Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1988-05-31
1990-01-02
Olszewski, Robert P.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51358, 51378, 15144A, 464 51, 464106, 464185, B24B 4500
Patent
active
048904228
ABSTRACT:
This invention relates to an abrasive tool for grinding and polishing. A disk, which may consist of an abrasive disk or may carry a buffing pad consisting of an abrasive-containing woven fabric, is connected to a shaft that is adapted to be gripped by a driving chuck of a hand-held drilling machine or a hobbyist's machine. The shaft comprises a flexible shaft section and the tool is provided with means for reliably stiffening the shaft even during an operation at high speed and under stong abrasive forces. Besides, the tool should be usable as a grinding tool having a smaller grinding surface. An end flange is screwed to a first rigid shaft section and is disposed on the front face of the disk. A bowl which has a smaller radius than the disk is disposed on the rear of the disk. A fixing member provided with said bowl comprises a core sleeve, which has internal screw threads, which interengage with first external screw threads on the first rigid shaft section so that the disk can be gripped between the end flange and the domed cover. The core sleeve surrounds the flexible shaft section, which is disposed between the first rigid shaft section and a second rigid shaft section, which is formed with second external screw threads, which interengage with a nut that is disposed on the rear side of the bowl and is adapted to be tightened against said bowl around the core sleeve for a transmission of torque from said second rigid shaft section via said nut and said bowl to said disk whereas said flexible shaft section is relieved from torque.
REFERENCES:
patent: 2531775 (1950-11-01), Kenerson
patent: 2854829 (1958-10-01), Porter
patent: 2918760 (1959-12-01), Lilleberg
patent: 3707059 (1972-12-01), Bartch et al.
patent: 4674234 (1987-06-01), Reiling et al.
patent: 4760670 (1988-08-01), MacKay, Jr.
Reiling Karl
Reiling Reinhold
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