GB735493A - Snap action device - Google Patents
Snap action deviceInfo
- Publication number
- GB735493A GB735493A GB1990853A GB1990853A GB735493A GB 735493 A GB735493 A GB 735493A GB 1990853 A GB1990853 A GB 1990853A GB 1990853 A GB1990853 A GB 1990853A GB 735493 A GB735493 A GB 735493A
- Authority
- GB
- United Kingdom
- Prior art keywords
- disc
- slots
- slot
- snap
- pair
- 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
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/48—Snap-action arrangements depending upon deformation of elastic members using buckling of disc springs
Landscapes
- Valve Device For Special Equipments (AREA)
- Multiple-Way Valves (AREA)
Abstract
735,493. Snap-action spring mechanisms. ROBERTSHAW-FULTON CONTROLS CO. July 17, 1953, No. 19908/53. Class 108 (3). [Also in Group XXXVII] A snap-action device comprises a dished circular disc A having a pair of parallel slots 10, 10 positioned one on either side of the centre of the disc, and a transverse slot 14 connecting the slots 10, 10. The slots 10, 10 and 14 define a pair of oppositely disposed spring arms 16, 16 which extend in planes tangential to the surface of the disc A. The angle between the slot 14 and the slots 10, 10 is preferably between 30-45 degrees. The disc A is formed from dies of uniform spherical radius, but the slots 10, 10 and the slot 14, tend to produce distortion in the disc. This results in the formation of opposed sectors (shown shaded) in which given points (e.g. X, X) are of greater disc height than points of equal radii (e.g. Y, Y) in the remaining (unshaded) sectors. As applied to a valve mechanism, one side of the disc A is contacted by a peripherally-disposed knife edge 20 of a thrust element 18. The other side of the disc A engages a ring 26. A valve stem 28 seats on the arms 16. The device may also be used for operating switches.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE523417D BE523417A (en) | 1953-07-17 | ||
| US219489A US2703231A (en) | 1951-04-05 | 1951-04-05 | Snap-action device |
| GB1990853A GB735493A (en) | 1953-07-17 | 1953-07-17 | Snap action device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1990853A GB735493A (en) | 1953-07-17 | 1953-07-17 | Snap action device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB735493A true GB735493A (en) | 1955-08-24 |
Family
ID=10137141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1990853A Expired GB735493A (en) | 1951-04-05 | 1953-07-17 | Snap action device |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE523417A (en) |
| GB (1) | GB735493A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412113A (en) * | 1979-08-10 | 1983-10-25 | Matsushita Electric Industrial Co., Ltd. | Dust venting contact with a non-circular hole |
| GB2194099B (en) * | 1986-07-28 | 1990-01-10 | Otter Controls Ltd | Thermal control units |
-
0
- BE BE523417D patent/BE523417A/xx unknown
-
1953
- 1953-07-17 GB GB1990853A patent/GB735493A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4412113A (en) * | 1979-08-10 | 1983-10-25 | Matsushita Electric Industrial Co., Ltd. | Dust venting contact with a non-circular hole |
| GB2194099B (en) * | 1986-07-28 | 1990-01-10 | Otter Controls Ltd | Thermal control units |
Also Published As
| Publication number | Publication date |
|---|---|
| BE523417A (en) |
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