Perforated strip abrading element and abrading tool and method u

Details Perforated strip abrading element and abrading tool and method u Perforated strip abrading element and abrading tool and method u

1992-08-14

1994-03-22

Rachoba, M.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51334, 51337, B24D 1104

Patent

active

052953327

ABSTRACT:
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 such as shown in applicant's prior application Ser. No. 07/471,385 filed Jan. 29, 1990 entitled "Abrasive Tool and Method of Making", now U.S. Pat. No. 5,155,945. The present application also discloses 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.

REFERENCES:
patent: 1635350 (1927-07-01), Simons
patent: 2049324 (1936-07-01), Schneider
patent: 2447748 (1948-08-01), Graham
patent: 2642705 (1953-06-01), Jensen
patent: 2818691 (1958-01-01), Leggett
patent: 3053021 (1962-09-01), Block
patent: 3212219 (1965-10-01), Gillett

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