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:
May. 30, 2000
Filed:
Jul. 31, 1998
Applicant:
Inventor:
John O Fowler, Derby, GB;
Assignee:
Rolls-Royce plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K / ; B23K / ;
U.S. Cl.
CPC ...
228157 ; 228190 ;
Abstract
It is the norm to make diffusion bonded and superplastically formed heat exchanger panels from a trio of three sheet stacks, which employs four diffusion bonding stages and three superplastic forming stages. The concept described and claimed obviates one sheet from the central stack and provides only one passageway between the remaining two sheets. The advantages gained include less material and one bonding/superplastic forming stage is obviated with resulting savings in cost, time and machine utilization.