US3143167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature controlled enclosure for testing purposes
Assignee: Tung Sol Electric Inc
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Filing: 1961-05-19
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Granted: 1964-08-04
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Expires: 1981-05-19
Abstract
No abstract record available.
Inventors
- 👤 Vieth Adolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:04
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906; G05D23/1912; G05D23/1919; G05D23/1927; G05D23/193; G05D23/1931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
156 words
A TEMPERATURE CONTROLLED ENCLOSURE COMPRISING, A FIRST METAL WALL SURROUNDING THE ENCLOSURE SPACE, A HEATING MEANS IN THERMAL CONTACT WITH SAID FIRST WALL FOR RAISING THE TEMPERATURE OF THE ENCLOSURE, A SECOND METAL WALL SURROUNDING THE HEATING MEANS, COOLING MEANS IN THERMAL CONTACT WITH SAID SECOND WALL FOR LOWERING THE TEMPERATURE OF THE ENCLOSURE, A FIRST TEMPERATURE-SENSITIVE ELEMENT IN THERMAL CONTACT WITH SAID FIRST METAL WALL, A SECOND TEMPERATURE-SENSITIVE ELEMENT IN THERMAL CONTACT WITH SAID SECOND METAL WALL, AND A CONTROL CIRCUIT CONNECTED BETWEEN SAID ELEMENTS AND SAID HEATING AND COOLING MEANS FOR ENERGIZING THE HEATING AND COOLING MEANS SELECTIVELY TO PRODUCE A DESIRED TEMPERATURE WITHIN THE ENCLOSURE, SAID CONTROL CIRCUIT INCLUDING A BRIDGE, AN AMPLIFIER, AND A SWITCHING MEANS FOR CONNECTING THE HEATING MEANS TO A SOURCE OF POWER WHEN SAID FIRST TEMPERATURE-SENSITIVE ELEMENT IS CONNECTED TO THE BRIDGE AND FOR ACTIVATING THE COOLING MEANS WHEN SAID SECOND TEMPERATURE-SENSITIVE ELEMENT IS CONNECTED TO THE BRIDGE.
Claim 2
Dependent Claim
156 words
A TEMPERATURE CONTROLLED ENCLOSURE COMPRISING, A FIRST METAL WALL SURROUNDING THE ENCLOSURE SPACE, A HEATING MEANS IN THERMAL CONTACT WITH SAID FIRST WALL FOR RAISING THE TEMPERATURE OF THE ENCLOSURE, A SECOND METAL WALL SURROUNDING THE HEATING MEANS, COOLING MEANS IN THERMAL CONTACT WITH SAID SECOND WALL FOR LOWERING THE TEMPERATURE OF THE ENCLOSURE, A FIRST TEMPERATURE-SENSITIVE ELEMENT IN THERMAL CONTACT WITH SAID FIRST METAL WALL, A SECOND TEMPERATURE-SENSITIVE ELEMENT IN THERMAL CONTACT WITH SAID SECOND METAL WALL, AND A CONTROL CIRCUIT CONNECTED BETWEEN SAID ELEMENTS AND SAID HEATING AND COOLING MEANS FOR ENERGIZING THE HEATING AND COOLING MEANS SELECTIVELY TO PRODUCE A DESIRED TEMPERATURE WITHIN THE ENCLOSURE, SAID CONTROL CIRCUIT INCLUDING A BRIDGE, AN AMPLIFIER, AND A SWITCHING MEANS FOR CONNECTING THE HEATING MEANS TO A SOURCE OF POWER WHEN SAID FIRST TEMPERATURE-SENSITIVE ELEMENT IS CONNECTED TO THE BRIDGE AND FOR ACTIVATING THE COOLING MEANS WHEN SAID SECOND TEMPERATURE-SENSITIVE ELEMENT IS CONNECTED TO THE BRIDGE.
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |