Cutting by use of rotating axially moving tool – Processes – Bit detachable
Patent
1993-04-29
1994-02-22
Howell, Daniel W.
Cutting by use of rotating axially moving tool
Processes
Bit detachable
408221, 470207, B23G 500
Patent
active
052881814
ABSTRACT:
A rethreading tool (10) for reconditioning and rethreading the threads (62) of a stud (60) is described. The tool includes a moveable jaw (26) having an extension (26A) pivotably mounted into a slot 24 of a fixed jaw (16). The extension and a first portion (16A) of the fixed jaw form a cam surface (40) which is activated by a cam nut (56) to move the moveable jaw toward the fixed jaw after positioning of the tool around the stud. Upon closing, the jaws form a complete circular opening (42) which contains a complete circular thread die (48) formed from a first thread die (22) in the fixed jaw and a second thread die (46) in the moveable jaw. In use, the tool is placed over the threads of the stud and the jaws are moved into the closed position such that the complete thread die is adjacent the threads of the stud. The tool is then rotated off of the stud.
REFERENCES:
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patent: 522471 (1894-07-01), Kohler
patent: 1085762 (1914-02-01), Smith
patent: 1382841 (1921-06-01), Lynn
patent: 1392705 (1921-10-01), Rhodes
patent: 2700166 (1955-01-01), McKenzie
patent: 2718646 (1955-09-01), McKenzie
patent: 3956787 (1976-05-01), Crumpacker
patent: 4572032 (1986-02-01), Kinzler
patent: 4630978 (1986-12-01), Keiser et al.
Howell Daniel W.
McLeod Ian C.
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