Method of making pipe diffuser structure

Details Method of making pipe diffuser structure Method of making pipe diffuser structure

1990-10-30

1992-07-21

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

29889, F01D 2524

Patent

active

051311429

ABSTRACT:
In a pipe diffuser, a plurality of circumferentially spaced generally radially extending passages, are formed in a disc in such a way as to eliminate the need for plugs to prevent wandering of the drill bit during the drilling process. The passages are drilled, but not to the point of any substantial intersection between the adjacent passages. Material is then removed from the inner periphery of the disc to the radial extent of a leading edge circle defined by the leading edge of the islands between the passages. The resulting structure is substantially equivalent in performance but is obtained with a much easier process.

REFERENCES:
patent: 1986836 (1935-01-01), MacNeille
patent: 2967013 (1961-01-01), Dallenbach et al.
patent: 3333762 (1967-08-01), Vrana
patent: 3658437 (1972-04-01), Soo
patent: 4579509 (1986-04-01), Jacobi
patent: 5040946 (1991-08-01), Caoduro

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