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AU7983975A - Improvements in or relating toa failsafe control - Google Patents

Improvements in or relating toa failsafe control

Info

Publication number
AU7983975A
AU7983975A AU79839/75A AU7983975A AU7983975A AU 7983975 A AU7983975 A AU 7983975A AU 79839/75 A AU79839/75 A AU 79839/75A AU 7983975 A AU7983975 A AU 7983975A AU 7983975 A AU7983975 A AU 7983975A
Authority
AU
Australia
Prior art keywords
failsafe control
relating toa
toa
relating
failsafe
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.)
Expired
Application number
AU79839/75A
Other versions
AU491976B2 (en
Inventor
Julius Holtkamp Calvin
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Application granted granted Critical
Publication of AU7983975A publication Critical patent/AU7983975A/en
Publication of AU491976B2 publication Critical patent/AU491976B2/en
Expired 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
    • H01H35/26—Details
    • H01H35/2671—Means to detect leaks in the pressure sensitive element
    • 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
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0019—Circuit arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Temperature (AREA)
  • Safety Devices In Control Systems (AREA)
  • Thermally Actuated Switches (AREA)
AU79839/75A 1974-04-11 1975-04-04 Improvements in or relating toa failsafe control Expired AU491976B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
USUS460253 1974-04-11
US46025374 US3924142A (en) 1974-04-11 1974-04-11 Fail-safe control

Publications (2)

Publication Number Publication Date
AU7983975A true AU7983975A (en) 1976-10-07
AU491976B2 AU491976B2 (en) 1976-10-07

Family

ID=

Also Published As

Publication number Publication date
IT1029063B (en) 1979-03-10
ZA751492B (en) 1976-02-25
ES436405A1 (en) 1977-04-01
CA1031399A (en) 1978-05-16
GB1479825A (en) 1977-07-13
PH11016A (en) 1977-10-25
US3924142A (en) 1975-12-02
JPS50140667A (en) 1975-11-11

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