William Makar from 350 141St St, Miami, FL 33161

Name / Title

Company / Classification

Phones & Addresses

William Makar
President, Director

INCHAR TOOLS INC

10849 NE 3 Ct, Miami, FL 33161

Quick-Change Hole Saw Mandrel
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US Patent:

43033571, Dec 1, 1981
Filed:

May 19, 1980
Appl. No.:

6/151417
Inventors:

William Makar - Miami FL
International Classification:

B23B 4102
B23B 3144
B23B 522
US Classification:

408204
Abstract:

The present quick-change mandrel for attaching a hole saw to an electric drill has different sized oblong locking segments at its front end which match the usual oblong openings in the back of different sized hole saws. The hole saw is slid rearward over the corresponding locking segment and then is turned in peripheral grooves in that locking segment to engage behind rearwardly-facing shoulders on the locking segment. The reaction force on the hole saw when it is cutting into a workpiece forces it more tightly in the grooves.

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Schools:

St. James School New York NY 1955-1959

Community:

Shirley Chin, Rhonda Gordon, Michael Maniscalco, Clement Caracciolo

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William Makar