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:
Mar. 07, 1978
Filed:
Jul. 08, 1976
Paul R Carlson, San Bernardino, CA (US);
Richard L Carlson, Yucaipa, CA (US);
Ground Hog, Inc., San Bernardino, CA (US);
Abstract
Quarter inch plate steel forms the bottom, front and rear walls of a U-shaped open sided saddle for mounting therewithin a 9 H.P. four cycle gasoline engine, the bottom of said saddle being clamped along its front edge to a 30 inch fixed axle on opposite ends of which are freely rotatable 14 inch diameter ballon tired wheels. Rectangularly rigidly connected to upper ends of said spaced rear and front engine saddle walls and continuing 46 inches forwardly therefrom is an inverted 4 inch square U-cross section sheet metal channel providing a drill supporting tongue for the tool while also housing a main shaft, the rear end of which journals in a self-aligning bearing fixed rockably on said rear engine saddle wall. Behind said wall said main shaft has a driven pulley fixed thereon which is belt driven from an engine shaft drive pulley when a manually controlled idler roller clutch means tightens the connecting belt. Rockably mounted on a transverse axis on the front end of said inverted channel shaft housing is a worm gear box, the short horizontal input shaft of which connects through a universal spline joint with the front end of said main shaft. The short vertical downward output shaft of said gear box is squared for readily connecting the same to an earth drill of selected length and diameter. A pair of handle bars equipped respectively with clutch and throttle controls is also mounted on the top of a front portion of said shaft housing. These bars are readily shiftable to any one of three optional positions for the convenience of the operator in various phases of earth drilling with the invention.