GB915475A - Push buttons - Google Patents
Push buttonsInfo
- Publication number
- GB915475A GB915475A GB3376360A GB3376360A GB915475A GB 915475 A GB915475 A GB 915475A GB 3376360 A GB3376360 A GB 3376360A GB 3376360 A GB3376360 A GB 3376360A GB 915475 A GB915475 A GB 915475A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- hook
- rest
- button
- catch
- 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
- 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
- H01H13/74—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 each contact set returning to its original state only upon actuation of another of the operating members
Landscapes
- Push-Button Switches (AREA)
Abstract
915,475. Press-button retractive switches; switches held set and freed mechanically. ERICSSON TELEPHONES Ltd. July 27, 1961 [Oct. 1, 1960], No. 33763/60. Class 38 (5). [Also in Group XXV] A switch actuator comprises a first plunger 1, directly operable by a push-button (not shown) and carrying a resilient hook-shaped member 5, and a second plunger 2 carrying a spring latch device 6 arranged to be engaged by the hook 5. Initial operation of the plunger 1 from its rest position (Fig. 5) causes a portion 10 of the hook 5 to wipe downwards across the latch 6 and thus to deflect the hook 5 (Fig. 2). Plunger 1 thus moves to its operative position while plunger 2 remains at rest. On release of the push-button, plunger 1 rises by spring means to an intermediate position in which the hook 5 is just above plunger 2 (Fig. 4); a catch stops plunger 1 from rising further. Re-operation of plunger 1 causes the hook 5 to engage plunger 2 and the two plungers move together. When required, plunger 1 can be returned to its rest position by releasing the catch. Each plunger carries a cam surface 3, 4 which can, conveniently, operate a contact spring pile-up of a telephone instrument, the catch then being released by the receiver rest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3376360A GB915475A (en) | 1960-10-01 | 1960-10-01 | Push buttons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3376360A GB915475A (en) | 1960-10-01 | 1960-10-01 | Push buttons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB915475A true GB915475A (en) | 1963-01-16 |
Family
ID=10357134
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3376360A Expired GB915475A (en) | 1960-10-01 | 1960-10-01 | Push buttons |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB915475A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061369A (en) * | 1974-07-08 | 1977-12-06 | Itw Limited | Catches |
-
1960
- 1960-10-01 GB GB3376360A patent/GB915475A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061369A (en) * | 1974-07-08 | 1977-12-06 | Itw Limited | Catches |
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