US4281968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water storage and pumping system
Assignee: Individual
•
Filing: 1978-08-21
•
Granted: 1981-08-04
•
Expires: 1998-08-21
Abstract
Abstract A water storage and pumping system with a motor control for the pump, which is responsive to storage tank pressure and comprises an analog pressure tank and a low pressure responsive valve to admit water from the storage tank service line to the pressure tank and a high pressure responsive valve which allows the pressure tank to drain through a time delay bleed valve. A pressure responsive electrical switch senses the pressure tank pressure and controls operation of the pump.
Inventors
- 👤 Francis A. Akers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:17
CPC Classifications
F; F04; F04B; F04B49/00; F04B49/02; F04B49/022; E; E03; E03B; E03B5/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
115 words
A pressure responsive motor control system comprising: at least one electrical motor; a source of electrical power; pressure responsive switching means interconnecting the motors and the source of electrical power; first and second oppositely operating pressure responsive fluid valves, each having fluid inputs and outputs; a source of fluid pressure connected in parallel to the said pair of valves and to the input of the first valve; at least one pressure tank; means interconnecting the tanks to the output of the first valve including a reverse flow check valve; drain means connected to the tank, including at least one bleed valve and the second valve; and conduit means interconnecting the tank and the switching means.
Claim 2
Dependent Claim
115 words
A pressure responsive motor control system comprising: at least one electrical motor; a source of electrical power; pressure responsive switching means interconnecting the motors and the source of electrical power; first and second oppositely operating pressure responsive fluid valves, each having fluid inputs and outputs; a source of fluid pressure connected in parallel to the said pair of valves and to the input of the first valve; at least one pressure tank; means interconnecting the tanks to the output of the first valve including a reverse flow check valve; drain means connected to the tank, including at least one bleed valve and the second valve; and conduit means interconnecting the tank and the switching means.
Claim 3
Dependent Claim
88 words
A water storage and pumping system comprising: an elevated storage tank; a source of water; electric pump means having an output and interconnecting the water source and the storage tank; a pressure tank; first pressure responsive valve means interconnecting the pressure tank and the pump output; pressure tank drain means connected to the pressure tank, including selectively operable bleed valve means and second pressure responsive valve means connected to the pump output; pressure responsive switching means connected to the pressure tank and electrically connected to the pump means.
Claim 4
Dependent Claim
88 words
A water storage and pumping system comprising: an elevated storage tank; a source of water; electric pump means having an output and interconnecting the water source and the storage tank; a pressure tank; first pressure responsive valve means interconnecting the pressure tank and the pump output; pressure tank drain means connected to the pressure tank, including selectively operable bleed valve means and second pressure responsive valve means connected to the pump output; pressure responsive switching means connected to the pressure tank and electrically connected to the pump means.
Claim 5
Dependent Claim
28 words
The combination of claim 2 wherein the said first valve means is openable at a given pressure and the second valve means closes at the said given pressure.
Claim 6
Dependent Claim
18 words
The combination of claim 3 wherein the first pressure responsive valve means includes a reverse flow check valve.
References Cited (Backward Citations)
US1416092A
Cited
US1838228A
Cited
US1936821A
Cited
US2720355A
Cited
US3457864A
Cited
US3563671A
Cited
US4180374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-08-03 | 1985-02-02 | 1985-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-03 | 1989-02-02 | 1989-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-03 | 1993-02-02 | 1993-08-04 | $7700.00 | Window Closed / Lapsed |