US4286626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic valve
Assignee: Robert Bosch GmbH
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Filing: 1979-05-14
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Granted: 1981-09-01
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Expires: 1999-05-14
Abstract
Abstract The invention relates to a magnetic valve in which the electromagnet is housed in a chamber which is not infiltrated by the pressure medium to be controlled, and in which a rod coupling is effective between the armature of the electromagnet and the closure body of the valve inserted between a pressure source and a pressure consumer, and in which a sealing apparatus is provided which seals the entryway of the rod coupling into the region infiltrated by pressure medium.
Inventors
- 👤 Heinz Leiber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:59
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0665; B; B60; B60T; B60T8/00; B60T8/32; B60T8/34; B60T8/36; B60T8/3615; B60T8/363; B60T8/3635; B60T8/364; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
278 words
A magnetic valve including a housing and an electromagnet having an armature housed in a chamber in said housing which is not infiltrated by a pressure medium to be controlled, a high-pressure chamber arranged to be connected with a source of relatively high pressure and an intermediate-pressure chamber located between said high-pressure chamber and said electromagnet, a wall having a passageway opening between said high-pressure chamber and said intermediate-pressure chamber, a low-pressure chamber subjected to relatively low pressure, said intermediate-pressure chamber communicating with said low-pressure chamber, a rod coupling connected to said armature of the electromagnet, a separate auxiliary rod positioned in said passageway opening in said wall between said rod coupling and said high-pressure chamber, a sealing apparatus for sealing the passageway opening in said wall containing said auxiliary rod from said high-pressure chamber, said passageway opening and said auxiliary rod being so dimensioned that only a small flow of pressure medium flows from said high-pressure chamber to said intermediate pressure chamber along the auxiliary rod whereby the pressure drop at said passageway opening between said high-pressure chamber and said intermediate-pressure chamber constitutes the greatest share of the pressure difference between high-pressure chamber and said low-pressure chamber, a membrane secured to said rod coupling and to said valve housing for sealing off the entry of said rod coupling from the electromagnet side into said intermediate-pressure chamber, said sealing apparatus including a closure part arranged to be actuated by said auxiliary rod whereby, in one position of said magnetic valve, said closure part is actuated by said auxiliary rod and permits a flow of pressure medium from the source of relatively high pressure to said intermediate pressure chamber.
Claim 2
Dependent Claim
278 words
A magnetic valve including a housing and an electromagnet having an armature housed in a chamber in said housing which is not infiltrated by a pressure medium to be controlled, a high-pressure chamber arranged to be connected with a source of relatively high pressure and an intermediate-pressure chamber located between said high-pressure chamber and said electromagnet, a wall having a passageway opening between said high-pressure chamber and said intermediate-pressure chamber, a low-pressure chamber subjected to relatively low pressure, said intermediate-pressure chamber communicating with said low-pressure chamber, a rod coupling connected to said armature of the electromagnet, a separate auxiliary rod positioned in said passageway opening in said wall between said rod coupling and said high-pressure chamber, a sealing apparatus for sealing the passageway opening in said wall containing said auxiliary rod from said high-pressure chamber, said passageway opening and said auxiliary rod being so dimensioned that only a small flow of pressure medium flows from said high-pressure chamber to said intermediate pressure chamber along the auxiliary rod whereby the pressure drop at said passageway opening between said high-pressure chamber and said intermediate-pressure chamber constitutes the greatest share of the pressure difference between high-pressure chamber and said low-pressure chamber, a membrane secured to said rod coupling and to said valve housing for sealing off the entry of said rod coupling from the electromagnet side into said intermediate-pressure chamber, said sealing apparatus including a closure part arranged to be actuated by said auxiliary rod whereby, in one position of said magnetic valve, said closure part is actuated by said auxiliary rod and permits a flow of pressure medium from the source of relatively high pressure to said intermediate pressure chamber.
Claim 3
Dependent Claim
52 words
A magnetic valve in accordance with claim 1, characterized in that said closure part which interrupts the flow of pressure medium from the source of relatively high pressure to said intermediate-pressure chamber in one valve position simultaneously serves as a closure body of the valve located between the source and a consumer.
Claim 4
Dependent Claim
50 words
A magnetic valve in accordance with claim 2, characterized in that said closure body, in the normal position of the valve, closes said passageway opening between said high-pressure chamber and said intermediate-pressure chamber and, in the other position of the valve, closes the connection between the source and the consumer.
Claim 5
Dependent Claim
78 words
A magnetic valve in accordance with claim 2, characterized in that the valve is provided with a further connection point communicating with said low-pressure chamber, whereby said closure body alternatively opens the connection between the pressure source and the consumer or the connection between the consumer and said low-pressure chamber and that said passageway opening from said intermediate-pressure chamber to said high-pressure chamber discharges in the region of said further connection point downstream of the associated valve seat.
Claim 6
Dependent Claim
62 words
A magnetic valve in accordance with claim 2, characterized in that said appropriately dimensioned passageway opening between said high-pressure chamber and said intermediate-pressure chamber serves as a further connection point for a connection between the consumer and said low-pressure chamber, whereby said closure body alternatively opens the connections between the pressure source and consumer or between the consumer and said low-pressure chamber.
Claim 7
Dependent Claim
35 words
A magnetic valve in accordance with claim 1, characterized in that said valve comprises a spool valve moved by said rod, which spool valve is actuated together with said closure part for said passageway opening.
Claim 8
Dependent Claim
50 words
A magnetic valve in accordance with claim 1, including a closure part holder associated with said closure part, a spring for pressing against said closure part holder thereby pressing said closure part onto a valve seat associated with said passageway opening for said auxillary rod when said electromagnet is deactivated.
Claim 9
Dependent Claim
31 words
A magnetic valve in accordance with claim 1, characterized in that said membrane comprises a metallic membrane, said membrane being connected in the conventional manner with said rod and said housing.
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) | 1984-08-31 | 1985-03-02 | 1985-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-08-31 | 1989-03-02 | 1989-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-08-31 | 1993-03-02 | 1993-09-01 | $7700.00 | Window Closed / Lapsed |