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:
Mar. 05, 1991
Filed:
Apr. 05, 1990
Applicant:
Inventor:
Joseph Le Mer, St Thegonnec, FR;
Assignee:
Chaffoteaux et Maury, , FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F22B / ; F22B / ;
U.S. Cl.
CPC ...
122260 ; 1223671 ; 12223516 ; 165140 ; 165170 ; 237 19 ; 29890039 ;
Abstract
A double pipe is disclosed for mixed boilers comprising rectilinear segments in which the two duct sections are juxtaposed laterally. Each section (A,B) is defined, on its side the furthest away from the other section, by a plate (1,7) whose two longitudinal borders (2,3,8,9) are curved and are welded against the longitudinal borders of an intermediate partition (4) and this intermediate partition has stamped bosses (5) whose tops (6) are in contact with said plates and are fixed thereto.