US4561469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic control valve
Assignee: Aisin Corp
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Filing: 1984-01-23
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Granted: 1985-12-31
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Expires: 2004-01-23
Abstract
Abstract An electromagnetic control valve used in an internal combustion engine and which includes a motor having a solenoid coil and a center core, a valve body having an inlet port and outlet ports, a pair of yokes connecting the motor and the valve body, a valve rotor having a shaft, a bushing and a plurality of bores, a rotatable permanent magnet arranged at one end of the valve rotor, a torsion spring arranged at the other end of the valve rotor, and a bearing member for rotatably holding the valve rotor and having openings formed therein.
Inventors
- 👤 Motonobu Akagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
H; H01; H01F; H01F7/00; H01F7/06; H01F7/08; H01F7/14; H01F7/145; F; F02; F02M; F02M69/00; F02M69/08; F02M69/46; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86863; Y10T137/86871
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
An electromagnetic control valve, comprising: a motor having a solenoid coil wound around a bobbin and a center core formed of magnetic substance and inserted into said bobbin; a valve body having an inlet port and an outlet port; a pair of yokes formed of magnetic substance and interconnecting said motor and said valve body; a valve rotor having a shaft which includes a plurality of bores formed therein communicable with said inlet port and said outlet port; a rotatable permanent magnet arranged at one end of said valve rotor and disposed in one of said yokes; a coil spring for biasing said valve rotor in one direction and arranged at an end of said valve rotor opposite said one end of said valve rotor; and a bearing member inserted into said valve body for rotatably holding said valve rotor and having a plurality of openings respectively communicable with said plurality of bores.
Claim 2
Dependent Claim
153 words
An electromagnetic control valve, comprising: a motor having a solenoid coil wound around a bobbin and a center core formed of magnetic substance and inserted into said bobbin; a valve body having an inlet port and an outlet port; a pair of yokes formed of magnetic substance and interconnecting said motor and said valve body; a valve rotor having a shaft which includes a plurality of bores formed therein communicable with said inlet port and said outlet port; a rotatable permanent magnet arranged at one end of said valve rotor and disposed in one of said yokes; a coil spring for biasing said valve rotor in one direction and arranged at an end of said valve rotor opposite said one end of said valve rotor; and a bearing member inserted into said valve body for rotatably holding said valve rotor and having a plurality of openings respectively communicable with said plurality of bores.
Claim 3
Dependent Claim
20 words
An electromagnetic control valve according to claim 1, further comprising means for adjusting a biasing force of said coil spring.
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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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |