Rotary punch
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 13, 1986
Issued Date -
N/A
app pub date -
Jan 19, 1984
filing date -
Dec 28, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pipe perforating apparatus has a spindle carrying a cutting tool and a drive for rotating the spindle about its own axis while revolving the spindle about the pipe. The cutter periodically engages and perforates the pipe. To provide for small, uniform sized holes in the pipe, the cutting tool is an end cutting punch and the spindle is rotated and revolved around the pipe to roll the punch into and out of the pipe without exerting a tangential force on the pipe.
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