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:
Dec. 20, 1994
Filed:
Sep. 15, 1993
Applicant:
Inventor:
Robert J Osborn, Orange, CT (US);
Assignee:
The Allen Group, New Haven, CT (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F / ;
U.S. Cl.
CPC ...
165173 ; 165153 ; 29890043 ; 29890052 ;
Abstract
A heat exchanger includes a metal tank having an open side and a flange around the open side, and a metal header plate connected to a plurality of heat exchanging tubes, the header plate having a channel around its periphery for mating with the tank flange. The cast metal tank has predominately thin walls and at least one cast indentation point for starting a drilled hole. The indentation point is located in a defined, limited region of the tank walls having a thickness greater than surrounding wall regions. The indentation point may be drilled out and, optionally, tapped, to form an additional access opening in the tank.