US5188336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet system for a valve
Assignee: Robert Bosch GmbH
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Filing: 1990-03-02
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Granted: 1993-02-23
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Expires: 2010-03-02
Abstract
Abstract A magnet system for an outwardly opening magnet valve having a core winding, an armature carrying the valve body, and a permanent magnet disposed symmetrically to the winding. The closed magnet circuits of the electromagnet and permanent magnet partly overlap, and a ring of ferromagnetic material is associated with the permanent magnet 1 in the magnet circuit of the electromagnet, this ring absorbs half the flux I of the permanent magnet, and the magnet circuit for the electromagnet is dimensioned to one-half the permanent flux.
Inventors
- 👤 Juergen Graner
- 👤 Hans Kubach
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:42
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/16; H01F7/1638; H01F7/1646; F; F02; F02M; F02M51/00; F02M51/06; F02M51/061; F02M51/0614; F02M51/0625; F02M51/0632; F02M51/0635; F02M51/0642; F02M51/0646; F02M51/065; F02M51/0689; F02M51/0692; H01F7/121; H01F7/122
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
157 words
A magnet system for an outwardly opening magnet valve having an outward axially extending jacket (5) connected with an outer pole (3') and surrounding a core winding (17), an inner axially extending pole (3) arranged inwardly in said core winding (17) and formed by a central tube, an armature (2), a valve body carried by said armature, a permanent magnet (1) disposed symmetrically with respect to the winding (17), wherein the closed magnet circuit of the electromagnet and the permanent magnet (1) partly overlap, a ring (21) of ferromagnetic material in the magnet circuit of the electromagnet, said ring (21) is associated with the permanent magnet (1) and magnetically connects said jacket (5) with said inner and outer poles, said ring (21) reduces a flux (I) of the permanent magnet (1) to one-half of its total flux output, and the magnet circuit for the electromagnet is reduced to one-half of the permanent flux of sad permanent magnet.
Claim 2
Dependent Claim
157 words
A magnet system for an outwardly opening magnet valve having an outward axially extending jacket (5) connected with an outer pole (3') and surrounding a core winding (17), an inner axially extending pole (3) arranged inwardly in said core winding (17) and formed by a central tube, an armature (2), a valve body carried by said armature, a permanent magnet (1) disposed symmetrically with respect to the winding (17), wherein the closed magnet circuit of the electromagnet and the permanent magnet (1) partly overlap, a ring (21) of ferromagnetic material in the magnet circuit of the electromagnet, said ring (21) is associated with the permanent magnet (1) and magnetically connects said jacket (5) with said inner and outer poles, said ring (21) reduces a flux (I) of the permanent magnet (1) to one-half of its total flux output, and the magnet circuit for the electromagnet is reduced to one-half of the permanent flux of sad permanent magnet.
Claim 3
Dependent Claim
15 words
A magnet system as defined by claim 1, in which said armature (2) is circular-symmetrical.
Claim 4
Dependent Claim
20 words
A magnet system as defined by claim 1, in which said permanent magnet (1) is carried by said armature (2).
Claim 5
Dependent Claim
20 words
A magnet system as defined by claim 2, in which said permanent magnet (1) is carried by said armature (2).
Claim 6
Dependent Claim
35 words
A magnet system as defined by claim 1, in which an attraction time of the magnet is lengthened and the decay time of the magnet flux is shortened by attenuation of the permanent magnet (1).
Claim 7
Dependent Claim
35 words
A magnet system as defined by claim 2, in which an attraction time of the magnet is lengthened and the decay time of the magnet flux is shortened by attenuation of the permanent magnet (1).
Claim 8
Dependent Claim
35 words
A magnet system as defined by claim 3, in which an attraction time of the magnet is lengthened and the decay time of the magnet flux is shortened by attenuation of the permanent magnet (1).
Claim 9
Dependent Claim
35 words
A magnet system as defined by claim 4, in which an attraction time of the magnet is lengthened and the decay time of the magnet flux is shortened by attenuation of the permanent magnet (1).
Claim 10
Dependent Claim
30 words
The magnet system as defined by claim 1, which includes a radially extending cover plate (4), and the magnet circuit is closed from the jacket (5) to the armature (2).
Claim 11
Dependent Claim
30 words
The magnet system as defined by claim 2, which includes a radially extending cover plate (4), and the magnet circuit is closed from the jacket (5) to the armature (2).
Claim 12
Dependent Claim
30 words
The magnet system as defined by claim 3, which includes a radially extending cover plate (4), and the magnet circuit is closed from the jacket (5) to the armature (2).
Claim 13
Dependent Claim
30 words
The magnet system as defined by claim 5, which includes a radially extending cover plate (4), and the magnet circuit is closed from the jacket (5) to the armature (2).
Claim 14
Dependent Claim
30 words
A magnet system as defined by claim 9, in which a bore (6) in the central tube (3) continues in the permanent magnet (1) and extends into the premature (2).
Claim 15
Dependent Claim
21 words
A magnet system as defined claim 1, in that the armature (2) extends into the interior of the permanent magnet (1).
Claim 16
Dependent Claim
26 words
A magnet system as defined by claim 9, in which said permanent magnet (1) is firmly joined to the tube (3) and faces the armature (2).
Claim 17
Dependent Claim
26 words
A magnet system as defined by claim 13, in which said permanent magnet (1) is firmly joined to the tube (3) and faces the armature (2).
Claim 18
Dependent Claim
28 words
A magnet system as defined by claim 9, in which said permanent magnet (1) is disposed in axial alignment with the winding (17) and facing the outer pole.
Claim 19
Dependent Claim
22 words
A magnet system as defined by claim 1, in which said ring (21) defines an outer limit of the permanent magnet (1).
Claim 20
Dependent Claim
22 words
A magnet system as defined by claim 9, in which said ring (21) defines an outer limit of the permanent magnet (1).
Claim 21
Dependent Claim
22 words
A magnet system as defined by claim 17, in which said ring (21) defines an outer limit of the permanent magnet (1).
Claim 22
Dependent Claim
24 words
A magnet system as defined by claim 9, which includes a further ring (22) of ferromagnetic material in contact with the permanent magnet (1).
Claim 23
Dependent Claim
24 words
A magnet system as defined by claim 17, which includes a further ring (22) of ferromagnetic material in contact with the permanent magnet (1).
Claim 24
Dependent Claim
24 words
A magnet system as defined by claim 18, which includes a further ring (22) of ferromagnetic material in contact with the permanent magnet (1).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-02-23 | 1996-08-24 | 1997-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-02-23 | 2000-08-24 | 2001-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-02-23 | 2004-08-24 | 2005-02-23 | $7700.00 | Window Closed / Lapsed |