Tap employing deformation of matter

Details Tap employing deformation of matter Tap employing deformation of matter

1997-09-24

1999-08-17

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

Tool orbiting or rotating about an axis

72126, B21H 308

Patent

active

059376848

ABSTRACT:
This invention relates to a tap employing deformation of matter, wherein it comprises a body which bears three rotating cylinders mounted idly and provided with annular threads each distant by the value of the pitch of the threading to be made. These three cylinders are regularly distributed and are inclined axially by an angle equal to the helix angle of the thread to be made.

REFERENCES:
patent: 223840 (1880-01-01), Collins
patent: 559189 (1896-04-01), Mosher
patent: 785982 (1905-03-01), Kinney
patent: 949136 (1910-02-01), Ashley
patent: 2349863 (1944-05-01), Hallberg
patent: 2645954 (1953-07-01), Pfingston
patent: 3491567 (1970-01-01), Zeller et al.

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