Magnet pump

Details Magnet pump Magnet pump

1990-09-12

1992-10-13

Bertsch, Richard A.

Pumps

Motor driven

Electric or magnetic motor

4174238, 4151721, 415104, 384476, 384320, F03B 1106, F04D 1302

Patent

active

051545870

ABSTRACT:
A magnet pump is provided with a heat insulating member arranged between a shaft serving as the rotating axis and an impeller or a magnet can, heat conduction cut-off grooves on a heat conducting path, and a safety lock mechanism. These elements ensures to prevent frictional heat, even if generated due to abnormal operating conditions such as a non-load operation, from being conduted to parts with lower heat resistivity such as the impeller and the casing, deflection in rotation caused by looseness due to thermal expansion, and accordingly the magnet pump is protected from damages.

REFERENCES:
patent: 3332252 (1967-07-01), Miller et al.
patent: 3411450 (1968-11-01), Clifton
patent: 3513942 (1970-05-01), Sato
patent: 3520642 (1970-07-01), Fulton
patent: 3664758 (1972-05-01), Sato
patent: 4047847 (1977-09-01), Oikawa
patent: 4115038 (1978-09-01), Litzenberg
patent: 4134712 (1979-01-01), Kemmner et al.
patent: 4135863 (1979-01-01), Davis et al.
patent: 4661044 (1987-04-01), Freeland
patent: 4952078 (1990-08-01), Ankenbauer et al.
patent: 4998863 (1991-03-01), Klaus
patent: 5028150 (1991-07-01), Kronenberger
patent: 5046920 (1991-09-01), Higashi et al.

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