SE328049B - - Google Patents
Info
- Publication number
- SE328049B SE328049B SE09612/67*A SE961267A SE328049B SE 328049 B SE328049 B SE 328049B SE 961267 A SE961267 A SE 961267A SE 328049 B SE328049 B SE 328049B
- Authority
- SE
- Sweden
- Prior art keywords
- spring
- snap
- control lever
- contact
- pressure
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0015—Hanging grinding machines
-
- 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
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/34—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by diaphragm
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
1,175,997. Fluid actuation of switches; snap-action switches. PATINVEST PATENTUND INVESTMENT A.G. 7 July, 1967 [12 July, 1966], No. 31495/67. Heading H1N. An electric pressure-controlled snap switch having at least one contact spring 10 projecting between fixed contacts 13, 14 and the operation of which may be controlled by the movements of an element which is subjected to the pressure of a liquid or gas and then acts on an intermediate control lever 5 which is connected to contact spring 10 by a snap spring 17 and is also acted on by an adjusting spring 6 has the bearing points 18, 19 for snap spring 17 disposed relative to the pivot arms 26 of control lever 5 so that the torque M s exerted by snap spring 17 on the control lever is opposed at least within the area adjacent to the snap-over points to the torque M, exerted by adjusting spring 6 on control lever 5. Torque M s equals the product of snap spring pressure S and distance b. Torque M j equals the product of adjusting spring pressure J and distance a. Pressure from a diaphragm is applied by a tappet at D on control lever 5. The strength of spring 6 may be adjusted by a set-screw. A graph is given (Fig. 6, not shown) for M s , M j, M s + M j for high and low initial tension of spring 6 against distance of travel of control lever 5. The position of fixed contact 13 may be adjusted by a set-screw. Contact spring 10 is highly elastic at least between contact 11 and bearing 18 to assist the snap-action, and to have a cleaning and anti-chattering effect on the contacts. The snap spring may be a coil spring or barrel spring. The switch described is a three-phase switch having one diaphragm actuating three switch systems each comprising a contact spring, a pair of associated fixed contacts and a control lever and adjacent switch systems are disposed in reversed positions to each other.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP0039931 | 1966-07-12 |
Publications (1)
Publication Number | Publication Date |
---|---|
SE328049B true SE328049B (en) | 1970-09-07 |
Family
ID=7376816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE09612/67*A SE328049B (en) | 1966-07-12 | 1967-06-29 |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH457588A (en) |
GB (1) | GB1175997A (en) |
NL (2) | NL6708678A (en) |
SE (1) | SE328049B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1217480A (en) * | 1968-06-18 | 1970-12-31 | Patinvest | Electric pressure-controlled snap switch |
GB2287128A (en) * | 1994-03-03 | 1995-09-06 | M & G Tankers & Trailers Ltd | Fluid operated switch |
US7479609B1 (en) * | 2003-07-03 | 2009-01-20 | Barksdale, Inc. | Adjustable snap action switch |
CN103447269A (en) * | 2013-09-04 | 2013-12-18 | 大连市旅顺钢模板修复机设备厂有限公司 | Wire brush device for surface treatment of workpiece |
-
0
- NL NL60805D patent/NL60805C/xx active
-
1967
- 1967-06-21 NL NL6708678A patent/NL6708678A/xx unknown
- 1967-06-22 CH CH906767A patent/CH457588A/en unknown
- 1967-06-29 SE SE09612/67*A patent/SE328049B/xx unknown
- 1967-07-07 GB GB3149567A patent/GB1175997A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL6708678A (en) | 1968-01-15 |
GB1175997A (en) | 1970-01-01 |
DE1665332A1 (en) | 1970-12-03 |
CH457588A (en) | 1968-06-15 |
DE1665332B2 (en) | 1975-08-21 |
NL60805C (en) |
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