Hysteresis magnet coupling for roots type pumps

Details Hysteresis magnet coupling for roots type pumps Hysteresis magnet coupling for roots type pumps

1991-05-16

1993-06-01

Stodola, Daniel P.

Rotary shafts, gudgeons, housings, and flexible couplings for ro

Having heating or cooling means

415 10, 417420, 464 29, F16D 2700

Patent

active

052155013

ABSTRACT:
A hysteresis magnet coupling for Roots type pumps comprises a magnet plate holding member connected to either one of a pump shaft or a driving shaft, a hysteresis plate holding member connected to the other of shafts and a diaphragm of a non-magnetic material interposed between a magnetic plate and a hysteresis plate and hermetically sealed at its peripheral portion to a pump housing to prevent heat generated at the hysteresis plate from transferring to the magnet plate to thereby maintain a stabilized operation of the pump.

REFERENCES:
patent: 2638558 (1953-05-01), Rankin
patent: 4115040 (1978-09-01), Knorr
patent: 4137473 (1979-01-01), Pfister
patent: 4277707 (1981-07-01), Silver et al.
patent: 4526518 (1985-07-01), Wiernicki
patent: 4674960 (1987-06-01), Rando et al.
patent: 4722661 (1988-02-01), Mizuno
patent: 4754181 (1988-06-01), Mizobuchi et al.

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