GB307510A - Improvements in and relating to electric switches - Google Patents

Improvements in and relating to electric switches

Info

Publication number
GB307510A
GB307510A GB7746/29A GB774629A GB307510A GB 307510 A GB307510 A GB 307510A GB 7746/29 A GB7746/29 A GB 7746/29A GB 774629 A GB774629 A GB 774629A GB 307510 A GB307510 A GB 307510A
Authority
GB
United Kingdom
Prior art keywords
relating
electric switches
switches
electric
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
GB7746/29A
Other languages
English (en)
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB307510A publication Critical patent/GB307510A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/26—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch
    • H01H31/28—Air-break switches for high tension without arc-extinguishing or arc-preventing means with movable contact that remains electrically connected to one line in open position of switch with angularly-movable contact
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/502—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position the action of the contact pressure spring becoming active only after engagement of the contacts
GB7746/29A 1928-03-10 1929-03-09 Improvements in and relating to electric switches Expired GB307510A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US260650A US1832695A (en) 1928-03-10 1928-03-10 Electric switch

Publications (1)

Publication Number Publication Date
GB307510A true GB307510A (en) 1930-06-10

Family

ID=22990053

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7746/29A Expired GB307510A (en) 1928-03-10 1929-03-09 Improvements in and relating to electric switches

Country Status (4)

Country Link
US (1) US1832695A (fr)
DE (1) DE508325C (fr)
FR (1) FR671087A (fr)
GB (1) GB307510A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2620410A (en) * 1948-07-09 1952-12-02 Kearney James R Corp Electrical switch
CN112289620B (zh) * 2019-07-23 2023-12-05 武汉倍诺德开关有限公司 一种三工位隔离开关

Also Published As

Publication number Publication date
US1832695A (en) 1931-11-17
FR671087A (fr) 1929-12-09
DE508325C (de) 1930-09-26

Similar Documents

Publication Publication Date Title
GB320857A (en) Improvements in and relating to electric switches
GB293018A (en) Improvements in and relating to electric switches
GB306822A (en) Improvements in or relating to electric switches
GB319861A (en) Improvements in or relating to electrical switches
GB303835A (en) Improvements in and relating to electric switches
GB311822A (en) Improvements in and relating to electric switches
GB312365A (en) Improvements in and relating to electric switches
GB307510A (en) Improvements in and relating to electric switches
GB329445A (en) Improvements in and relating to electric switches
GB305180A (en) Improvements in and relating to electric switches
GB312456A (en) Improvements in and relating to electric switches
GB318262A (en) Improvements in and relating to electric switches
GB311528A (en) Improvements in and relating to electric switches
GB309043A (en) Improvements in and relating to electric switches
GB317167A (en) Improvements in and relating to electric switches
GB293776A (en) Improvements in and relating to electric switches
GB317203A (en) Improvements in and relating to electric switches
GB322443A (en) Improvements in and relating to electric switches
GB338010A (en) Improvements in and relating to electric switches
GB305938A (en) Improvements in and relating to electric switches
GB308817A (en) Improvements in and relating to electric switches
GB319189A (en) Improvements in and relating to electric switches
GB318636A (en) Improvements in and relating to electric switches
GB318627A (en) Improvements in and relating to electric switches
GB326768A (en) Improvements in or relating to electric switches