GB1196861A - Improvements in or relating to Keyboards for Code-Dialling. - Google Patents
Improvements in or relating to Keyboards for Code-Dialling.Info
- Publication number
- GB1196861A GB1196861A GB1716368A GB1716368A GB1196861A GB 1196861 A GB1196861 A GB 1196861A GB 1716368 A GB1716368 A GB 1716368A GB 1716368 A GB1716368 A GB 1716368A GB 1196861 A GB1196861 A GB 1196861A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- contact
- flux
- code
- contact units
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/23—Construction or mounting of dials or of equivalent devices; Means for facilitating the use thereof
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Input From Keyboards Or The Like (AREA)
- Push-Button Switches (AREA)
Abstract
1,196,861. Magnetic keyboards. SIEMENS A.G. 10 April, 1968 [14 April, 1967], No. 17163/68. Heading G4H. [Also in Divisions H4 and H1] A keyboard for generating signal codes comprises a plurality of magnetic flux circuits each containing a magnetic contact unit, a flux guide and a permanent magnet, said flux guide and/or said permanent magnet being common to a plurality of contact units, and a plurality of keys each arranged to complete and break different ones of the magnetic flux circuits. In the form of Fig. 1 there is a separate magnet 5 for each contact unit, magnetic circuits being completed through a common member 7 and one of a number of key-operated code members 9 having parts 10, 11 which contact certain ones of the magnets to actuate the associated contact units 3. In a similar form (Fig. 2, not shown) a single magnet underlies all the contact units and each contact element has a flux guide member co-operating with the code parts of members 9. In another form, Fig. 3, the code member 15 attached to the key has a coded pattern of magnetization and flux guides 20 apply the magnetic field to contact units 3. The coded pattern of magnetization may be transversely of the member 15 instead of longitudinally. In the form of Fig. 6 a single magnet 32 is connected in a number of flux paths through contact units 25, the paths being completed by magnetic inserts 31 in sliding keys 24.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1967S0109334 DE1291382B (en) | 1967-04-14 | 1967-04-14 | Keypad for code selection, in which magnetizable contacts are influenced with the help of changeable permanent magnetic fields |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1196861A true GB1196861A (en) | 1970-07-01 |
Family
ID=7529442
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1716368A Expired GB1196861A (en) | 1967-04-14 | 1968-04-10 | Improvements in or relating to Keyboards for Code-Dialling. |
Country Status (6)
Country | Link |
---|---|
AT (1) | AT289899B (en) |
BE (1) | BE713667A (en) |
CH (1) | CH477078A (en) |
DE (1) | DE1291382B (en) |
GB (1) | GB1196861A (en) |
NL (1) | NL6804545A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045284A (en) * | 1973-08-25 | 1975-04-23 |
-
1967
- 1967-04-14 DE DE1967S0109334 patent/DE1291382B/en not_active Withdrawn
-
1968
- 1968-04-01 NL NL6804545A patent/NL6804545A/xx unknown
- 1968-04-10 GB GB1716368A patent/GB1196861A/en not_active Expired
- 1968-04-11 AT AT359768A patent/AT289899B/en not_active IP Right Cessation
- 1968-04-11 CH CH551568A patent/CH477078A/en not_active IP Right Cessation
- 1968-04-12 BE BE713667D patent/BE713667A/xx unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045284A (en) * | 1973-08-25 | 1975-04-23 | ||
JPS5413585B2 (en) * | 1973-08-25 | 1979-05-31 |
Also Published As
Publication number | Publication date |
---|---|
CH477078A (en) | 1969-08-15 |
NL6804545A (en) | 1968-10-15 |
DE1291382B (en) | 1969-03-27 |
BE713667A (en) | 1968-10-14 |
AT289899B (en) | 1971-05-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PLNP | Patent lapsed through nonpayment of renewal fees |