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. 07, 1981
Filed:
Jun. 20, 1979
Applicant:
Inventor:
Peter Rohner, Isernhagen, DE;
Assignee:
Kabel-und Metallwerke, Gutehoffnungshutte A.G., Hanover, DE;
Primary Examiner:
Int. Cl.
CPC ...
F16L / ; H01B / ;
U.S. Cl.
CPC ...
138113 ; 138114 ; 138148 ; 174 28 ; 174 29 ;
Abstract
A spacer for concentric tubes is constructed as a helical braid; the braid elements have smooth or contoured surfaces, are of a solid configuration, or are made from stranded filaments. The elements or filaments are made from synthetic (polymer) material or metal, or one uses both kinds of materials in the same braid or element.