Low-noise vacuum pump

Details Low-noise vacuum pump Low-noise vacuum pump

1991-05-24

1992-09-08

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

41742314, F04B 1700

Patent

active

051453355

ABSTRACT:
A vacuum pump includes a first pump housing defining a pumping chamber; a pump rotor received in the pumping chamber; a drive motor operatively connected to the pump rotor; an oil casing receiving the first pump housing; and a second pump housing surrounding the first pump housing and the drive motor.

REFERENCES:
patent: 4447192 (1984-05-01), Tuckey
patent: 4762472 (1988-08-01), King
patent: 4780063 (1988-10-01), Tuckey
patent: 4806083 (1989-02-01), LaGrange et al.
patent: 4950133 (1990-08-01), Sargent

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