GB1177932A - Improvements in or relating to Fluid-Pressure Operated Piston and Cylinder Devices - Google Patents
Improvements in or relating to Fluid-Pressure Operated Piston and Cylinder DevicesInfo
- Publication number
- GB1177932A GB1177932A GB260766A GB260766A GB1177932A GB 1177932 A GB1177932 A GB 1177932A GB 260766 A GB260766 A GB 260766A GB 260766 A GB260766 A GB 260766A GB 1177932 A GB1177932 A GB 1177932A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnetic
- cylinder
- piston
- pressure operated
- magnets
- 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
- H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
- H01H36/0006—Permanent magnet actuating reed switches
- H01H36/0046—Limit switches, also fail-safe operation or anti-tamper considerations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/22—Power arrangements internal to the switch for operating the driving mechanism
- H01H3/24—Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
Landscapes
- Actuator (AREA)
Abstract
1,177,932. Magnetic switches. WADE PNEUMATIC Ltd. 20 Jan., 1967 [20 Jan. 1966] No. 2607/66. Heading H1N. A double-acting fluid pressure operated piston 24 is mounted in a non-magnetic cylinder 10 which supports one or more magnetically operable control means such as sealed magnetic reed contact units 42 and the piston includes a plurality of bar permanent magnets 72 with their magnetic axes parallel to the axis of the piston. The magnets extend between ferromagnetic rings 78 forming polepieces retained by screws 83. The magnets are located in a non-magnetic disc 76. The contact units are mounted in nylon holders 52 which are adjustably held on the cylinder 10 by screws 66. In an alternative arrangement (Fig. 4, not shown) the control means may be mounted by U-shaped supports adjustably mounted on guide rods along the outside of the cylinder. Reference has been directed by the Comptroller to Specification 1.103,118.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB260766A GB1177932A (en) | 1966-01-20 | 1966-01-20 | Improvements in or relating to Fluid-Pressure Operated Piston and Cylinder Devices |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB260766A GB1177932A (en) | 1966-01-20 | 1966-01-20 | Improvements in or relating to Fluid-Pressure Operated Piston and Cylinder Devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1177932A true GB1177932A (en) | 1970-01-14 |
Family
ID=9742552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB260766A Expired GB1177932A (en) | 1966-01-20 | 1966-01-20 | Improvements in or relating to Fluid-Pressure Operated Piston and Cylinder Devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1177932A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3738116A (en) * | 1971-10-01 | 1973-06-12 | Dunham Bush Inc | Compressor unloader indicator and refrigeration system controlled thereby |
WO1980001341A1 (en) * | 1978-12-19 | 1980-06-26 | A Wache | Tight jack for automatic steering of a boat |
EP0051961A1 (en) * | 1980-11-10 | 1982-05-19 | CROSBY VALVE & GAGE COMPANY | Apparatus for monitoring a valve |
GB2120813A (en) * | 1982-05-21 | 1983-12-07 | Burn Bindings Ltd James | Linear control device |
US4617011A (en) * | 1983-11-29 | 1986-10-14 | Bloxom Jr Ingrid B | Intestinal irrigation system with flow indicator |
EP0233161A1 (en) * | 1986-02-14 | 1987-08-19 | G.N.G. di GISONNO N. & GRAZIANO A. S.n.c. | Differential clogging director for a filter for hydraulic fluids |
GB2171847B (en) * | 1985-03-01 | 1989-06-14 | Festo Kg | A piston and cylinder transducer |
FR2625027A1 (en) * | 1987-10-13 | 1989-06-23 | Festo Kg | ACTUATABLE SWITCHING DEVICE IN PARTICULAR AS A FUNCTION OF GIVEN PISTON POSITIONS OF A CYLINDER-PISTON ASSEMBLY |
-
1966
- 1966-01-20 GB GB260766A patent/GB1177932A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3738116A (en) * | 1971-10-01 | 1973-06-12 | Dunham Bush Inc | Compressor unloader indicator and refrigeration system controlled thereby |
WO1980001341A1 (en) * | 1978-12-19 | 1980-06-26 | A Wache | Tight jack for automatic steering of a boat |
EP0051961A1 (en) * | 1980-11-10 | 1982-05-19 | CROSBY VALVE & GAGE COMPANY | Apparatus for monitoring a valve |
GB2120813A (en) * | 1982-05-21 | 1983-12-07 | Burn Bindings Ltd James | Linear control device |
US4617011A (en) * | 1983-11-29 | 1986-10-14 | Bloxom Jr Ingrid B | Intestinal irrigation system with flow indicator |
GB2171847B (en) * | 1985-03-01 | 1989-06-14 | Festo Kg | A piston and cylinder transducer |
EP0233161A1 (en) * | 1986-02-14 | 1987-08-19 | G.N.G. di GISONNO N. & GRAZIANO A. S.n.c. | Differential clogging director for a filter for hydraulic fluids |
FR2625027A1 (en) * | 1987-10-13 | 1989-06-23 | Festo Kg | ACTUATABLE SWITCHING DEVICE IN PARTICULAR AS A FUNCTION OF GIVEN PISTON POSITIONS OF A CYLINDER-PISTON ASSEMBLY |
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