US4236675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for producing stockpileable asphaltic concrete
Assignee: Individual
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Filing: 1977-09-19
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Granted: 1980-12-02
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Expires: 1997-09-19
Abstract
Abstract Hot-mix asphaltic concrete is fed from a supply hopper, located off-center above one end of a coolant tank containing a coolant bath, on to a rotating vaned projecting drum. Sheets of asphaltic concrete, the thickness of which are controlled by the clearance between the shearing edge of the supply hopper and the vaned projecting drum, are formed and projected above the coolant bath toward the opposite side of the coolant tank against a dispersing drum rotating in a direction opposite to that of the vaned projecting drum about an axis of rotation substantially parallel to that of the projecting drum. The sheets of asphaltic concrete are broken into particles and deflected through the coolant bath towards an endless conveyer. The particles, which are collected by the endless conveyer, are further cooled by the coolant bath as they are conveyed to the opposite end of the coolant tank and discharged.
Inventors
- 👤 Theodore S. Bladykas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:33
CPC Classifications
E; E01; E01C; E01C7/00; E01C7/08; E01C7/18; E01C7/187; E01C19/00; E01C19/02; E01C19/10; E01C23/00; E01C23/06
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
152 words
Apparatus for producing stockpileable asphaltic concrete from hot-mix asphaltic concrete, comprising: a coolant tank for containing a coolant bath: means for dispersing the hot-mix asphaltic concrete into the coolant tank which comprises: a supply hopper having an output port with a shearing edge; a vaned projecting drum rotatably mounted below the output port of the supply hopper so that at least a portion of the projecting drum is above the level of the coolant bath; a dispersing drum rotatably mounted and spaced from the vaned projecting drum so that at least a portion of the dispersing drum is above the level of the coolant bath and its axis of rotation is substantially parallel with the axis of rotation of the vaned projecting drum; and means for driving the vaned projecting drum and the dispersing drum in opposite rotational directions; and means for discharging the particles of asphaltic concrete from the coolant tank.
Claim 2
Dependent Claim
152 words
Apparatus for producing stockpileable asphaltic concrete from hot-mix asphaltic concrete, comprising: a coolant tank for containing a coolant bath: means for dispersing the hot-mix asphaltic concrete into the coolant tank which comprises: a supply hopper having an output port with a shearing edge; a vaned projecting drum rotatably mounted below the output port of the supply hopper so that at least a portion of the projecting drum is above the level of the coolant bath; a dispersing drum rotatably mounted and spaced from the vaned projecting drum so that at least a portion of the dispersing drum is above the level of the coolant bath and its axis of rotation is substantially parallel with the axis of rotation of the vaned projecting drum; and means for driving the vaned projecting drum and the dispersing drum in opposite rotational directions; and means for discharging the particles of asphaltic concrete from the coolant tank.
Claim 3
Dependent Claim
45 words
Apparatus for producing stockpileable asphaltic concrete from hot-mix asphaltic concrete in accordance with claim 1, wherein the shearing edge of the output port of the supply hopper is adjustable so as to permit the clearance between it and the vaned projecting drum to be varied.
Claim 4
Dependent Claim
41 words
Apparatus for producing stockpileable asphaltic concrete from hot-mix asphaltic concrete in accordance with claim 1, wherein the vaned projecting drum and the dispersing drum have substantially the same diameters and their axes of rotation are substantially in the same horizontal plane.
Claim 5
Dependent Claim
35 words
Apparatus for producing stockpileable asphaltic concrete from hot-mix asphaltic concrete in accordance with claim 1 wherein the drive means rotates the vaned projecting drum at a different angular speed than that of the dispersing drum.
Claim 6
Dependent Claim
27 words
Apparatus for producing stockpileable asphaltic concrete from hot-mix asphaltic concrete in accordance with claim 1 which further includes means for reducing the temperature of the coolant bath.
Claim 7
Dependent Claim
24 words
Apparatus fo producing stockpileable asphaltic concrete from hot-mix asphaltic concrete in accordance with claim 1 which further includes means for making the apparatus portable.
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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |