Interstage casing for a pump made of sheet metal and method of m

Details Interstage casing for a pump made of sheet metal and method of m Interstage casing for a pump made of sheet metal and method of m

1993-08-27

1994-12-06

Larson, Lowell A.

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

B21D 2226

Patent

active

053699726

ABSTRACT:
An interstage casing made of sheet metal includes a cylindrical receptacle-like body having a casing end wall on an end thereof and an open end opposite to The end. The omen end has an axial end surface and a radially inner surface which serve as a member of a spigot joint to be joined to the next interstage casing. The cylindrical receptacle-like body also includes a cylindrical side wall, a cylindrical portion joined between the casing end wall and the cylindrical side wall and having an outside diameter slightly smaller than an inside diameter of the open end, and a flat portion joined to the recessed portion and serving as an end surface of the casing end wall. The flat portion is adapted to be engageable with the end surface of the open end of an adjacent interstage casing. The flat portion has an outside diameter slightly larger than an outside diameter of the open end. The interstage casing further includes a recessed portion joined to The cylindrical portion and smaller in diameter than the cylindrical portion. The recessed portion provides a space for installing an O-ring therein.

REFERENCES:
patent: 2754785 (1956-07-01), Zatko
patent: 4877372 (1989-10-01), Jensen et al.
patent: 5040947 (1991-08-01), Kajiwara et al.

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