US4524908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Set-back thermostat assembly
Assignee: CLARK AND COMPANY Inc A CORP OF VT
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Filing: 1983-11-15
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Granted: 1985-06-25
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Expires: 2003-11-15
Abstract
Abstract The assembly comprises a heat emitting element located in a thermostat and an electrical circuit for selectively energizing and deenergizing said element by means of local control or remotely activated circuitry. The assembly has means for allowing varying amounts of predetermined current to be conducted through said element. This allows for an unlimited variety of control over the amount of heating or cooling provided through direct or remote operation as specifically desired by the operator of the system.
Inventors
- 👤 John Marshall
- 👤 Henry B. Clark, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:24
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1902; G05D23/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
275 words
An improved, set back thermostat assembly, having a thermostat, an electrical, (energizable) controllable heat emitting element in thermally-effective juxtaposition relative to said thermostat, and an electrical circuit, connected to said element, said circuit comprising means for (conducting) effecting and interrupting electrical current through said element electively (energizing and) de-energizing said element, wherein the improvement comprises: assembly means of unitized construction; means coupled to said element and said circuit operative in a first normal mode for enabling a (given) controlled amount of current to be conducted through said element, and operative in a second mode for (enabling an amount of current differing from said given amount to be conducted through) electively and randomly disconnecting said current from said element; means enabling said assembly to accommodate a plurality of voltages; (and) electrically-interconnected means for electively and ramdomly disconnecting electrical current from said circuit (initiated on the specific site.) initiated on said unitized assembly; said element-coupled means comprises a diode in series connection with said element; said element-coupled means further comprises a disengageable jumper connection connected in parallel with said diode; said current effecting and interrupting means comprises a solid-state, electronic switching means in series connection with said element; said switching means comprises a solid-state electronic switch, a source of electrical potential, and means electrically interconnecting said source and said switch; said electrically-interconnecting means includes adjustable means for controlling the amount of time during which electrical current is interrupted through said element; said electrically-interconnecting means further includes means for visually signalling an interruption of current from conduct thereof through said element thereby indicating said thermostat assembly is operating without set-back; and said signalling means comprises a light-emitting diode.
Claim 2
Dependent Claim
275 words
An improved, set back thermostat assembly, having a thermostat, an electrical, (energizable) controllable heat emitting element in thermally-effective juxtaposition relative to said thermostat, and an electrical circuit, connected to said element, said circuit comprising means for (conducting) effecting and interrupting electrical current through said element electively (energizing and) de-energizing said element, wherein the improvement comprises: assembly means of unitized construction; means coupled to said element and said circuit operative in a first normal mode for enabling a (given) controlled amount of current to be conducted through said element, and operative in a second mode for (enabling an amount of current differing from said given amount to be conducted through) electively and randomly disconnecting said current from said element; means enabling said assembly to accommodate a plurality of voltages; (and) electrically-interconnected means for electively and ramdomly disconnecting electrical current from said circuit (initiated on the specific site.) initiated on said unitized assembly; said element-coupled means comprises a diode in series connection with said element; said element-coupled means further comprises a disengageable jumper connection connected in parallel with said diode; said current effecting and interrupting means comprises a solid-state, electronic switching means in series connection with said element; said switching means comprises a solid-state electronic switch, a source of electrical potential, and means electrically interconnecting said source and said switch; said electrically-interconnecting means includes adjustable means for controlling the amount of time during which electrical current is interrupted through said element; said electrically-interconnecting means further includes means for visually signalling an interruption of current from conduct thereof through said element thereby indicating said thermostat assembly is operating without set-back; and said signalling means comprises a light-emitting diode.
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) | 1988-06-24 | 1988-12-24 | 1989-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-06-24 | 1992-12-24 | 1993-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-06-24 | 1996-12-24 | 1997-06-25 | $7700.00 | Window Closed / Lapsed |