Road structure – process – or apparatus – Apparatus – Tool rotating in horizontal plane
Patent
1997-01-15
1998-09-08
Graysay, Tamara L.
Road structure, process, or apparatus
Apparatus
Tool rotating in horizontal plane
E01C 1922
Patent
active
058036580
ABSTRACT:
In a powered riding trowel of the type having at least two adjacent rotor assemblies wherein said rotor assemblies include rotors which are counter rotating relative to one another, and wherein the rotors circumscribe a circular path during operation, the rotor assemblies being affixed to a framework such that the paths circumscribed by the rotors are spaced apart so that tangential forces developed along the circumference of the respective paths do not interact to reinforce one another.
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patent: 5685667 (1997-11-01), Allen
Allen Engineering Corp.
Carver Stephen D.
Graysay Tamara L.
Hartman Gary S.
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