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. 15, 1998
Filed:
Jul. 02, 1996
Randy E Benway, Horicon, WI (US);
Other;
Abstract
The present invention is an improved loose tenon joint with multiple arculate mortise surfaces and similarly configured loose tenon member for woodworking applications. A jig is provided arranged to be secured to a workpiece where the jig axially guides a drill bit for boring a series of adjoining holes forming a mortise. The first jig embodiment manipulates a slidable guide bar maintaining longitudinally spaced drill guide holes and two index holes. A hand held drill is used to bore a series of holes (fixtured by the drill guide holes) into the workpiece. A second series of holes are bored (completing the mortise) after the drill guide is translated and secured to the second index hole. A second embodiment is provided including a stationary jig body arranged to be secured to a workpiece. An elongated opening in the jig body supports a drill guide with longitudinally spaced drill guide holes. A hand held drill is used to bore a series of holes (fixtured by the drill guide holes) into the workpiece. The first drill guide is replaced by a second drill guide with preset hole spacing where a second series of holes are bored, completing the mortise. Both embodiments provide multiple guide holes for fast drilling with full drill bit contact area and preset hole spacing to produce a uniform and accurate mortise for a strong loose tenon joint system.