GB789752A - Improvements in or relating to enclosed electric switches - Google Patents
Improvements in or relating to enclosed electric switchesInfo
- Publication number
- GB789752A GB789752A GB1779855A GB1779855A GB789752A GB 789752 A GB789752 A GB 789752A GB 1779855 A GB1779855 A GB 1779855A GB 1779855 A GB1779855 A GB 1779855A GB 789752 A GB789752 A GB 789752A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plunger
- casing
- bellows
- june
- switch
- 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
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
- H01H13/063—Casings hermetically closed by a diaphragm through which passes an actuating member
-
- 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
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
-
- 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
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
- H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
-
- 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
- H01H13/02—Details
- H01H13/04—Cases; Covers
- H01H13/06—Dustproof, splashproof, drip-proof, waterproof or flameproof casings
- H01H2013/066—Dustproof, splashproof, drip-proof, waterproof or flameproof casings using bellows
Landscapes
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
789,752. Retractive switches. SMITH & SONS (ENGLAND), Ltd., S. June 21, 1956 [June 21, 1955], No. 17798/55. Class 38 (5). A microswitch 17 enclosed in a casing 10 is operated by a plunger 14 which passes through and is sealed in a flexible metal element sealed to the casing 10 to render the casing gas tight. As shown a metal bellows 25 is soldered or brazed to the plunger and casing 10, the bellows acting as the restoring spring for the plunger. A screw 15 engages the microswitch blade 18, and stops 16, 23 limit the movement of the plunger. A spring-loaded press button 30 is slidably mounted in the plunger 14 and provides an overtravel safety arrangement. The switch may be filled with an inert atmosphere. In a modification (Fig. 5, not shown) the bellows is replaced by a diaphragm. The switch is suitable for use in machine tools.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1779855A GB789752A (en) | 1955-06-21 | 1955-06-21 | Improvements in or relating to enclosed electric switches |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1779855A GB789752A (en) | 1955-06-21 | 1955-06-21 | Improvements in or relating to enclosed electric switches |
Publications (1)
Publication Number | Publication Date |
---|---|
GB789752A true GB789752A (en) | 1958-01-29 |
Family
ID=10101402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1779855A Expired GB789752A (en) | 1955-06-21 | 1955-06-21 | Improvements in or relating to enclosed electric switches |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB789752A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0600634A1 (en) * | 1992-11-30 | 1994-06-08 | Burgess Micro Switch Company Ltd | Electric switch |
US5626222A (en) * | 1995-10-06 | 1997-05-06 | Ncr Corp | Force controllable shielded mechanical switch actuators |
-
1955
- 1955-06-21 GB GB1779855A patent/GB789752A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0600634A1 (en) * | 1992-11-30 | 1994-06-08 | Burgess Micro Switch Company Ltd | Electric switch |
US5626222A (en) * | 1995-10-06 | 1997-05-06 | Ncr Corp | Force controllable shielded mechanical switch actuators |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB961147A (en) | Improvements in pressure-responsive switches | |
GB848000A (en) | Improvements in or relating to push-rod electric switches | |
GB893047A (en) | Improvements in or relating to illuminated push-button-type electric switches | |
GB848538A (en) | Improvements relating to electric switches | |
GB789752A (en) | Improvements in or relating to enclosed electric switches | |
GB826313A (en) | Electric toggle switches | |
GB856222A (en) | A hermetically sealed micro-switch | |
GB503504A (en) | Improvements in snap-action electric switches | |
GB1365279A (en) | 1365280kansai paint co ltd and wako pure chemical industries ltd azo valeronitriles | |
GB796622A (en) | Improvements in and relating to electric switches | |
GB739226A (en) | Improved electric hand machine tool | |
GB1127272A (en) | Improvements in or relating to switch actuating means | |
GB895108A (en) | Switch actuating mechanism | |
GB798387A (en) | Improvements in and relating to visual indicating devices for electric switches | |
GB834719A (en) | Safety x-ray tube housing | |
GB884066A (en) | Improvements in or relating to pressure responsive electrical relays | |
GB903373A (en) | Push-button electric switch | |
GB807522A (en) | Improvements in or relating to snap-action electric switches | |
GB783885A (en) | Improvements relating to snap-action electric circuit interrupting devices | |
GB819002A (en) | Improvements in and relating to electric switch gear and contacts therefor | |
GB713715A (en) | Hermetically sealed electric switch | |
GB958732A (en) | Snap acting mercury switch | |
ES262950A1 (en) | Current interrupting switch having a movable contact carried by a magnetic armature | |
GB610762A (en) | Improvements in and relating to quick make-and-break electric switches | |
GB680442A (en) | Improvements in and relating to electric switchgear cases |