The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 18, 1989
Filed:
Apr. 05, 1988
Yasuo Kajioka, Tokyo, JP;
Akira Okada, Tokyo, JP;
Tomio Komine, Tokyo, JP;
Satoru Shimizu, Tokyo, JP;
Shimizu Construction Company Limited, Tokyo, JP;
Abstract
The present invention provides a finishing machine for a concrete surface comprising a body which supports a plurality of rotatable trowels with a plurality of trowel blades through radial support members so that the trowels can revolve around the central axis of the body, the body being equipped further with a driving device of the rotatable trowels, a power generator and traveling rollers of the finishing machine which is placed just below the central axis, wherein the driving device of the rotatable trowels is a gasoline engine, and wherein each rotatable trowel is driven by a transmission shaft branched off from a gearbox. The angle between the surface of revolution of each rotatable trowel and the concrete surface is minutely changeable by an angle adjustment mechanism.