WO1996012287B1 - Solenoid with magnetic control of armature velocity - Google Patents
Solenoid with magnetic control of armature velocityInfo
- Publication number
- WO1996012287B1 WO1996012287B1 PCT/US1995/012890 US9512890W WO9612287B1 WO 1996012287 B1 WO1996012287 B1 WO 1996012287B1 US 9512890 W US9512890 W US 9512890W WO 9612287 B1 WO9612287 B1 WO 9612287B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- armature
- pole piece
- groove
- solenoid
- projection means
- Prior art date
Links
- 238000004804 winding Methods 0.000 claims 3
- 230000000295 complement Effects 0.000 claims 1
- 230000003116 impacting Effects 0.000 abstract 1
Abstract
A low-noise solenoid has an armature (15) with a projecting ridge (23) receivable within a groove (25) in a pole piece (17). As the ridge (23) enters the groove (25), the magnetic force which opposes a return spring (21) decreases until there is equilibrium whereat the armature (15) remains suspended without impacting upon the pole piece (17).
Claims
1. In a solenoid actuator selectively energizeable by a source of electric current, and having a core tube with two opposite ends and a winding circumscribing said core tube, a stationary pole piece mounted at one end of said core tube, and an axially reciprocable armature slidably mounted in said core tube for movement between an energized position adjacent said pole piece when said winding is energized and a deenergized position distal from said pole piece, the improvement wherein one of said movable armature and said stationary pole piece has axially extending projection means comprising a circular ridge having a rectangular cross section, and the other of said movable armature and said stationary pole piece has a complementary groove in the form of a circular channel with a rectangular cross section having a width slightly than the width of said ridge for receiving said projections means when said armature is in said energized position at an equilibrium position whereat said armature floats with no mechanical connection between said armature and stationary pole piece.
2. A solenoid in accordance with claim 1 wherein said armature comprises said projection means and said groove is in said pole piece.
3. A solenoid in accordance with claim 1 wherein said other of said movable armature and said stationary pole piece comprises an elastomeric member seated within said groove, said groove being wider than the width of said member for leaving a recess into which said projection means can be received.
4. A solenoid in accordance with claim 1 further comprising bias means mounted within said core tube for applying a return force to said armature for urging said armature toward said deenergized position, said winding having an operating current range in which said pole piece exerts a magnetic force on said armature greater than said return force when said projection means is out of said groove and said pole 1 3
piece exerts a magnetic force on said armature equal to the return force at an equilibrium position of said armature at which said projection means is received in said groove.
5. A solenoid in accordance with claim 4 wherein said projection means is spaced from the floor of said groove at said equilibrium position.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8513330A JPH09507002A (en) | 1994-10-17 | 1995-10-16 | Armature speed magnetic control solenoid |
AU39993/95A AU692955B2 (en) | 1994-10-17 | 1995-10-16 | Solenoid with magnetic control of armature velocity |
BR9506415A BR9506415A (en) | 1994-10-17 | 1995-10-16 | Solenoid and solenoid actuator |
MX9602343A MX9602343A (en) | 1994-10-17 | 1995-10-16 | Solenoid with magnetic control of armature velocity. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/331,023 US5565832A (en) | 1994-10-17 | 1994-10-17 | Solenoid with magnetic control of armature velocity |
US08/331,023 | 1994-10-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1996012287A1 WO1996012287A1 (en) | 1996-04-25 |
WO1996012287B1 true WO1996012287B1 (en) | 1996-06-20 |
Family
ID=23292297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1995/012890 WO1996012287A1 (en) | 1994-10-17 | 1995-10-16 | Solenoid with magnetic control of armature velocity |
Country Status (7)
Country | Link |
---|---|
US (1) | US5565832A (en) |
JP (1) | JPH09507002A (en) |
AU (1) | AU692955B2 (en) |
BR (1) | BR9506415A (en) |
CA (1) | CA2178828A1 (en) |
MX (1) | MX9602343A (en) |
WO (1) | WO1996012287A1 (en) |
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US7246787B2 (en) * | 2003-12-19 | 2007-07-24 | Kumar Viraraghavan S | Solenoid valve assembly |
US7325564B2 (en) * | 2004-03-24 | 2008-02-05 | Keihin Corporation | Linear solenoid valve |
US7487798B2 (en) * | 2004-03-31 | 2009-02-10 | Keihin Corporation | Linear solenoid valve |
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US7828265B2 (en) | 2004-07-30 | 2010-11-09 | Emerson Electric Co. | Solenoid valve |
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US20100252757A1 (en) * | 2007-06-27 | 2010-10-07 | Michael Birkelund | Magnetic actuator and a valve comprising such an actuator |
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US20120268225A1 (en) * | 2011-04-19 | 2012-10-25 | Honeywell International Inc. | Solenoid actuator with surface features on the poles |
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Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2407963A (en) * | 1943-01-11 | 1946-09-17 | Mcquay Norris Mfg Co | Solenoid |
US2888233A (en) * | 1956-08-06 | 1959-05-26 | Hays Mfg Co | Pilot operated valve |
US3168242A (en) * | 1962-11-05 | 1965-02-02 | Eldima A G | Electromagnetically operated temperature regulating system |
US3805204A (en) * | 1972-04-21 | 1974-04-16 | Polaroid Corp | Tractive electromagnetic device |
US4008448A (en) * | 1975-10-03 | 1977-02-15 | Polaroid Corporation | Solenoid with selectively arrestible plunger movement |
JPS59133883A (en) * | 1983-01-18 | 1984-08-01 | Nippon Denso Co Ltd | Solenoid valve |
JPS6091854A (en) * | 1983-10-20 | 1985-05-23 | Mitsubishi Electric Corp | Electromagnetic solenoid unit |
-
1994
- 1994-10-17 US US08/331,023 patent/US5565832A/en not_active Expired - Lifetime
-
1995
- 1995-10-16 BR BR9506415A patent/BR9506415A/en not_active Application Discontinuation
- 1995-10-16 AU AU39993/95A patent/AU692955B2/en not_active Ceased
- 1995-10-16 MX MX9602343A patent/MX9602343A/en unknown
- 1995-10-16 WO PCT/US1995/012890 patent/WO1996012287A1/en active Application Filing
- 1995-10-16 CA CA002178828A patent/CA2178828A1/en not_active Abandoned
- 1995-10-16 JP JP8513330A patent/JPH09507002A/en active Pending
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