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. 18, 1989
Filed:
Sep. 25, 1987
Applicant:
Inventors:
Pierre A Bouillot, Yerres, FR;
Claude A Genet, Vigneux, FR;
Primary Examiner:
Int. Cl.
CPC ...
B21K / ; B23P / ;
U.S. Cl.
CPC ...
2915 / ; 29558 ; 60757 ;
Abstract
A method of manufacturing a cooling film device for the combustion chamber of a turbomachine is described in which a blank is machined to provide a substantially cylindrical upstream wall and an enlarged downstream part of generally frusto-conical shape, an inner recess open at the downstream end is machined in the downstream part to constitute an inner wing and an outer wing, the wings are machined and deformed to define a settling chamber which converges in the downstream direction to an annular outlet slit, and the radial upstream end wall of the settling chamber is drilled to provide a plurality of small air inlet holes.