Class 470/59 - Wooden screw

Subclass of Class 470 - Threaded, headed fastener, or washer making: process and apparatus
Definition: Subject matter wherein the fastener is composed of cellulose
No. of patents: 3
Last issue date: 05/06/2008

Number	Title	Issue Date
7367768	Deck screw and installation method for composite lumber A deck screw and an installation method is intended for use with composite lumber, although it can be used with other products. The deck screw may be provided with a head and a shaft that has two regions of varying diameter. The upper region has threads that exceed ...	05/06/2008
5611734	Apparatus for producing wooden threads An improved wood threader that utilizes an aluminum plate as a router mounting base to which a mounting block, that may conveniently be wood, is attached, and to which interchangeable, machined, high-performance plastic threader inserts are attached with ...	03/18/1997
4287627	Method and means for threading dowels A dowel threading device comprised of a conventional router having a horizontal base, a power means on the base, and a vertically disposed cutting bit extending downwardly and outwardly from the base. A dowel threading attachment is secured underneath the...	09/08/1981

PatentStorm