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. 25, 1978
Filed:
Nov. 22, 1976
Applicant:
Inventor:
Warner Jan de Putter, Hardenberg, NL;
Assignee:
Wavin B. V., Zwolle, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ; H05F / ; F16L / ; F16L / ;
U.S. Cl.
CPC ...
361215 ; 138149 ; 174 47 ;
Abstract
A thermally insulated pipe particularly destined for mining industries, comprising an outer and an inner pipe, whereinbetween an insulating layer is arranged, the outer pipe being made of a synthetic material. The surface of the outer pipe is provided with an outside surface layer, being electrically conductive, which layer is connected with the inner pipe in an electrically conducting manner. The insulating material inbetween the two pipes is heat resistant.