GB329445A - Improvements in and relating to electric switches - Google Patents
Improvements in and relating to electric switchesInfo
- Publication number
- GB329445A GB329445A GB972729A GB972729A GB329445A GB 329445 A GB329445 A GB 329445A GB 972729 A GB972729 A GB 972729A GB 972729 A GB972729 A GB 972729A GB 329445 A GB329445 A GB 329445A
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
- H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
- H01H1/10—Laminated contacts with divided contact surface
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB972729A GB329445A (en) | 1929-03-26 | 1929-03-26 | Improvements in and relating to electric switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB972729A GB329445A (en) | 1929-03-26 | 1929-03-26 | Improvements in and relating to electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB329445A true GB329445A (en) | 1930-05-22 |
Family
ID=9877591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB972729A Expired GB329445A (en) | 1929-03-26 | 1929-03-26 | Improvements in and relating to electric switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB329445A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE765077C (en) * | 1940-05-11 | 1954-09-27 | Aeg | Crank switch for precision measurements |
US2786104A (en) * | 1952-11-04 | 1957-03-19 | Muirhead & Co Ltd | Rotary stud switches |
DE1118860B (en) * | 1958-05-02 | 1961-12-07 | Smit & Willem & Co Nv | Step switch for high voltage for step transformers |
-
1929
- 1929-03-26 GB GB972729A patent/GB329445A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE765077C (en) * | 1940-05-11 | 1954-09-27 | Aeg | Crank switch for precision measurements |
US2786104A (en) * | 1952-11-04 | 1957-03-19 | Muirhead & Co Ltd | Rotary stud switches |
DE1118860B (en) * | 1958-05-02 | 1961-12-07 | Smit & Willem & Co Nv | Step switch for high voltage for step transformers |
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