Metal deforming – By or with work-constrainer and/or manipulated work-forcer
Patent
1993-03-23
1994-07-19
Larson, Lowell A.
Metal deforming
By or with work-constrainer and/or manipulated work-forcer
72705, B21D 112
Patent
active
053298020
ABSTRACT:
Attachment for a power source such as a rotary drill equipped with a forward (clockwise) and reverse (counterclockwise) feature. Such attachment can be fixedly secured to a power source. The turning power of the chosen power source drives the enlongated cylindrical body with the attached self-drilling sheet metal screw causing it to automatically engage onto or disengage itself from a work piece. A strike washer and a stop member placed on the opposite ends of each other and a weighted impact member which is manually slided along the enlongated cylindrical body and driven into contact with either mentioned members. The force of the impact will either pull outwardly the damaged area of a sheet metal work piece to which the tool is attached or push it inwards depending upon the direction of the applied impact in order to return it to its original contour.
REFERENCES:
patent: 4072042 (1978-02-01), Servin et al.
patent: 4653167 (1987-03-01), Mullins
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