The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 30, 1991
Filed:
Nov. 03, 1989
Applicant:
Inventors:
Dieter Kunze, Neuried, DE;
Wolfgang Giebel, Planegg, DE;
Assignee:
Siemens Aktiengesellschaft, Berlin and Munich, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
405158 ; 138128 ; 2541 / ; 2541 / ; 405154 ;
Abstract
A method and apparatus for the promoting movement of a cable-like element in a selected direction in a pipe with the assistance of a flowing agent moving in the selected direction in the pipe include the use of profiles arranged on the external surface of the cable-like element to produce turbulence which promotes co-movement of the cable-like element in the pipe, together with the flowing agent in the selected direction. A number of different turbulence generating flow promoting structures for the profiles are disclosed.