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:
Jul. 21, 1998
Filed:
Jun. 05, 1996
Walter Wetzels, Aachen, DE;
Schumag AG, Aachen, DE;
Abstract
A pipe profiling machine improves the utilization of the working length of a profiling stone in the inner profiling of heat exchanger pipes. The press-on width of the revolving roller bodies, such as spherical, cylindrical, or barrel-shaped roller bodies, is substantially narrower than the profile width of the profiling stone so that in this area the profiling stone is worn out rapidly while the other area remains unworn. The press-on roller bodies and/or the profiling stone are/is oscillated axially back and forth within the axial working length of the profiling stone so that the entire profile range of the profiling stone can be utilized and so that radially outwardly projecting stripes on the pipes are avoided even if spherical roller bodies are used.