US3625477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic valve with grooved armature surrounded by discrete disc-shaped annular windings
Assignee: Robert Bosch GmbH
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Filing: 1970-04-07
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Granted: 1971-12-07
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Expires: 1990-04-07
Abstract
Abstract A magnetic valve has a housing provided with an aperture and a valve member movable in the housing between two positions in which it respectively opens and blocks the aperture. An armature of ferromagnetic material is connected to the valve member for movement with the same and provided with a predetermined number of axially successive outer circumferential grooves. Winding means cooperates with the armature for moving the same when energized and has a number of discrete disc-shaped annular windings surrounding the armature, this number corresponding to the predetermined number of grooves in the armature. Each of these windings constitutes a discrete electromagnet whose magnetic field acts upon the armature.
Inventors
- 👤 Wilhelm Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:44
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F02; F02M; F02M51/00; F02M51/06; F02M51/061; F02M51/0625; F02M51/0628; F16K31/0651; F16K31/0675; H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1653
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
175 words
A magnetic valve, comprising a valve housing having an aperture; a valve member movable between two positions in which it respectively opens and blocks said aperture; winding means accommodated in said valve housing and composed of a plurality of coaxial ferromagnetic disk-shaped annuli each having an inner marginal portion and arranged in alternating sequence with a plurality of disk-shaped annular windings coaxial with one another and with said annuli; each of said windings constituting a discrete electromagnet a hollow cylindrical armature of ferromagnetic material connected to said valve member for movement therewith and located within the confines of said annuli and windings, said armature having an outer circumferential surface provided with a plurality of axially successive circumferential grooves corresponding in number to said windings and each of which is in only partial registry with the inner marginal portion of one of said annuli in the unenergized condition of said winding means; and a hollow guide sleeve for said armature accommodated in said valve housing and extending at least in part into said armature coaxially therewith.
Claim 2
Dependent Claim
175 words
A magnetic valve, comprising a valve housing having an aperture; a valve member movable between two positions in which it respectively opens and blocks said aperture; winding means accommodated in said valve housing and composed of a plurality of coaxial ferromagnetic disk-shaped annuli each having an inner marginal portion and arranged in alternating sequence with a plurality of disk-shaped annular windings coaxial with one another and with said annuli; each of said windings constituting a discrete electromagnet a hollow cylindrical armature of ferromagnetic material connected to said valve member for movement therewith and located within the confines of said annuli and windings, said armature having an outer circumferential surface provided with a plurality of axially successive circumferential grooves corresponding in number to said windings and each of which is in only partial registry with the inner marginal portion of one of said annuli in the unenergized condition of said winding means; and a hollow guide sleeve for said armature accommodated in said valve housing and extending at least in part into said armature coaxially therewith.
Claim 3
Dependent Claim
48 words
A magnetic valve as defined in claim 1; further comprising a helical biasing spring at least substantially accommodated in said guide sleeve coaxial with the same and with said armature and permanently tending to bias the latter to a position in which said valve member blocks said aperture.
Claim 4
Dependent Claim
36 words
A magnetic valve as defined in claim 1, wherein said annuli each have an outer marginal portion provided With an axially projecting distancing bead which is in abutment with an axially adjacent one of said annuli.
Claim 5
Dependent Claim
30 words
A magnetic valve as defined in claim 3, wherein said windings are of predetermined axial thickness, and said distancing beads have an axial length at least substantially equalling said thickness.
Claim 6
Dependent Claim
18 words
A magnetic valve as defined in claim 1, wherein successive ones of said electromagnets are of alternate polarity.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |