Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB13428/45A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
THERMA ELECTRIC HEATING Manufacturing CO
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THERMA ELECTRIC HEATING Manufacturing CO
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Application filed by THERMA ELECTRIC HEATING Manufacturing COfiledCriticalTHERMA ELECTRIC HEATING Manufacturing CO
Publication of GB616791ApublicationCriticalpatent/GB616791A/en
G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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Business, Economics & Management
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Emergency Management
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Physics & Mathematics
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General Physics & Mathematics
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Measuring Temperature Or Quantity Of Heat
(AREA)
Abstract
616,791. Electric indicating systems. THERMA ELECTRIC HEATING MANUFACTURING CO., Ltd. May 29, 1945, No. 13428. Convention date, Sept. 3, 1944. [Class 40 (i)] [Also in Group XXXV] In a temperature indicating device the frequency of an oscillating circuit 6, 15, 7, is altered by thermally-produced dimension changes in an element 4, the output of the oscillator being applied through an amplifier 8, 9 to an indicating instrument (not shown), the scale of which is calibrated to measure the element temperature.
GB13428/45A1944-09-031945-05-29An improved electrical apparatus for indicating temperature with or without temperature regulation
ExpiredGB616791A
(en)