GB292922A - Improvements in or relating to electrical circuit controlling apparatus - Google Patents

Improvements in or relating to electrical circuit controlling apparatus

Info

Publication number
GB292922A
GB292922A GB18358/28A GB1835828A GB292922A GB 292922 A GB292922 A GB 292922A GB 18358/28 A GB18358/28 A GB 18358/28A GB 1835828 A GB1835828 A GB 1835828A GB 292922 A GB292922 A GB 292922A
Authority
GB
United Kingdom
Prior art keywords
relating
electrical circuit
controlling apparatus
circuit controlling
electrical
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
GB18358/28A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Publication of GB292922A publication Critical patent/GB292922A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/142—Electrothermal mechanisms actuated due to change of magnetic permeability
GB18358/28A 1927-06-24 1928-06-25 Improvements in or relating to electrical circuit controlling apparatus Expired GB292922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201055A US1765305A (en) 1927-06-24 1927-06-24 Thermal relay

Publications (1)

Publication Number Publication Date
GB292922A true GB292922A (en) 1929-02-21

Family

ID=22744287

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18358/28A Expired GB292922A (en) 1927-06-24 1928-06-25 Improvements in or relating to electrical circuit controlling apparatus

Country Status (2)

Country Link
US (1) US1765305A (en)
GB (1) GB292922A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516538A (en) * 1948-05-05 1950-07-25 Westinghouse Electric Corp Protective control system
US3210607A (en) * 1961-09-07 1965-10-05 Texas Instruments Inc Ferroelectric capacitor apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516538A (en) * 1948-05-05 1950-07-25 Westinghouse Electric Corp Protective control system
US3210607A (en) * 1961-09-07 1965-10-05 Texas Instruments Inc Ferroelectric capacitor apparatus

Also Published As

Publication number Publication date
US1765305A (en) 1930-06-17

Similar Documents

Publication Publication Date Title
GB308615A (en) Improvements in and relating to electric circuit controlling apparatus
GB292922A (en) Improvements in or relating to electrical circuit controlling apparatus
GB295329A (en) Improvements in or relating to electrical circuit interrupting devices
GB292923A (en) Improvements in or relating to electrical controlling devices
GB300276A (en) Improvements in or relating to protective devices for electrical apparatus
GB317186A (en) Improvements in or relating to electric circuit controlling apparatus
GB331390A (en) Improvements in or relating to electric circuit control apparatus
GB302286A (en) Improvements in or relating to electrical control devices
GB302048A (en) Improvements in or relating to electric circuit breakers
GB300575A (en) Improvements in or relating to electrical switches
GB334602A (en) Improvements in or relating to the earthing of electrical apparatus
GB302987A (en) Improvements in electric circuit breakers
GB297033A (en) Improvements in or relating to electrical switch-boxes
GB302433A (en) Improvements in switches for electric circuits
GB322316A (en) Improvements in or relating to electrical apparatus
GB333676A (en) Improvements in electric circuit controlling apparatus
GB324720A (en) Improvements in or relating to controlling apparatus for electric circuit-breakers
GB298182A (en) Improvements in or relating to electric switches
GB296879A (en) Improvements in or relating to electrical switchgear
GB302024A (en) Improvements in or relating to electric circuit breakers
GB301917A (en) Improvements in or relating to electric circuit interrupters
GB307995A (en) Improvements in or relating to electrical relays
GB301820A (en) Improvements in and relating to time switches for electric circuits
GB305957A (en) Improvements in electrical switches
GB292475A (en) Improvements in or relating to contact fingers for electrical apparatus