Double selectable delivery pump

Details Double selectable delivery pump Double selectable delivery pump

1988-03-07

1989-10-17

Freeh, William L.

Pumps

Reverse flow with unidirectional drive or unidirectional...

417442, 415911, 415148, F01D 130, F04B 3910, F04B 3504

Patent

active

048742988

ABSTRACT:
The double delivery pump comprises an impeller with double direction of rotation contained in a body connected to an axial intake conduit and defining a cylindrical seat connected to two tangential rectilinear ducts leading into a distribution seat containing a distribution element. The distribution element can slide in the distribution seat and defines shutters which can cutoff one or the other of two delivery conduits connected to the opposite ends of the distribution seat.

REFERENCES:
patent: 3753601 (1973-08-01), Hensley
patent: 4600361 (1986-07-01), Bianco
patent: 4653977 (1987-03-01), Fries
patent: 4728268 (1988-01-01), Ishii
patent: 4824332 (1989-04-01), Perkins et al.

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