US4582085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically actuatable valve
Assignee: Robert Bosch GmbH
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Filing: 1983-12-23
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Granted: 1986-04-15
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Expires: 2003-12-23
Abstract
Abstract An electromagnetically actuatable valve which serves to control a flow of fluid. The valve includes a valve housing and a core of ferromagnetic material as well as an armature, which actuates a valve element cooperating with a fixed valve seat. When a magnetic coil is excited, the armature is attracted toward a stop face on the end face of the valve housing. The stop face is defined on one side by an inner bore of the valve housing and on the other by the rim of a groove which is embodied in the end face. The circumference of the armature partially overlaps the groove.
Inventors
- 👤 Udo Hafner
- 👤 Rudolf Krauss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:12
CPC Classifications
F; F02; F02M; F02M51/00; F02M51/06; F02M51/061; F02M51/0614; F02M51/0625; F02M51/0635; F02M51/0642; F02M51/0646; F02M51/065; F02M51/08; Y; Y10; Y10S; Y10S239/00; Y10S239/90; Y10T; Y10T137/00; Y10T137/794; Y10T137/8013
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
133 words
An electromagnetically actuatable fuel injection valve for fuel injection systems of internal combustion engines, comprising a valve housing, an electromagnet, a core of ferromagnetic material extending into an interior bore of said housing and an armature actuating a valve element cooperating with a fixed valve seat, said armature being attracted toward a stop face when a magnetic coil of said electromagnet is excited, said stop face being part of an end face of said valve housing and on the same plane, said end face having at least a first groove positioned relative to said armature such that the circumference of said armature partially overlaps said at least first groove, said stop face being defined by a rim of the overlapped groove juxtaposed a portion of said armature facing said at least first groove.
Claim 2
Dependent Claim
133 words
An electromagnetically actuatable fuel injection valve for fuel injection systems of internal combustion engines, comprising a valve housing, an electromagnet, a core of ferromagnetic material extending into an interior bore of said housing and an armature actuating a valve element cooperating with a fixed valve seat, said armature being attracted toward a stop face when a magnetic coil of said electromagnet is excited, said stop face being part of an end face of said valve housing and on the same plane, said end face having at least a first groove positioned relative to said armature such that the circumference of said armature partially overlaps said at least first groove, said stop face being defined by a rim of the overlapped groove juxtaposed a portion of said armature facing said at least first groove.
Claim 3
Dependent Claim
26 words
A valve as defined by claim 1, wherein the stop face is provided with a second groove externally of said first groove in said end face.
Claim 4
Dependent Claim
29 words
A valve as defined by claim 1 wherein a plurality of grooves are provided in said stop face, said grooves being concentric about the axis of said interior bore.
References Cited (Backward Citations)
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Cited
US3960361A
Cited
US4365747A
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US4390130A
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US4474332A
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US4471914A
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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) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |