US4422829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sump drain system
Assignee: Individual
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Filing: 1982-02-25
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Granted: 1983-12-27
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Expires: 2002-02-25
Abstract
Abstract A drain system for a sump, including an electrically powered sump pump normally operable in response to the water level in the sump to drain the sump when the level reaches a predetermined point, and a water powered pump driven by a source of water under pressure and which operates in the event of an electrical power failure or in the event of a failure of the electrically driven pump.
Inventors
- 👤 William T. Buchanan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:01
CPC Classifications
F; F04; F04F; F04F5/00; F04F5/44; F04F5/48
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
A drain system for a sump disposed in a dwelling supplied with electrical power and municipal water, said system comprising a first pump energizable by said electrical power, and a second pump energizable by said municipal water, first means causing said first pump to be energized and drain the sump in response to the water rising to a first predetermined level, and second means causing said second pump to be energized and drain the sump immediately upon a failure of said electrical power, said second means further causing said second pump to be energized and drain the sump upon the water rising to a second predetermined level higher than said first predetermined level.
Claim 2
Dependent Claim
113 words
A drain system for a sump disposed in a dwelling supplied with electrical power and municipal water, said system comprising a first pump energizable by said electrical power, and a second pump energizable by said municipal water, first means causing said first pump to be energized and drain the sump in response to the water rising to a first predetermined level, and second means causing said second pump to be energized and drain the sump immediately upon a failure of said electrical power, said second means further causing said second pump to be energized and drain the sump upon the water rising to a second predetermined level higher than said first predetermined level.
Claim 3
Dependent Claim
23 words
The drain system of claim 1, wherein said first means includes a float operated switch selectively connecting electric power to said first pump.
Claim 4
Dependent Claim
43 words
The drain system of claim 1, wherein said second means includes a normally open electric control valve selectively connecting the municipal water to said second pump, and a float operated normally closed electric switch selectively supplying electrical power to said electric control valve.
Claim 5
Dependent Claim
43 words
The drain system of claim 2, wherein said second means includes a normally open electric control valve selectively connecting the municipal water to said second pump, and a float operated normally closed electric switch selectively supplying electrical power to said electric control valve.
Claim 6
Dependent Claim
171 words
An automatic drain system for removing water from a sump comprising, first and second pumps connected to said sump to pump water from the sump, said first pump having an electric motor for driving same, a source of electrical power for said motor, and a float operated control for causing the motor to be connected to said source of electrical power when the water in the sump is at a predetermined level, a source of water under pressure, said second pump being operated by said source of water under pressure, an electrically operated control valve for selectively connecting said water source to said second pump, and a float operated switch for selectively connecting said electrical power to said control valve, whereby said control valve is open when de-energized and therefore when the electrical power fails, and said switch is open when the water is at a predetermined level above the level which causes the motor to be connected to said source of electrical power to de-energize and open the control valve.
Claim 7
Dependent Claim
171 words
An automatic drain system for removing water from a sump comprising, first and second pumps connected to said sump to pump water from the sump, said first pump having an electric motor for driving same, a source of electrical power for said motor, and a float operated control for causing the motor to be connected to said source of electrical power when the water in the sump is at a predetermined level, a source of water under pressure, said second pump being operated by said source of water under pressure, an electrically operated control valve for selectively connecting said water source to said second pump, and a float operated switch for selectively connecting said electrical power to said control valve, whereby said control valve is open when de-energized and therefore when the electrical power fails, and said switch is open when the water is at a predetermined level above the level which causes the motor to be connected to said source of electrical power to de-energize and open the control valve.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-26 | 1987-06-27 | 1987-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-26 | 1991-06-27 | 1991-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-26 | 1995-06-27 | 1995-12-27 | $7700.00 | Window Closed / Lapsed |