Directional changeover pump

Details Directional changeover pump Directional changeover pump

1994-08-15

1996-01-23

Look, Edward K.

Rotary kinetic fluid motors or pumps

Including working fluid force responsive vane or flow control

415911, 417442, F04D 100

Patent

active

054860890

ABSTRACT:
A directional changeover pump in accordance with the present invention is capable of changing the direction of a fluid flow depending upon the rotational direction of an impeller. The directional changeover pump employs a reciprocable member for opening one discharge port and closing the other discharge port. As a result, the directional changeover pump has an extended service life and a simplified structure, since the wear of the discharge ports is automatically compensated by a spherical configuration of a reciprocating member and the sealing member between the operating components is eliminated.

REFERENCES:
patent: 2566609 (1951-09-01), Grosse
patent: 2992652 (1961-07-01), Fellberg
patent: 4653977 (1987-03-01), Fries
patent: 4728260 (1988-03-01), Ishii
patent: 4869076 (1989-09-01), Sakai et al.
patent: 4874298 (1989-10-01), Mainardi et al.
patent: 4900235 (1990-02-01), Perkins et al.
patent: 5344293 (1994-09-01), Mota et al.

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