Roll for a radial thread-rolling head
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 9, 2001
Grant Date -
N/A
app pub date -
Feb 22, 2000
filing date -
Apr 22, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A roll for a radial thread-forming head which has disposed at its circumference a thread-forming profile with a flattened area, a thread entry portion, a thread calibrating portion, and a thread exit portion, characterized in that an annular, continuous groove portion is formed in the longitudinal half of the roll in a radial plane at the circumference, except for the flattened area, and a thread-forming profile is formed in the two sides of the groove portion wherein the pitches of the thread-forming profiles are opposed and the positions of the flattened areas are coincident.
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