Fluid reaction surfaces (i.e. – impellers) – With weight-balancing means
Patent
1995-10-30
1998-01-27
Thorpe, Timothy
Fluid reaction surfaces (i.e., impellers)
With weight-balancing means
4151991, 4151992, 41742315, F04D 2922, B64C 2772
Patent
active
057116520
ABSTRACT:
An electrically driven air pump having a pump mechanism in a first section of a housing and an electric motor in a second section of the housing in driving engagement with the pump mechanism. First and second end covers are sealingly secured on the housing. The electric motor is supported by elastomer rings in the housing. The pump mechanism has two axially spaced rotor wheels secured on the drive shaft of the motor and a stator wheel between the rotor wheels. The electric motor is balanced, in situ, in its mounted state by adjusting that one of the rotor wheels which is exposed in the housing prior to installation of the end cover on the first section of the housing. After the motor is balanced, the end cover is press fit on the housing and stator wheel to form air-tight, friction fit seal joints therebetween in which the engaged parts which are deformed elastically or plastically.
REFERENCES:
patent: 2486619 (1949-11-01), Troxler
patent: 2857849 (1958-10-01), Pezzillo
patent: 4585963 (1986-04-01), Wilkinson, Jr. et al.
Database WPI, Section CH, Week 7502 Derwent Publications, Ltd. London GB, Class A88, AN 7502201w.
Muckelmann Klaus
Peters Rainer
Van De Venne Gunter
Pierburg AG
Thorpe Timothy
Tyler Cheryl J.
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