Pumps – Condition responsive control of pump drive motor – Responsive to accumulation of pumped liquid in receiver
Patent
1980-08-01
1983-06-14
Look, Edward K.
Pumps
Condition responsive control of pump drive motor
Responsive to accumulation of pumped liquid in receiver
92132, 92134, 92136, F04B 4908
Patent
active
043880444
ABSTRACT:
A liquid storage tank for providing a liquid under pressure in such a way that pressurized air will not be absorbed by the liquid is disclosed. According to one embodiment of this invention, the pressurized storage tank of this invention having side walls and an end wall uses a plunger or a plate having a seal which is biased to move within the tank as water or liquid is forced into the tank or withdrawn from the tank. According to this embodiment, springs may be positioned in different arrangements and used to provide the bias that maintains the water or liquid under pressure. Still other embodiments use mass or weight while still others use power actuated means or air pressure for providing the necessary bias. In other embodiments of the invention, the tank may include a seal and/or a collapsable liner to prevent any of the liquid from passing the plunger or piston. The addition of a collapsable liner is especially useful if the liquid to be maintained under pressure is corrosive.
REFERENCES:
patent: 2681012 (1954-06-01), Hackman
patent: 2851011 (1958-09-01), Chasser
patent: 2858672 (1958-11-01), Clark
patent: 2926492 (1960-03-01), Flanagan
patent: 3243958 (1966-04-01), Ruchser
patent: 3318247 (1967-05-01), Yost
patent: 3738775 (1973-06-01), Strickland
patent: 3804125 (1974-04-01), Sonneman
patent: 3851661 (1974-12-01), Fernandez
patent: 3994624 (1976-11-01), Plunkett et al.
patent: 4278403 (1981-07-01), Shafer
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