Patent US3844671A successfully refreshed from Google Patents.
US3844671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrally articulated compound road construction yard machine with orientable auxiliary element
Assignee: Individual
•
Filing: 1973-08-16
•
Granted: 1974-10-29
•
Expires: 1993-08-16
Abstract
Abstract A compound road construction yard machine comprising at least a tractor unit, a central articulated joint for steering and another work unit; for example, an earth compacting unit with vibrating drum or pneumatic wheels, characterized in that the two units comprise therebetween, besides the conventional joint, at least an auxiliary orientable element provided with a disassemblable supporting member. It comprises a device to be applied to centrally articulated machines for rapidly and easily separating the two units thereof and forming then readily other combinations of units on the road construction yard itself.
Inventors
- 👤 D Domenighetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:56
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/22; E01C19/23; E01C19/231; E01C19/233; B; B62; B62D; B62D53/00; B62D53/02; E01C19/27
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
157 words
A compound road construction machine comprising a tractor unit, a work unit, an auxiliary orientable member connected for rotation relative to said tractor unit about a vertical axis, means for swinging said auxiliary member about said vertical axis, said auxiliary member having a vertical first flange surface on the side thereof opposite said tractor unit, said work unit having a vertical second flange surface thereon detachably interconnected to said first flange surface whereby said work unit is detachably secured to said tractor unit for rotation relative to said tractor unit about said vertical axis, said auxiliary member having a horizontal third flange surface disposed at the lower end of said first flange surface and extending toward said tractor unit from the lower edge of said first flange surface, an element having a horizontal fourth flange surface detachably secured to said third flange surface beneath said third flange surface, and wheels carried by and disposed beneath said element.
Claim 2
Dependent Claim
157 words
A compound road construction machine comprising a tractor unit, a work unit, an auxiliary orientable member connected for rotation relative to said tractor unit about a vertical axis, means for swinging said auxiliary member about said vertical axis, said auxiliary member having a vertical first flange surface on the side thereof opposite said tractor unit, said work unit having a vertical second flange surface thereon detachably interconnected to said first flange surface whereby said work unit is detachably secured to said tractor unit for rotation relative to said tractor unit about said vertical axis, said auxiliary member having a horizontal third flange surface disposed at the lower end of said first flange surface and extending toward said tractor unit from the lower edge of said first flange surface, an element having a horizontal fourth flange surface detachably secured to said third flange surface beneath said third flange surface, and wheels carried by and disposed beneath said element.
Claim 3
Dependent Claim
55 words
A machine as claimed in claim 1, said work unit comprising a vibrating roller, a connecting bar extending from said roller toward said tractor unit, and a connecting element disposed between and interconnecting said second flange surface and said horizontal bar and supporting the end of said horizontal bar which is nearest said tractor unit.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |