US3636369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerant compressor control-relay to control two time delays
Assignee: MERCANTILE TEXAS CREDIT Corp
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Filing: 1970-04-23
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Granted: 1972-01-18
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Expires: 1990-04-23
Abstract
Abstract An air conditioner refrigerant compressor control having a first time delay means automatically keeping the compressor deenergized for a predetermined period after each stop cycle, a second time delay means operable under certain conditions to keep the compressor energized for at least a predetermined period at initiation of each start cycle, and a single relay means operable to correctly program the two time delay means.
Inventors
- 👤 Donald G Harter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:37
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/08; H02H7/0816; F; F24; F24F; F24F5/00; F24F5/0007; F24F5/001; F25; F25B; F25B49/00; F25B49/02; F25B49/022; F25B2600/00; F25B2600/23
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
93 words
An air conditioner refrigerant compressor control comprising a controller for initiating the compressor start and stop actions on a substantially nondelayed basis; first time delay means keeping the compressor deenergized for a predetermined period after each stop action; a compressor cutout responsive to low side conditions in the refrigerant system; second time delay means keeping the compressor energized for a predetermined period after each start action irrespective of the condition of the compressor cutout; and a single relay means controlled by the start and stop actions for electrically programming both time delay means.
Claim 2
Dependent Claim
93 words
An air conditioner refrigerant compressor control comprising a controller for initiating the compressor start and stop actions on a substantially nondelayed basis; first time delay means keeping the compressor deenergized for a predetermined period after each stop action; a compressor cutout responsive to low side conditions in the refrigerant system; second time delay means keeping the compressor energized for a predetermined period after each start action irrespective of the condition of the compressor cutout; and a single relay means controlled by the start and stop actions for electrically programming both time delay means.
Claim 3
Dependent Claim
29 words
The control of claim 1 wherein the compressor cutout and second time delay means are in electrical parallelism with one another and in series circuit connection with the controller.
Claim 4
Dependent Claim
29 words
The control of claim 1 wherein the relay means comprises a set of normally closed contacts effective to energize the first time delay means at each compressor stop action.
Claim 5
Dependent Claim
47 words
The control of claim 1 wherein the relay means comprises a set of normally open contacts arranged in electrical parallelism with the first time delay means; said first time delay means and the normally open contacts forming alternate energizer connections for the compressor during the startup period.
Claim 6
Dependent Claim
38 words
The control of claim 1 wherein the controller is series-connected with the first and second time delay means so that an open circuit at the controller deenergizes the compressor irrespective of the condition of the time delay means.
Claim 7
Dependent Claim
34 words
The control of claim 1 wherein the first time delay means comprises a solid-state device operable to provide an open load circuit when initially provided with an input energizer signal by the relay means.
Claim 8
Dependent Claim
34 words
The control of claim 1 wherein the second time delay means comprises a solid-state device operable to provide a closed load circuit when initially provided with an input energizer signal by the relay means.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |