FR633423A - Device preventing the simultaneous operation of two or more buttons or keys used in certain electrical appliances to actuate contacts - Google Patents
Device preventing the simultaneous operation of two or more buttons or keys used in certain electrical appliances to actuate contactsInfo
- Publication number
- FR633423A FR633423A FR633423DA FR633423A FR 633423 A FR633423 A FR 633423A FR 633423D A FR633423D A FR 633423DA FR 633423 A FR633423 A FR 633423A
- Authority
- FR
- France
- Prior art keywords
- buttons
- electrical appliances
- simultaneous operation
- keys used
- certain 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0255—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in welding
- B23K35/0261—Rods, electrodes, wires
- B23K35/0272—Rods, electrodes, wires with more than one layer of coating or sheathing material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/72—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard wherein the switch has means for limiting the number of operating members that can concurrently be in the actuated position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR633423T | 1926-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR633423A true FR633423A (en) | 1928-01-28 |
Family
ID=8992883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR633423D Expired FR633423A (en) | 1926-08-23 | 1926-08-23 | Device preventing the simultaneous operation of two or more buttons or keys used in certain electrical appliances to actuate contacts |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR633423A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2773139A (en) * | 1952-11-04 | 1956-12-04 | Bryant Electric Co | Switch |
-
1926
- 1926-08-23 FR FR633423D patent/FR633423A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2773139A (en) * | 1952-11-04 | 1956-12-04 | Bryant Electric Co | Switch |
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