US3661183A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically operated valve with two seats
Assignee: Robert Bosch GmbH
•
Filing: 1970-06-12
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Granted: 1972-05-09
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Expires: 1990-06-12
Abstract
Abstract An electromagnetically operated valve wherein a spherical valve member normally engages one of two seats to thereby connect a port for spent fluid with a port which is connected with a consumer of pressurized fluid. The valve member is held in such position by the plunger of an armature which is accommodated in a fluid-filled chamber provided in the valve housing and communicating with a fluid-admitting port. When the winding of the electromagnet is energized, the plunger is retracted to permit movement of the valve member into engagement with the other seat whereby the port which is connected to the consumer communicates with the fluid-admitting port. The plunger can be held in a position in which the valve member engages the one seat by fluid pressure in the chamber and/or by a spring.
Inventors
- 👤 Iwan Komaroff
- 👤 Ewald Ziegler
- 👤 Waldemar Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:55
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0686; F16K31/0693; F16K31/0603; F16K31/0624; F16K31/0627; F16K31/0631; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
An electromagnetically operated valve, comprising a housing including two seats and having first, second and third ports, one of said ports being connected with a source of pressurized fluid and said housing further having a fluid-filled chamber communicating with said one port; a valve-member disposed intermediate said seats and movable between a first position in which it engages one of said seats to thereby connect said first and second ports and a second position in which it engages the other seat to thereby connect one of said first and second ports with said third port; and an electromagnet including an armature reciprocable with clearance in said fluid-filled chamber and normally holding said valve member in engagement with said one seat, and winding means energizable to effect movement of said armature so that said valve member can move into engagement with said other seat.
Claim 2
Dependent Claim
143 words
An electromagnetically operated valve, comprising a housing including two seats and having first, second and third ports, one of said ports being connected with a source of pressurized fluid and said housing further having a fluid-filled chamber communicating with said one port; a valve-member disposed intermediate said seats and movable between a first position in which it engages one of said seats to thereby connect said first and second ports and a second position in which it engages the other seat to thereby connect one of said first and second ports with said third port; and an electromagnet including an armature reciprocable with clearance in said fluid-filled chamber and normally holding said valve member in engagement with said one seat, and winding means energizable to effect movement of said armature so that said valve member can move into engagement with said other seat.
Claim 3
Dependent Claim
40 words
A valve as defined in claim 1, wherein said one port is said third port, wherein said first port is connected with a consumer of pressurized fluid and said second port is connected with a return line for spent fluid.
Claim 4
Dependent Claim
47 words
A valve as defined in claim 1, wherein said armature comprises a plunger which normally holds said valve member in said first position and further comprising annular guide means provided in said housing for said plunger and spring means for biasing said plunger against said valve member.
Claim 5
Dependent Claim
34 words
A valve as defined in claim 1, wherein said armature comprises a differential piston arranged to normally maintain said valve member in said first position under the action of fluid pressure in said chamber.
Claim 6
Dependent Claim
57 words
A valve as defined in claim 1, wherein said armatuRe is movable axially in response to energization of said winding means from an extended position in which it holds said valve member in said first position to a retracted position in which said armature is out of contact with said valve member in the latter''s second position.
Claim 7
Dependent Claim
38 words
A valve as defined in claim 5, wherein said electromagnet further includes a core fixedly mounted in said housing and said armature comprises a plunger having an end face which abuts against the core in said retracted position.
Claim 8
Dependent Claim
46 words
A valve as defined in claim 1, wherein said valve member is a sphere and said seats have coaxial bores one of which connects said first and second ports and the other of which connects said third port with one of said first and second ports.
References Cited (Backward Citations)
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |