DE2120121A1 - Wahltastatur zum Aussenden von Codesignalen für Endgeräte in Informationsverarbeitungsanlagen, insbesondere für Fernsprechapparate in Fernsprechanlagen - Google Patents
Wahltastatur zum Aussenden von Codesignalen für Endgeräte in Informationsverarbeitungsanlagen, insbesondere für Fernsprechapparate in FernsprechanlagenInfo
- Publication number
- DE2120121A1 DE2120121A1 DE19712120121 DE2120121A DE2120121A1 DE 2120121 A1 DE2120121 A1 DE 2120121A1 DE 19712120121 DE19712120121 DE 19712120121 DE 2120121 A DE2120121 A DE 2120121A DE 2120121 A1 DE2120121 A1 DE 2120121A1
- Authority
- DE
- Germany
- Prior art keywords
- circuit board
- keypad
- contact
- keys
- cover
- 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.)
- Pending
Links
- 230000010365 information processing Effects 0.000 title claims description 4
- 210000002105 tongue Anatomy 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 210000001331 nose Anatomy 0.000 claims description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- SWELZOZIOHGSPA-UHFFFAOYSA-N palladium silver Chemical compound [Pd].[Ag] SWELZOZIOHGSPA-UHFFFAOYSA-N 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- 241001501536 Alethe Species 0.000 description 1
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 101100394073 Caenorhabditis elegans hil-1 gene Proteins 0.000 description 1
- 101150073618 ST13 gene Proteins 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
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)
- Push-Button Switches (AREA)
- Telephone Set Structure (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DD14810870 | 1970-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2120121A1 true DE2120121A1 (de) | 1971-12-30 |
Family
ID=5482603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19712120121 Pending DE2120121A1 (de) | 1970-06-12 | 1971-04-24 | Wahltastatur zum Aussenden von Codesignalen für Endgeräte in Informationsverarbeitungsanlagen, insbesondere für Fernsprechapparate in Fernsprechanlagen |
Country Status (5)
| Country | Link |
|---|---|
| BG (1) | BG22048A1 (enrdf_load_stackoverflow) |
| CS (1) | CS154693B2 (enrdf_load_stackoverflow) |
| DE (1) | DE2120121A1 (enrdf_load_stackoverflow) |
| HU (1) | HU162595B (enrdf_load_stackoverflow) |
| SU (1) | SU496693A1 (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2351367A1 (de) * | 1972-10-16 | 1974-05-09 | Sits Soc It Telecom Siemens | Tastatur fuer eine waehlvorrichtung in einem fernmeldegeraet |
| USRE30923E (en) | 1973-01-02 | 1982-05-04 | Bowmar Instrument Corporation | Calculator keyboard switch with disc spring contact and printed circuit board |
-
1971
- 1971-04-24 DE DE19712120121 patent/DE2120121A1/de active Pending
- 1971-05-05 BG BG1747671A patent/BG22048A1/xx unknown
- 1971-05-31 SU SU1661179A patent/SU496693A1/ru active
- 1971-06-11 HU HUII000063 patent/HU162595B/hu unknown
- 1971-06-11 CS CS431971A patent/CS154693B2/cs unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2351367A1 (de) * | 1972-10-16 | 1974-05-09 | Sits Soc It Telecom Siemens | Tastatur fuer eine waehlvorrichtung in einem fernmeldegeraet |
| FR2203238A1 (enrdf_load_stackoverflow) * | 1972-10-16 | 1974-05-10 | Sits Soc It Telecom Siemens | |
| USRE30923E (en) | 1973-01-02 | 1982-05-04 | Bowmar Instrument Corporation | Calculator keyboard switch with disc spring contact and printed circuit board |
Also Published As
| Publication number | Publication date |
|---|---|
| SU496693A1 (ru) | 1975-12-25 |
| BG22048A1 (enrdf_load_stackoverflow) | 1976-11-25 |
| HU162595B (enrdf_load_stackoverflow) | 1973-03-28 |
| CS154693B2 (enrdf_load_stackoverflow) | 1974-04-30 |
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