US3876336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tankless automatic water system
Assignee: Jacuzzi Inc
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Filing: 1970-04-15
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Granted: 1975-04-08
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Expires: 1990-04-15
Abstract
Abstract The invention involves an automatic water supply system requiring no consumer storage tanks, and in which the pump is started in operation in response to the opening of a service line. A small expansible chamber in flow communication with the service line and in pressure communication with a pressure switch connected to the pump motor comprises a switch means assembly which responds to the opening of the service line for energizing the pump motor. A valve assembly associated with the pump, the expansible chamber, and the service line, assures service requirements at substantially constant pressure, and upon closing of the service line, the expansible chamber resets the pressure switch and shuts down the pump.
Inventors
- 👤 Floyd M Nash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:36
CPC Classifications
E; E03; E03B; E03B5/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
220 words
An automatic water system comprising a pump having an inlet and a discharge side, a drive motor coupled to said pump, at least one service line to be supplied by said pump, a pressure responsive valve on the discharge side of said pump in the flow path to said service line, switch means controlling operation of said pump and responsive to opening of said service line, for energizing said motor, said switch means including a pressure switch in circuit with said pump motor, and an expansible tube flow coupled to said service line, and means for pressure coupling said expansible tube to said pressure switch through the water of said system, said pressure switch being adapted for setting to close at a predetermined pressure and open at a higher pressure and said expansible tube having a variable pressure range spanning the low to high pressure range of said pressure switch, and means rendering said switch means ineffective to disconnect said pump motor while said pump is satisfying normal demands of service and said pressure responsive valve is opened, and a leak passageway between the pump discharge and said switch means which is open when there is less than normal demands of service and said pressure responsive valve is closed so that said switch means becomes effective to disconnect said pump.
Claim 2
Dependent Claim
220 words
An automatic water system comprising a pump having an inlet and a discharge side, a drive motor coupled to said pump, at least one service line to be supplied by said pump, a pressure responsive valve on the discharge side of said pump in the flow path to said service line, switch means controlling operation of said pump and responsive to opening of said service line, for energizing said motor, said switch means including a pressure switch in circuit with said pump motor, and an expansible tube flow coupled to said service line, and means for pressure coupling said expansible tube to said pressure switch through the water of said system, said pressure switch being adapted for setting to close at a predetermined pressure and open at a higher pressure and said expansible tube having a variable pressure range spanning the low to high pressure range of said pressure switch, and means rendering said switch means ineffective to disconnect said pump motor while said pump is satisfying normal demands of service and said pressure responsive valve is opened, and a leak passageway between the pump discharge and said switch means which is open when there is less than normal demands of service and said pressure responsive valve is closed so that said switch means becomes effective to disconnect said pump.
Claim 3
Dependent Claim
223 words
An automatic water system comprising a pump having an inlet and a discharge side, a drive motor coupled to said pump, at least one service line to be supplied by said pump, a pressure responsive valve on the discharge side of said pump in the flow path to said service line, switch means controlling operation of said pump and responsive to opening of said service line, for energizing said motor, said switch means including a pressure switch in circuit with said pump motor, and a variable pressure device flow coupled to said service line, and means for pressure coupling said variable pressure device to said pressure switch through the water of said system, said pressure switch being adapted for setting to close at a predetermined pressure and open at a higher pressure and said variable pressure device having a variable pressure range spanning the low to high pressure range of said pressure switch, and means rendering said switch means ineffective to disconnect said pump motor while said pump is satisfying normal demands of service and said pressure responsive valve is opened, and a leak passageway between the pump discharge and said switch means which is open when there is less than normal demands of service and said pressure responsive valve is closed so that said switch means becomes effective to disconnect said pump.
Claim 4
Dependent Claim
223 words
An automatic water system comprising a pump having an inlet and a discharge side, a drive motor coupled to said pump, at least one service line to be supplied by said pump, a pressure responsive valve on the discharge side of said pump in the flow path to said service line, switch means controlling operation of said pump and responsive to opening of said service line, for energizing said motor, said switch means including a pressure switch in circuit with said pump motor, and a variable pressure device flow coupled to said service line, and means for pressure coupling said variable pressure device to said pressure switch through the water of said system, said pressure switch being adapted for setting to close at a predetermined pressure and open at a higher pressure and said variable pressure device having a variable pressure range spanning the low to high pressure range of said pressure switch, and means rendering said switch means ineffective to disconnect said pump motor while said pump is satisfying normal demands of service and said pressure responsive valve is opened, and a leak passageway between the pump discharge and said switch means which is open when there is less than normal demands of service and said pressure responsive valve is closed so that said switch means becomes effective to disconnect said pump.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |