Method and apparatus for liquid control system having a valve with a notch in the seal for enabling a sufficient fluid to pass through when the seal is fully closed to cool the pump and/or motor
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First Claim
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1. A method of preventing a liquid pump motor from cycling comprising:
- a) placing a constant outlet pressure valve device having a valve and a valve seat downstream from a pump connected to said motor,b) placing a pressure tank, a distribution system, and a pressure on/off switch downstream from the valve device,c) always permitting a trickle through the valve device, byd) making a notch between the valve and valve seat, ande) flushing the notch free of all debris upon each opening of the valve device.
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Abstract
A water system uses a pressure reservoir of extremely small size. A valve device is placed between a water pump and the pressure reservoir. The valve device has a constant outlet pressure to limit the flow from the pump at high pressures. The pump is turned on and off by a pressure on/off switch. The valve device maintains the pressure to the reservoir at or below the on switch pressure except for a dribble flow. The dribble flow fills the reservoir when there is little or no water usage from the reservoir. The dribble flow is achieved by a notch in the valve surfaces of the valve device. Each time the valve opens any debris in the notch is washed from the notch thereby keeping the notch free of debris.
28 Citations
19 Claims
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1. A method of preventing a liquid pump motor from cycling comprising:
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a) placing a constant outlet pressure valve device having a valve and a valve seat downstream from a pump connected to said motor, b) placing a pressure tank, a distribution system, and a pressure on/off switch downstream from the valve device, c) always permitting a trickle through the valve device, by d) making a notch between the valve and valve seat, and e) flushing the notch free of all debris upon each opening of the valve device. - View Dependent Claims (2)
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3. A valve device for controlling the flow of liquid from a motor driven pump to a distribution system, said device having
a) a housing divided into b) a down stream space and c) an upstream space by d) a valve seat having e) a sealing surface, f) a valve mounted in the housing for movement by g) a valve extension, h) said valve having a sealing surface in mating and operative relationship to said valve seat sealing surface, and i) moving means for moving said valve sealing surface toward said valve seat sealing surface responsive to increased pressure in the downstream space and also j) for fully closing the sealing surfaces at a preset closing pressure in the downstream space; -
wherein said improvement comprises; k) a notch in one of the sealing surfaces, l) said notch has an opening to always allow a trickle flow of liquid through the notch when the sealing surfaces are fully closed. - View Dependent Claims (4, 5, 6, 7, 8, 9)
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10. A method of preventing a liquid pump motor from cycling comprising:
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a) placing a constant outlet pressure valve device having a valve and a valve seat downstream from a pump connected to said motor, aa) said pump having a flow capability at a constant outlet pressure as controlled by said valve, b) placing a pressure tank, a distribution system, and a pressure on/off switch downstream from the valve device, c) always permitting a flow of 5% of said flow capability through the valve device. - View Dependent Claims (11, 12)
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13. A liquid system which includes a valve device for controlling the flow of liquid from a motor driven pump to a distribution system, said valve device having:
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a) a housing divided into b) a down stream space and c) an upstream space by d) a valve seat having e) a sealing surface, f) a valve mounted in the housing for movement by g) a valve extension, h) said valve having a sealing surface in mating and operative relationship to said valve seat sealing surface, and i) moving means for moving said valve sealing surface toward said valve seat sealing surface responsive to increased pressure in the downstream space and also j) for fully closing the sealing surfaces at a preset closing pressure in the downstream space; said liquid system including; k) a motor drivingly connected to, l) a liquid pump, m) the valve device is connected downstream of the pump, n) a pressure tank connected downstream of the valve device, o) a pressure switch means for starting the motor at a preset starting pressure and for stopping the motor at a preset stopping pressure higher than the preset starting pressure, said pressure switch means connected to the valve device downstream thereof, p) said pump having a flow capacity at said preset closing pressure, and q) a distribution system connected to the valve device downstream thereof; wherein said improvement comprises; r) a notch in one of the sealing surfaces, s) said notch has an opening always permitting a flow of 5% of said flow capacity at said preset closing pressure. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification
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Litigation Data
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Current AssigneeCycle Stop Valves Incorporated
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Original AssigneeCary M. Austin
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InventorsAustin, Cary M.
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Primary Examiner(s)Freay, Charles G.
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Assistant Examiner(s)Evora, Robert Z.
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Application NumberUS08/886,905Time in Patent Office874 DaysField of Search417/44.2, 417/26, 417/53, 417/44, 417/43, 417/31, 417/441, 417/507, 417/28, 417/58, 137/568US Class Current417/44.2CPC Class CodesF04B 49/02 Stopping, starting, unloadi...
