Patent US4103689A successfully refreshed from Google Patents.
US3586869A
Expired / Lapsed
US
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Sequencing control unit
Assignee: Honeywell Inc
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Filing: 1969-09-08
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Granted: 1971-06-22
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Expires: 1989-09-08
Abstract
Abstract A sequencing type of control unit means particularly useful for sequencing stages of electric heat in response to a conditionsensing means or thermostat is disclosed. The sequencing type of control unit has an increasing current flow created within it in response to a variation of the condition-sensing thermostat, and this increasing current flow is directed to a number of bistable electronic switches. Each of the electronic switches is capable of adding a stage of electric heat as the switches are operated. The electronic switches are separated by diodes and provide the necessary differential so that the stages of electric heat are added or subtracted in response to a change in demand of the condition-sensing thermostat.
Inventors
- 👤 Arlon D Kompelien
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:58
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; G05D23/1912
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
192 words
A control unit Means that responds to condition-sensing means wherein an increasing condition deviation from a set condition at said condition-sensing means causes a varying current flow in said control unit means, including: control unit means adapted to sequentially energize a plurality of condition-changing means, and further adapted to be connected to condition-sensing means with said control unit means having an increasing control current flow as said sensing means deviates from a set condition; said control unit means including first current-operated bistable switch means which switches at a set control current level and then changes to and remains switched at a lower fixed current level; said switch means being connected to receive said control current flow and responsively energizing a first of said condition-changing means; said first bistable switch means then remaining switched at said lower current level; asymmetric current-conducting means and further bistable switch means connected to said first bistable switch means to receive control current flow above said switched current level of said first bistable switch means after said switch means switches; said further bistable switch means connected to energize further condition-changing means as said further bistable switch means switch.
Claim 2
Dependent Claim
192 words
A control unit Means that responds to condition-sensing means wherein an increasing condition deviation from a set condition at said condition-sensing means causes a varying current flow in said control unit means, including: control unit means adapted to sequentially energize a plurality of condition-changing means, and further adapted to be connected to condition-sensing means with said control unit means having an increasing control current flow as said sensing means deviates from a set condition; said control unit means including first current-operated bistable switch means which switches at a set control current level and then changes to and remains switched at a lower fixed current level; said switch means being connected to receive said control current flow and responsively energizing a first of said condition-changing means; said first bistable switch means then remaining switched at said lower current level; asymmetric current-conducting means and further bistable switch means connected to said first bistable switch means to receive control current flow above said switched current level of said first bistable switch means after said switch means switches; said further bistable switch means connected to energize further condition-changing means as said further bistable switch means switch.
Claim 3
Dependent Claim
19 words
A control unit means as described in claim 1 wherein said current-operated bistable switch means are semiconductor switch means.
Claim 4
Dependent Claim
78 words
A control unit means as described in claim 2 wherein said semiconductor switch means each effectively includes a complementary pair of transistors with a first of said transistors initially biased to a conductive state while a second transistor of said pair is connected to receive said control current flow thereby causing said first transistor to become nonconductive when said second transistor is in a conductive state to in turn provide an output voltage to operate said condition-changing means.
Claim 5
Dependent Claim
17 words
A control unit means as described in claim 1 wherein said asymmetric current-conducting means is a diode.
Claim 6
Dependent Claim
92 words
A control unit means as described in claim 1 wherein said asymmetric current-conducting means is a diode and said current-operated bistable switch means are semiconductor switch means each effectively including a complementary pair of transistors with a first of said transistors initially biased to a conductive state while a second transistor of said pair is connected to receive said control current flow thereby causing said first transistor to become nonconductive when said second transistor is in a conductive state to in turn provide an output voltage to operate said condition changing means.
Claim 7
Dependent Claim
62 words
A control unit means as described in claim 1 wherein said control unit means is electric heat sequencing unit means adapted to sequentially energize a plurality of electric heaters and further adapted to be connected to thermostat means with said electric heat sequencing unit means having increasing control current flow as said thermostat means responds to a deviation from a set temperature.
Claim 8
Dependent Claim
21 words
An electric heat sequencing unit means as described in claim 6 wherein said current-operated bistable switch means are semiconductor switch means.
Claim 9
Dependent Claim
80 words
An electric heat sequencing unit means as described in claim 7 wherein said semiconductor switch means each effectively includes a complementary pair of transistors with a first of said transistors initially biased to a conductive state while a second transistor of said pair is connected to receive said control current flow thereby causing said first transistor to become nonconductive when said second transistor is in a conductive state to in turn provide an output voltage to energize said electric heaters.
Claim 10
Dependent Claim
19 words
An electric heat sequencing unit means as described in claim 6 wherein said asymmetric current-conducting means is a diode.
Claim 11
Dependent Claim
93 words
An electric heat sequencing unit means as described in claim 9 wherein said asymmetric current-conducting means is a diode and said current-operated bistable switch means are semiConductor switch means each effectively including a complementary pair of transistors with a first of said transistors initially biased to a conductive state while a second transistor of said pair is connected to receive said control current flow thereby causing said first transistor to become nonconductive when said second transistor is in a conductive state to in turn provide an output voltage to operate said electric heaters.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |