US3632081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solenoid valve including guide for armature and valve member
Assignee: National Aeronautics and Space Administration
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Filing: 1970-04-10
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Granted: 1972-01-04
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Expires: 1990-04-10
Abstract
Abstract The poppet of a valve is guided independently of an activating armature. The poppet is linked to the armature through a nonmagnetic spring biasing mechanism. The spring biasing mechanism has a plunger which is inserted into a cone-shaped cavity in the poppet. A guiding member guides both the armature and the poppet independently of one another. The spring biasing mechanism causes the poppet to make contact with a valve seat before the armature completes its stroke to reduce the impact force. In addition, the valve seat and the poppet have unique contour shapes which are designed to reduce stresses.
Inventors
- 👤 Jack Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:54
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0665; F16K31/0658
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A solenoid valve comprising: a valve seat; a valve closure member; actuating means for pressing said valve closure member against said valve seat and pulling said valve closure member away from said valve seat, said actuating means including: a solenoid, an armature, and a nonmagnetic spring bias means which cooperates with said armature and said valve closure member to cause said valve closure member to make contact with said valve seat before said armature completes its movement toward said valve seat upon closing said valve, to bias said valve closure member against said seat when said valve is closed, and to decelerate the movement of said armature after said valve is closed; and hollow guiding means having an outside guidance track and inside guidance track for guiding, respectively, said armature and said valve closure member, the latter into registration with said valve seat.
Claim 2
Dependent Claim
143 words
A solenoid valve comprising: a valve seat; a valve closure member; actuating means for pressing said valve closure member against said valve seat and pulling said valve closure member away from said valve seat, said actuating means including: a solenoid, an armature, and a nonmagnetic spring bias means which cooperates with said armature and said valve closure member to cause said valve closure member to make contact with said valve seat before said armature completes its movement toward said valve seat upon closing said valve, to bias said valve closure member against said seat when said valve is closed, and to decelerate the movement of said armature after said valve is closed; and hollow guiding means having an outside guidance track and inside guidance track for guiding, respectively, said armature and said valve closure member, the latter into registration with said valve seat.
Claim 3
Dependent Claim
48 words
A valve as In claim 1 wherein: said nonmagnetic spring bias means includes a plunger which pushes against said closure means when said valve is closed; and, said valve closure member has a cone shaped cavity into which said plunger is inserted when pushing against said closure means.
Claim 4
Dependent Claim
59 words
A valve as in claim 2 wherein: said valve seat has a face at one end, said face having a semitoroidally shaped portion; and, said closure member has a face which has a semispherically shaped portion which protrudes into said semitoroidally shaped portion and has a common tangent surface with said semitoroidally shaped portion when said valve is closed.
Claim 5
Dependent Claim
46 words
A valve as in claim 1 wherein said hollow guiding means is tubular in shape and wherein said outside tract and said inside track of said guiding means, the inner surface of said armature, and the outer surface of said valve closure member are all coaxial.
Claim 6
Dependent Claim
99 words
A valve as in claim 2 wherein said valve closure member and said armature are both tubular in shape, and said armature has an inner member perpendicular to the longitudual axis of said armature, with said inner member having a central aperture therein; and wherein said nonmagnetic spring bias means further includes a shaft portion extending through said aperture, a collar member attached to and between said shaft and said plunger, a spring member coiled about said shaft portion having one end resting against said inner member of said armature and the other end resting against said collar member.
Claim 7
Dependent Claim
36 words
A valve as in claim 5 wherein said armature has a pair of pins extending inwardly thereof and said guiding means and valve closure member both have slots therein for cooperating with said pair of pins.
Claim 8
Dependent Claim
29 words
A valve as in claim 4 wherein said hollow guide means also includes a central track for retaining and positioning said valve seat in alignment with said closure member.
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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |