US3633869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid valve with adjustable stroke
Assignee: Danfoss AS
•
Filing: 1970-07-31
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Granted: 1972-01-11
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Expires: 1990-07-31
Abstract
Abstract A solenoid valve in which the solenoid having the valve element connected to the armature can be moved as a unit relative to the seat of the valve so that the stroke of the solenoid is varied without making any adjustment in the electrical characteristics of the solenoid. The valve element is connected to the armature by a bellows and the solenoid unit is mounted on the valve bonnet on a threaded portion so that it can be rotated on the thread so the unit as a whole is moved relative to the valve seat to vary the stroke of the solenoid armature without any other adjustment.
Inventors
- 👤 Rolf-Konrad Lehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:43
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0686; F16K31/0689
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
An adjustable stroke solenoid valve assembly comprising first and second units, said first unit having a valve seat with fluid inlet and outlet ports on opposite sides of said valve seat, said inlet and outlet ports being in fixed relation to each other, said first unit defining a valve housing adjacent said valve seat, said second unit having a cylindrical surface forming a bore and a solenoid assembly which includes an armature, said armature being disposed in said bore, said second unit having a valve element connected to said armature, a bellows surrounding said valve element having one end fastened in sealing engagement to said valve element and the other end fastened in sealing engagement to said bore surface, thread means on said first and second units, said thread means being engageable to allow the attachment of said second unit to said first unit and to provide for the adjustable spacing of said second unit from said valve seat whereby the stroke of said valve element is also made adjustable.
Claim 2
Dependent Claim
170 words
An adjustable stroke solenoid valve assembly comprising first and second units, said first unit having a valve seat with fluid inlet and outlet ports on opposite sides of said valve seat, said inlet and outlet ports being in fixed relation to each other, said first unit defining a valve housing adjacent said valve seat, said second unit having a cylindrical surface forming a bore and a solenoid assembly which includes an armature, said armature being disposed in said bore, said second unit having a valve element connected to said armature, a bellows surrounding said valve element having one end fastened in sealing engagement to said valve element and the other end fastened in sealing engagement to said bore surface, thread means on said first and second units, said thread means being engageable to allow the attachment of said second unit to said first unit and to provide for the adjustable spacing of said second unit from said valve seat whereby the stroke of said valve element is also made adjustable.
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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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |