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US 5,464,327 AGranted
Water pressure control system
AssigneeITT Corporation
InventorRobert P. Horwitz
Life of this patent
Estimating the term…
Abstract
A water pressure control system in which the pressurizing pump is turned on only in response to low pressure but is turned off only in response to low water flow rates. Water flow is detected with a magnetic switch displaced by water movement. After the pump is turned on, it can not be turned off for ten seconds, to smooth operation. When the system is first activated, the pump is turned on for sixty seconds, without regard to the other control functions, to guarantee priming of the pump.
Claims11
A water pressure control system comprising in combination:
- a pump operable to pump water from a source to a desired destination;
- pressure measuring means to measure the pressure of water from said pump;
- flow measuring means to measure the rate of flow of water from said pump;
- control means connected to both of said measuring means and operable to turn on said pump when the water pressure falls below a selected pressure, and further operable to turn off said pump only in response to the flow of water falling below a selected rate.
1 more element
Dependencies are inferred from the claim text.