US2711650A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Weisheit
Assignee: —
•
Filing: —
•
Granted: 1955-06-28
•
Expires: 1972-06-28
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:04
CPC Classifications
G; G01; G01K; G01K3/00; G01K3/08; G01K3/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
AN ELECTRONIC THERMOMETER, COMPRISING A WHEATSTONE BRIDGE HAVING A MEASURING PART, CONSTITUTED BY TWO BRANCHES OF THE BRIDGE CIRCUIT AND A CONTROL PART CONSTITUTED BY THE OTHER TWO BRANCHES OF THE BRIDGE CIRCUIT TWO TEMPERATURE FEELERS ARRANGED IN SAID MEASURING PART, SAID CONTROL PART BEING CONSTITUTED BY A RESISTOR ARRANGEMENT FORMED AS A GRADUATING DIVIDER AND BY A RESISTOR HAVING AN ADJUSTABLE TAPPING, AND AN ELECTRONIC VALVE HAVING A GRID WHICH IS CONNECTED TO A POINT ON THE MEASURING PART BETWEEN SAID TEMPERATURE FEELERS, A CATHODE CONNECTED TO SAID TAPPING, AND AN ANODE, AN AMMETER GRADUATED IN TEMPERATURE DEGREES, A SOURCE OF DIRECT-CURRENT VOLTAGE HAVING A NEGATIVE AND A POSITIVE POLE, SAID POLES BEING RESPECTIVELY CONNECTED TO THE TWO JUNCTION POINTS BETWEEN SAID MEASURING AND CONTROL PARTS, AN ADJUSTABLE RESISTOR IN THE CONNECTION BETWEEN SAID SOURCE AND ONE OF SAID JUNCTIONS, SAID ANODE BEING CONNECTED THROUGH SAID AMMETER TO THAT ONE OF SAID JUNCTIONS TO WHICH THE POSITIVE POLE OF SAID SOURCE IS CONNECTED.
Claim 2
Dependent Claim
164 words
AN ELECTRONIC THERMOMETER, COMPRISING A WHEATSTONE BRIDGE HAVING A MEASURING PART, CONSTITUTED BY TWO BRANCHES OF THE BRIDGE CIRCUIT AND A CONTROL PART CONSTITUTED BY THE OTHER TWO BRANCHES OF THE BRIDGE CIRCUIT TWO TEMPERATURE FEELERS ARRANGED IN SAID MEASURING PART, SAID CONTROL PART BEING CONSTITUTED BY A RESISTOR ARRANGEMENT FORMED AS A GRADUATING DIVIDER AND BY A RESISTOR HAVING AN ADJUSTABLE TAPPING, AND AN ELECTRONIC VALVE HAVING A GRID WHICH IS CONNECTED TO A POINT ON THE MEASURING PART BETWEEN SAID TEMPERATURE FEELERS, A CATHODE CONNECTED TO SAID TAPPING, AND AN ANODE, AN AMMETER GRADUATED IN TEMPERATURE DEGREES, A SOURCE OF DIRECT-CURRENT VOLTAGE HAVING A NEGATIVE AND A POSITIVE POLE, SAID POLES BEING RESPECTIVELY CONNECTED TO THE TWO JUNCTION POINTS BETWEEN SAID MEASURING AND CONTROL PARTS, AN ADJUSTABLE RESISTOR IN THE CONNECTION BETWEEN SAID SOURCE AND ONE OF SAID JUNCTIONS, SAID ANODE BEING CONNECTED THROUGH SAID AMMETER TO THAT ONE OF SAID JUNCTIONS TO WHICH THE POSITIVE POLE OF SAID SOURCE IS CONNECTED.
References Cited (Backward Citations)
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Cited
US1951276A
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US2017011A
Cited
US2135513A
Cited
US2444410A
Cited
GB597420A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-06-27 | 1958-12-27 | 1959-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-06-27 | 1962-12-27 | 1963-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-06-27 | 1966-12-27 | 1967-06-28 | $7700.00 | Window Closed / Lapsed |