Method for manufacturing one piece turnbuckle

Details Method for manufacturing one piece turnbuckle Method for manufacturing one piece turnbuckle

2007-06-13

2010-02-23

Ross, Dana (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

C072S340000, C072S379200, C029S896700

Reexamination Certificate

active

07665340

ABSTRACT:
A method for manufacturing a one piece turnbuckle includes preparing a board of metal; deep drawing the board to form two protrusions and shaping the board into a form which has two opposite ends, with the opposite ends defined by the protrusions; deep drawing the board to reduce its thickness and to form a recess; punching the recess off so as to form a through opening; boring a hole through each of the protrusions; and tapping each hole to form a threaded section.

REFERENCES:
patent: 935660 (1909-10-01), Johnson
patent: 1413821 (1922-04-01), Anderson
patent: RE27339 (1972-04-01), Dornbos
patent: 0700748 (1994-12-01), None

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