DE271779C - - Google Patents

Info

Publication number
DE271779C
DE271779C DENDAT271779D DE271779DA DE271779C DE 271779 C DE271779 C DE 271779C DE NDAT271779 D DENDAT271779 D DE NDAT271779D DE 271779D A DE271779D A DE 271779DA DE 271779 C DE271779 C DE 271779C
Authority
DE
Germany
Prior art keywords
mercury
tubes
spring
tube
switching
Prior art date
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.)
Active
Application number
DENDAT271779D
Other languages
German (de)
English (en)
Publication of DE271779C publication Critical patent/DE271779C/de
Active legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/36—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by curled flexible tube, e.g. Bourdon tube
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
    • G01L19/08—Means for indicating or recording, e.g. for remote indication
    • G01L19/12—Alarms or signals
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/19—Control of temperature characterised by the use of electric means
    • G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/14—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field
    • H02P9/16—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step
    • H02P9/18—Arrangements for controlling electric generators for the purpose of obtaining a desired output by variation of field due to variation of ohmic resistance in field circuit, using resistances switched in or out of circuit step by step the switching being caused by a servomotor, measuring instrument, or relay

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Measuring Fluid Pressure (AREA)
DENDAT271779D Active DE271779C (enrdf_load_stackoverflow)

Publications (1)

Publication Number Publication Date
DE271779C true DE271779C (enrdf_load_stackoverflow)

Family

ID=528401

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT271779D Active DE271779C (enrdf_load_stackoverflow)

Country Status (1)

Country Link
DE (1) DE271779C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139074A (en) * 1991-04-03 1992-08-18 Kelley Company Inc. Industrial door having flexible and releasable beam
US5222541A (en) * 1992-07-22 1993-06-29 Kelley Company, Inc. Industrial door having releasable beam and tension bracket retention mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5139074A (en) * 1991-04-03 1992-08-18 Kelley Company Inc. Industrial door having flexible and releasable beam
US5222541A (en) * 1992-07-22 1993-06-29 Kelley Company, Inc. Industrial door having releasable beam and tension bracket retention mechanism

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