US3703908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Squirt cleaning poppet valve and seat
Assignee: United States Department of the Air Force
•
Filing: 1971-07-26
•
Granted: 1972-11-28
•
Expires: 1991-07-26
Abstract
Abstract A poppet valve and seat, in a particle-entrained fluid flow system, which at closure cause a squirt which, by flushing action, prevents particles from remaining on the sealing interfaces of the poppet valve and of the seat.
Inventors
- 👤 Gilbert F Tellier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:52
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/32; F16K1/34; F16K25/00; F16K25/02; Y; Y10; Y10S; Y10S137/00; Y10S137/904; Y10T; Y10T137/00; Y10T137/4238; Y10T137/4245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
An apparatus, adapted for use in a fluid flow system wherein the fluid contains particles, comprising: a. a poppet valve having, at the valve face, an insert with two concentric annular shoulders, with said valve having a sealing interface; and b. a valve seat having a conduit in which flows the particleentrained fluid, and a counterbore surrounding the exit end of the conduit, in which counterbore is positioned a ring, with said valve seat having a sealing interface which mates with the sealing interface of said valve when said valve and said valve seat close; with said poppet valve and said valve seat so positioned and so dimensioned that, when said valve and said seat are closing and as said valve sealing interface is mating with said valve seat sealing interface, a chamber is formed by said two concentric annular shoulders of said valve, by said ring, and by said counterbore, and particle-entrained fluid is trapped within said chamber, and particle-free fluid is squirted out from said chamber by the closing action, thereby flushing and removing any particles which are between the said sealing interfaces.
Claim 2
Independent Claim
185 words
An apparatus, adapted for use in a fluid flow system wherein the fluid contains particles, comprising: a. a poppet valve having, at the valve face, an insert with two concentric annular shoulders, with said valve having a sealing interface; and b. a valve seat having a conduit in which flows the particleentrained fluid, and a counterbore surrounding the exit end of the conduit, in which counterbore is positioned a ring, with said valve seat having a sealing interface which mates with the sealing interface of said valve when said valve and said valve seat close; with said poppet valve and said valve seat so positioned and so dimensioned that, when said valve and said seat are closing and as said valve sealing interface is mating with said valve seat sealing interface, a chamber is formed by said two concentric annular shoulders of said valve, by said ring, and by said counterbore, and particle-entrained fluid is trapped within said chamber, and particle-free fluid is squirted out from said chamber by the closing action, thereby flushing and removing any particles which are between the said sealing interfaces.
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) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |