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:
Sep. 01, 1998
Filed:
Feb. 27, 1995
Brent G Stephenson, Stillwater, OK (US);
Arthur D Deken, Perry, OK (US);
Cody L Sewell, Perry, OK (US);
The Charles Machine Works, Inc., Perry, OK (US);
Abstract
A directional boring machine equipped with a boring head comprising a blade assembly. The blade assembly may comprise a plurality of blades with deflecting surfaces. Alternately, the blade assembly has a single, stepped or serrated blade. The serrated blade assembly has a planar blade which is tapered in thickness and width from its base to its forward end. The forward end has teeth cut away on the backside to provide a recess or relief space for cuttings during the drilling process. A relief space or slot also is provided between the front two teeth for the same purpose. The blade is divided into two halves, and the halves are offset so that each of the teeth on each half provides a separate cutting point. The blade is angled in an upward direction relative to the base of the blade assembly to improve penetration and cutting actions. The blade assembly in combination with the boring head body provides exceptional cutting performance in a variety of soils and rock.