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:
Dec. 25, 1990
Filed:
Feb. 07, 1989
James B Williamson, Peyton, CO (US);
Other;
Abstract
This invention relates to a heavy duty commercial lawn edger apparatus utilized to achieve a new and novel contoured edge cut between adjacent portions of a grass area and a concrete or curb area. The lawn edger apparatus includes a main support base assembly directed by a main handle and control assembly and having a main power assembly mounted thereon. The main power assembly is connectable through a belt and pulley drive assembly to selectively drive a main edging and cleaner assembly. The main edging and cleaner assembly includes a heavy duty blade assembly; a main brush assembly mounted adjacent the main blade assembly for surface cleansing purposes; and an adaptor cutter assembly releasably connected to the main blade assembly to achieve unique shapes in the contoured edge cut. The main blade assembly includes a thick main blade member having spaced cut out sections to achieve a novel cutting feature of this invention. The adaptor cutter assembly includes various embodiments of a contour cutter assembly to achieve a right angular or contoured shape in the contoured edge cut and to sever the grass adjacent thereto. The main support base assembly includes a front guide wheel assembly which can be vertically and angularly adjustable to create a biasing effect of the main edging and cleaner assembly against a vertical surface of the concrete or curb member being edged. The main edging and cleaner assembly includes a cover shield assembly to enclose the rotating blade, brush, and cutter assemblies and operable to receive and direct the debris and cut grass rearwardly, laterally, and downwardly for a safety feature plus eliminating subsequent clean up operations for the lawn edger apparatus operator.