Road structure – process – or apparatus – Apparatus – Rotating drum – roller or tire
Patent
1978-04-03
1979-06-12
Byers, Jr., Nile C.
Road structure, process, or apparatus
Apparatus
Rotating drum, roller or tire
180 20, 299 40, 172395, 172518, 172580, 280 43, 404132, E01C 1926
Patent
active
041578775
ABSTRACT:
An apparatus for compacting subgrade and pavement materials during a road building operation, and which is characterized by the ability to selectively perform a plurality of distinct road rolling functions to thereby facilitate a road building operation. The apparatus is self-propelled and includes compacting means which comprises a pair of steel cylindrical rollers and two sets of rubber wheels having overlapping tracks. Provision is made for selectively moving the sets of rubber wheels into and out of operative engagement with the ground, whereby selective compaction by the independent operation of either the steel cylindrical rollers or the rubber wheels may be effected, and without simultaneous operation by the non-operating compacting means. A unitary steering system is also provided whereby the direction of the apparatus may be controlled when either compacting means is in operation.
REFERENCES:
patent: 2154720 (1939-04-01), Biles
patent: 2270390 (1942-01-01), Summers
patent: 2721405 (1955-10-01), Gardner
patent: 2830511 (1958-04-01), Wills
patent: 2978967 (1961-04-01), MacDonald
patent: 3228312 (1966-01-01), Neidhardt
patent: 3229602 (1966-01-01), Vivier
patent: 3340782 (1967-09-01), Novak
patent: 3477535 (1969-11-01), Wyatt
patent: 3665822 (1972-05-01), Speer
B.R. Lee Industries, Inc.
Byers Jr. Nile C.
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