Patent US3567123A successfully refreshed from Google Patents.
US3567123A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable road surfacing plant
Assignee: Individual
•
Filing: 1969-07-09
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Granted: 1971-03-02
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Expires: 1989-07-09
Abstract
Abstract A portable road-surfacing plant for storing, combining, mixing and applying at high temperatures predetermined proportions of asphalt and rubber.
Inventors
- 👤 Jack M Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:01
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/35; E01C7/358; E01C19/00; E01C19/46; E01C7/353
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
176 words
A portable road-surfacing plant comprising in combination: A. a frame; B. road wheels to transportably support the frame; C. a hot asphalt supply tank mounted on the frame; D. a rubber supply hopper mounted on the frame; E. a mixing tank mounted on the frame; F. a spray bar mounted on the rear end of the frame; G. a hot asphalt circulating pump connected to circulate hot asphalt through the hot asphalt supply tank and selectably connectable to discharge hot asphalt into an intermediate portion of the mixing tank; H. a screw conveyor on the frame arranged to receive discharge from the rubber supply hopper an delivery the rubber at one end of the mixing tank; I. a mixture pump on The frame connected to circulate mixture through the mixing tank having intake and discharge connections at the opposite end of the mixing tank from the screw conveyor delivery end of the mixing tank; and J. connections between the mixture pump discharge and the spray bar to supply mixture thereto for application to the road surface.
Claim 2
Dependent Claim
176 words
A portable road-surfacing plant comprising in combination: A. a frame; B. road wheels to transportably support the frame; C. a hot asphalt supply tank mounted on the frame; D. a rubber supply hopper mounted on the frame; E. a mixing tank mounted on the frame; F. a spray bar mounted on the rear end of the frame; G. a hot asphalt circulating pump connected to circulate hot asphalt through the hot asphalt supply tank and selectably connectable to discharge hot asphalt into an intermediate portion of the mixing tank; H. a screw conveyor on the frame arranged to receive discharge from the rubber supply hopper an delivery the rubber at one end of the mixing tank; I. a mixture pump on The frame connected to circulate mixture through the mixing tank having intake and discharge connections at the opposite end of the mixing tank from the screw conveyor delivery end of the mixing tank; and J. connections between the mixture pump discharge and the spray bar to supply mixture thereto for application to the road surface.
Claim 3
Dependent Claim
30 words
A portable road-surfacing plant as in claim 1 wherein a supplemental hot asphalt supply line is selectively connectable to the mixing tank from a remote external source of hot asphalt.
Claim 4
Dependent Claim
42 words
A portable road-surfacing plant as in claim 1 wherein rotatable mixer paddles are provided in the mixing tank and located between the intermediate hot asphalt discharge in the mixing tank and the mixture pump intake and discharge connections of the mixing tank.
References Cited (Backward Citations)
US2352749A
Cited
US3341128A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |