Patent US3905575A successfully refreshed from Google Patents.
US3905575A
Expired / Lapsed
US
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Three stage solenoid operated valve assembly
Assignee: Control Concepts Inc
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Filing: 1974-03-20
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Granted: 1975-09-16
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Expires: 1994-03-20
Abstract
Abstract A three stage solenoid operated poppet valve assembly for providing a substantially high speed opening for a high volume flow. The first of the three stages is a normally closed solenoid operated poppet valve which controls fluid flow through a second stage. A second stage poppet is movable with respect to a second stage orifice. A flow passage extension is in fluid communication with the second stage orifice for providing fluid flow from the second stage orifice into an outlet of the valve assembly. A third stage poppet is movable with respect to a third stage orifice which opens into the outlet. The third stage poppet has a longitudinal opening for receiving therein the flow passage extension.
Inventors
- 👤 Kenneth W Zeuner
- 👤 Alonzo B Jarman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:43
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/406
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
202 words
A three stage normally closed valve assembly for providing a substantially high speed third stage opening for a substantially high volume of upstream fluid flow from an inlet into an outlet comprising a first stage solenoid operated poppet valve assembly normally maintained closed for controlling flow of fluid through a second of said three stages, an orifice for a second of said stages, second stage poppet means movable between a second stage valve normally closed state seating in and closing said second stage orifice and a valve open state, flow passage extension means in fluid communication with said second stage orifice for providing fluid flow from said second stage orifice into said outlet of said valve assembly during said second stage valve open state, a third stage orifice opening directly into said outlet, third stage poppet means movable between a valve normally closed state seating in and closing said third stage orifice and a valve open state, said third stage poppet means having a longitudinal opening throughout its length for receiving therein said flow passage extension means said flow passage extension means having one end rigidly secured with respect to said second stage orifice and having the other end floating and nonfixed.
Claim 2
Dependent Claim
202 words
A three stage normally closed valve assembly for providing a substantially high speed third stage opening for a substantially high volume of upstream fluid flow from an inlet into an outlet comprising a first stage solenoid operated poppet valve assembly normally maintained closed for controlling flow of fluid through a second of said three stages, an orifice for a second of said stages, second stage poppet means movable between a second stage valve normally closed state seating in and closing said second stage orifice and a valve open state, flow passage extension means in fluid communication with said second stage orifice for providing fluid flow from said second stage orifice into said outlet of said valve assembly during said second stage valve open state, a third stage orifice opening directly into said outlet, third stage poppet means movable between a valve normally closed state seating in and closing said third stage orifice and a valve open state, said third stage poppet means having a longitudinal opening throughout its length for receiving therein said flow passage extension means said flow passage extension means having one end rigidly secured with respect to said second stage orifice and having the other end floating and nonfixed.
Claim 3
Dependent Claim
29 words
The valve assembly of claim 1 in which said other end of said flow passage extension means being completely open and located further downstream than said third stage orifice.
Claim 4
Dependent Claim
59 words
The valve assembly of claim 1 in which there is provided conduit means for flow of fluid from said inlet through a first restricted passage to a poppet chamber behind said third stage poppet remote from said third orifice, second conduit means including a second restricted passage for fluid flow from said poppet chamber to behind said second poppet.
Claim 5
Dependent Claim
35 words
The valve assembly of claim 3 in which there is provided third conduit means to provide flow of fluid between said poppet chamber and a chamber surrounding the valve plug of said second stage poppet.
Claim 6
Dependent Claim
28 words
The valve assembly of claim 4 in which said first stage is coupled to control fluid flow between said second conduit means and said flow passage extension means.
Claim 7
Dependent Claim
46 words
The valve assembly of claim 1 in which said flow passage extension means has one end rigidly secured with respect to said second stage orifice and having the other end and adjacent outer surface floating and unfixed and located further downstream than said third stage orifice.
Claim 8
Dependent Claim
25 words
The valve assembly of claim 6 in which said second stage poppet means, said second stage orifice and said flow passage extension means are coaxial.
Claim 9
Dependent Claim
16 words
The valve assembly of claim 6 in which said flow passage extension means is tubular shaped.
Claim 10
Dependent Claim
46 words
The valve assembly of claim 1 in which there is provided a housing for receiving said third stage poppet, said third stage poppet having a section of reduced outer dimension to form with said housing a varying volume reset chamber therebetween for receiving fluid under pressure.
Claim 11
Dependent Claim
102 words
The valve assembly of claim 9 in which there is provided check valve means for providing flow of fluid from said inlet into said reset chamber and preventing fluid flow from said reset chamber into said inlet, restricted flow passage means for flow of fluid from said reset chamber to a poppet chamber behind said third stage poppet whereby as said third stage poppet opens fluid is filled in said reset chamber and as third stage poppet closes fluid flow from said reset chamber through said restricted flow passage means to said poppet chamber provides for a slow programmed period of closing.
Claim 12
Dependent Claim
49 words
The valve assembly of claim 10 in which the transverse area of said poppet chamber is greater in value than the combined transverse areas of said reset chamber and said third stage poppet when closed upon which said upstream fluid pressure tends to push said third stage poppet open.
Claim 13
Dependent Claim
25 words
The valve assembly of claim 11 in which there is provided spring means within said poppet chamber tending to bias said third stage poppet closed.
Claim 14
Dependent Claim
65 words
The valve assembly of claim 1 in which said first stage valve assembly and said third stage orifice and poppet means have geometry determined for maximum opening speed with respect to said first and third stages and said second stage orifice and poppet means having geometry determined with respect to said first, second and third stages to provide said substantially high speed third stage opening.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |