Title: Production of corrugated tubing

Abstract: Corrugated tubing is prepared by exerting axial pressure on the tubing being corrugated, without exerting any essential axial pressure, on the corrugating tool. Such pressure can be exerted by applying a braking force on the tubing exiting from the corrugator.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Albes, Friedrich (Stadthagen, DT)
Kleemann, Werner (Hannover, DT)
Ziemek, Gerhard (Hannover, DT)

Application Number: 539809
Filing Date: 1975-01-09
Publication_date: 1976-08-10
Assignee: Kabel-und Metallwerke Gutehoffnungshutte Aktiengesellschaft (DT)
Primary Class(es): 72/177 72/370.19
Other Classes:
US Patent Ref:

2761490	Sep, 1956	Walton	72/177.
2987798	Jun, 1961	Fromont	29/1.
3269005	Aug, 1966	Smith	29/477.

Other Refs:
Primary Examiner: Larson, Lowell A.
Assistant Examiner: Crosby, Gene P.
Attorney: Marn & Jangarathis