Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with... – Casing having multiple parts releasably clamped
Patent
1993-10-29
1995-09-26
Kwon, John T.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
Casing having multiple parts releasably clamped
F04D 2960
Patent
active
054529875
ABSTRACT:
The fan housing for a multistage fan has a first housing part for receiving the electric motor, a second housing part mounted coaxially on the first housing part, and a housing cover mounted on the opposing side of the second housing part. So that fan noise is minimize during fan operation, for improved protection from external effects and to avoid tension originating from thermal expansion in the blower housing the housing cover for the second housing part has a peripheral cover edge portion and is pot-shaped or cap-shaped; the housing cover completely overlaps the second housing part; an overlapping peripheral portion of this housing cover has a radial spacing from the second housing part so as to form an air cushion between the second housing part and the housing cover and the cover edge portion of the housing cover is supported on the first housing part so as to enclose the second housing part.
REFERENCES:
patent: 2673752 (1954-03-01), Swearingen
patent: 4390317 (1983-06-01), Lehmann et al.
patent: 4406582 (1983-09-01), LaGrange
patent: 4770606 (1988-09-01), Kuroiwa
patent: 4997342 (1991-03-01), Conger, IV
patent: 5207560 (1993-05-01), Urban
Bleger Claude
Goehre Jochen
Muschelknautz Claudius
Ruf Horst
Kwon John T.
Robert & Bosch GmbH
Striker Michael J.
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