Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1992-07-01
1994-01-25
Look, Edward K.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
417 44A, 417 53, 417543, F04B 4906
Patent
active
052811018
ABSTRACT:
A water supply system includes a motor operated pump (12) which provides water upon demand to a remote location via a discharge pipe (13). When the demand 5 ceases, the pump (12) continues to operate to provide water to an annular chamber (21) which is under air pressure. The annular chamber (21) is formed by a storage pipe (20) generally concentrically positioned around the discharge pipe (13). A pressure switch (17) senses the water pressure in the discharge pipe (13) and stops the pump when a first predetermined pressure level is reached. Then upon the next water demand, water is provided from that in the storage pipe (20) until a second predetermined pressure level is sensed by the switch (17) at which time the pump (12) is activated to provide water through the discharge pipe (13). An air volume control unit (45) maintains the proper air pressure in the annular chamber (21).
REFERENCES:
patent: 2211074 (1940-08-01), Raulerson
patent: 2359389 (1944-10-01), Saulsberry
patent: 2744543 (1956-05-01), Brady, Jr.
patent: 3370544 (1968-02-01), Thorpe, Sr.
patent: 3457864 (1969-07-01), Price
patent: 3876336 (1975-04-01), Nash
patent: 4462758 (1984-07-01), Speed
patent: 4936383 (1990-06-01), Towner et al.
Part 11, pp. 56-57 entitled "Pressure Tanks" of The Water Systems Handbook published by The Water Systems Council, 1987.
A brochure entitled "Pressurized Diaphragm Tanks" published by F. E. Myers, Ashland, Ohio dated Jan. of 1991.
Look Edward K.
McNeil (Ohio) Corporation
Scheuermann David W.
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