1975-08-01
1977-07-12
Aegerter, Richard E.
259 3, 259161, E01C 1910
Patent
active
040349683
ABSTRACT:
In a heating and mixing apparatus, particularly useful for asphalt-aggregate compositions and comprising an elongated drum having an interior cavity in which the composition is heated and mixed as the drum is rotated, an improvement comprises at least one and preferably a plurality of scoops secured exteriorly of the drum for picking up composition as the drum rotates and which composition is introduced gravitationally to the drum interior by a port communicating with the scoop. In another embodiment, at least one and preferably a plurality of ports are spaced along the drum exterior and communicating between the interior cavity and exterior of the drum and through which ports the heated and mixed composition is recovered. In still another embodiment at least one and preferably a plurality of ports communicating with the drum cavity and exterior are provided along the drum for venting water vapor removed from used asphalt-aggregate composition as it is heated to approximately the boiling point of water.
REFERENCES:
patent: 35469 (1862-06-01), Rand et al.
patent: 466882 (1892-01-01), Shettle
patent: 2715517 (1955-08-01), Bojner
patent: 2923538 (1960-02-01), Schoonover
patent: 3357689 (1967-12-01), Arnesen et al.
patent: 3544077 (1970-12-01), Van Elten
patent: 3614071 (1971-10-01), Brock
patent: 3832201 (1974-08-01), Shearer
patent: 3845941 (1974-11-01), Mendenhall
patent: 3866888 (1975-02-01), Dydzyk
Aegerter Richard E.
Seiler Jerry R.
Stearns Richard R.
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