Electric motor-driven impeller-type air pump

Details Electric motor-driven impeller-type air pump Electric motor-driven impeller-type air pump

1988-12-05

1990-01-16

Stout, Donald E.

Pumps

Motor driven

Including means utilizing pump fluid for augmenting cooling,...

41742315, 41742314, 415204, 4151691, F04D 2928

Patent

active

048939951

ABSTRACT:
A high speed electric motor drives an impeller to centrifugally induce air flow to an engine exhaust system. The motor is sealed within a noise attenuating cover, and the impeller induces a portion of the air flow to recirculate through the sealed motor chamber to cool the motor. A noise attenuating duct is mounted on the pump inlet. The duct includes an elongated neck of rectangular cross-section extending at an angle from a tubular body, the remote end of said neck being tapered, each side of the neck having a series of parallel inlet louvers, and the body having an internal foam liner.

REFERENCES:
patent: 2386508 (1945-10-01), Ripley
patent: 2843314 (1958-07-01), Hansen
patent: 3125286 (1964-03-01), Sanders
patent: 3168806 (1965-02-01), Calvert
patent: 3220349 (1965-11-01), White
patent: 3301472 (1967-01-01), Dixon et al.
patent: 3751914 (1973-08-01), Pollock
patent: 3775064 (1973-11-01), Berger et al.
patent: 4080121 (1978-03-01), Goloff et al.
patent: 4508486 (1985-04-01), Tinker

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