Canned motor pump

Details Canned motor pump Canned motor pump

1987-11-20

1989-06-13

Croyle, Carlton R.

Pumps

With signal, indicator, or inspection means

417420, 41742311, 41742314, 464 29, F04B 4900

Patent

active

048387630

ABSTRACT:
A canned motor pump wherein the can has at least two coaxial tubular walls defining an annular space for the flow of a preferably gaseous fluid which is used to facilitate detection of leaks in the walls of the can. Each tubular wall can individually seal the driving unit from the driven unit of the pump motor. The leak detector can generate visible, audible and/or otherwise detectable signals, and such signals can also serve to stop the motor in the event of leakage.

REFERENCES:
patent: 2662478 (1953-12-01), Surre
patent: 3131638 (1964-05-01), Wilson et al.
patent: 3163790 (1964-12-01), White
patent: 3605566 (1971-09-01), Vetter
patent: 3661060 (1972-05-01), Bowen
patent: 4013384 (1977-03-01), Oikawa
patent: 4120618 (1978-10-01), Klaus
patent: 4226574 (1980-10-01), Villette
patent: 4569634 (1986-02-01), Mantell
patent: 4752194 (1988-06-01), Wienen et al.
CAV (Chemie, Anlagen und Verfahren), FIGS. 6-8, p. 100 (Aug. 1985).
DIN 6618, Teil 3 (Oct. 1981) (German Standard).

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