Patent US913628A successfully refreshed from Google Patents.
Patent US4016402A successfully refreshed from Google Patents.
US4016402A
Expired / Lapsed
US
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Water heater control system
Assignee: SCOTT KENNETH W AS TRUSTEE
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Filing: 1975-08-27
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Granted: 1977-04-05
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Expires: 1995-08-27
Abstract
Abstract A water heater control system for controlling the thermostat setting on a water heater which senses the temperature on an outflow line from the water heater and energizes a control for lowering the thermostat setting during periods of low flow demand and raising the thermostat setting during periods of high demand, thereby reducing overall required heating energy.
Inventors
- 👤 Kenneth W. Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 02:22
CPC Classifications
F; F24; F24H; F24H9/00; F24H9/20; F24H9/2007; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; G05D23/1904; G05D23/275
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
112 words
A water heater control system comprising: a water heater having a thermostat control thereon and an outflow line; temperature sensing means disposed in operable proximity to said outflow line and responsive to the temperature of water in said outflow line; thermostat setting means electrically coupled to said temperature sensing means and mechanically coupled to said thermostat control, said thermostat setting means operable for setting said thermostat control to a high temperature position when the temperature of said water in said output line reaches a predetermined low and operable for setting said thermostat to a predetermined low temperature position when said temperature of said water in said outflow line reaches a predetermined high.
Claim 2
Dependent Claim
112 words
A water heater control system comprising: a water heater having a thermostat control thereon and an outflow line; temperature sensing means disposed in operable proximity to said outflow line and responsive to the temperature of water in said outflow line; thermostat setting means electrically coupled to said temperature sensing means and mechanically coupled to said thermostat control, said thermostat setting means operable for setting said thermostat control to a high temperature position when the temperature of said water in said output line reaches a predetermined low and operable for setting said thermostat to a predetermined low temperature position when said temperature of said water in said outflow line reaches a predetermined high.
Claim 3
Dependent Claim
16 words
The water heater control system of claim 1 wherein: said temperature sensing means is a thermoswitch.
Claim 4
Dependent Claim
43 words
The water heater control system of claim 2 and further including: a motor, said thermoswitch operable for coupling electrical energy to said motor in a closed position, said motor being mechanically coupled to said thermostat control and operable for controlling the setting thereof.
Claim 5
Dependent Claim
72 words
The water heater control system of claim 3 and further including: a cam means mechanically coupled to said motor; and first and second electrical switches in operable proximity to said cam means, said first and second electrical switches being in serial relationship with electrical energy coupled to said motor, said cam means being operable for opening one of said electrical switches and de-energizing said motor after a predetermined rotation of said motor.
References Cited (Backward Citations)
US2779855A
Cited
US2843717A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-04 | 1980-10-04 | 1981-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-04 | 1984-10-04 | 1985-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-04 | 1988-10-04 | 1989-04-05 | $7700.00 | Window Closed / Lapsed |