Apparatus for cutting slots in corrugated and twin-wall pipes
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United States of America Patent
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-
Sep 21, 1999
Grant Date -
N/A
app pub date -
Sep 19, 1994
filing date -
Sep 22, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus for cutting slots in corrugated and twin-wall pipes that have annular elevations alternating with annular impressions, comprises a machine frame with a pipe duct and a lifting carriage for moving a pipe through the pipe duct. Two groups of holding and centering levers are provided which are engageable with a pipe for straightening and retaining the latter axially and radially. Further, saws are provided which are disposed between two groups of holding and centering levers on the machine frame and which are movable to reciprocate lineally and radially in relation to the axis of the pipe duct.
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