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US 5,170,593 AGranted
Method of making a perforated strip abrasive tool
AssigneeJason, Inc.
InventorsJames B. Tyler, Alfred F. Scheider, R. Brown Warner
Life of this patent
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AssigneeJason, Inc.
InventorsJames B. Tyler, Alfred F. Scheider, R. Brown Warner
Estimating the term…
An extruded plastic strip contains abrasive grains or minerals embedded homogeneously therein throughout is scored along the machine or extrusion axis direction, such scoring including elliptical or pointed perforations with the long axis or generally pointed ends aligned with the scoring and parallel to the machine or extrusion axis. The preferred plastic material is a 612 nylon, although other plastics may be employed. The material is heat workable, yet relatively stiff and can be used to form a wide variety of power driven abrasive tools. The present application also disclosed a rotary wheel type tool utilizing the perforated strip, and a method of making that tool using a gel type cyanoacrylate as an adhesive. With the strip of the present invention, rotary wheel tools as well as many other tools can economically be produced. In tool use, the strip fractures along the scoring and perforations to provide a tool having closely packed individual rectangular fingers, each with a major flat side facing the direction of rotation.
A method of making a wheel tool comprising the steps of providing an annular hub having side walls, a bottom and an annular radially extending channel formed thereby, providing the sidewalls with aligned equally circumferentially spaced axially extending divider holes near the outer edge, and providing at least one side wall with lateral openings near the bottom of the channel, said openings being positioned circumferentially between adjacent divider holes, the divider holes and openings dividing the hub into equal sectors,
A method of making a wheel tool comprising the steps of providing an annular channel shape hub, including side walls and a bottom, dividing the channel into equal sectors providing a lateral slot in a sidewall at the bottom of the channel for each sector, inserting a measured bundle of fill material radially into said channel in one of said sectors so that the inner end of the bundle is radially above the lateral slot, injecting a measured amount of gel form instant adhesive through said slot to fill the bottom of the channel beneath the inner end of the bundle, driving the bundle into the instant adhesive to secure the bundle within the channel as the adhesive cures, indexing the hub and repeating the process at the adjacent sector until the hub is filled.
Dependencies are inferred from the claim text.