US4515345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid valve
Assignee: Aisin Corp
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Filing: 1983-10-27
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Granted: 1985-05-07
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Expires: 2003-10-27
Abstract
Abstract A solenoid valve used in a positive pressure has a yoke divided into two portions around the housing. A flange surface is formed on one end of the bobbin of the valve and is directly attached to a chassis. The flange surface and the valve seat of the solenoid valve are molded integrally with the bobbin.
Inventors
- 👤 Masahiro Inden
- 👤 Kazutaka Kuwana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:49
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0658
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
131 words
In a solenoid valve comprising: a cup-shaped housing, a bobbin disposed in the housing and having a coil wound thereon, a core firmly fixed in the bobbin, a plunger provided with a valve at one end thereof moveably disposed in said housing, a flange on one end of said bobbin and having a valve seat disposed so as to be opposite to the valve of the plunger, a spring biasing the plunger in such a direction as to abut on the valve seat, and a yoke disposed intermediate said coil and said flange to couple the housing to the plunger magnetically, the improvement wherein said yoke is divided into a plurality of sections substantially surrounding said bobbin, and wherein said valve seat and said flange are molded integrally with said bobbin.
Claim 2
Dependent Claim
131 words
In a solenoid valve comprising: a cup-shaped housing, a bobbin disposed in the housing and having a coil wound thereon, a core firmly fixed in the bobbin, a plunger provided with a valve at one end thereof moveably disposed in said housing, a flange on one end of said bobbin and having a valve seat disposed so as to be opposite to the valve of the plunger, a spring biasing the plunger in such a direction as to abut on the valve seat, and a yoke disposed intermediate said coil and said flange to couple the housing to the plunger magnetically, the improvement wherein said yoke is divided into a plurality of sections substantially surrounding said bobbin, and wherein said valve seat and said flange are molded integrally with said bobbin.
Claim 3
Dependent Claim
47 words
In a solenoid valve as set forth in claim 1, the further improvement wherein one end of said core is provided with a reduced portion fitted in a hole formed in the housing, the other end of the core abutting on a stopper formed on the bobbin.
Claim 4
Dependent Claim
27 words
In a solenoid valve as set forth in claim 1, the further improvement wherein said plunger is provided with a recess in which said spring is received.
References Cited (Backward Citations)
US2449438A
Cited
US3420260A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |