Claim 6
Dependent Claim
72 words
A vehicle as specified in claim 2 in which the said first connection portion comprises a connection plate with a pair of outwardly projecting pilot projections thereon, the said second connection portion includes a pair of mating opening for receiving the said pilot projections respectively, and one of the said pilot projections is hollow and together with one of said mating openings, constituting said aligned openings through which said drive shaft extends.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |