US3586289A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve unit and stem packing assembly
Assignee: Boeing North American Inc
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Filing: 1969-11-21
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Granted: 1971-06-22
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Expires: 1989-11-21
Abstract
Abstract A valve unit of the type including a body member having a passage therethrough and an aperture found therein transverse to said passage. A valve element disposed in said body for rotation between the valve-open and valve-closed positions by a stem extending outwardly of said body through said aperture. Sealing means for preventing leakage past said aperture, said sealing means including at least one packing assembly comprised of a wedge ring having a frustoconical inner peripheral surface, and an O-ring disposed radially inward of said wedge ring. The seal assembly is carried in a chamber defined partially by a relatively movable member and a stationary seat which encircles said stem, such that said wedge ring is effective when compressed to force the O-ring into sealing position relative to the clearance space between said seat and said stem.
Inventors
- 👤 Werner K Priese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:54
CPC Classifications
F; F16; F16K; F16K41/00; F16K41/16; F16K41/02; F16K41/04; F16K41/043; F16K41/046; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
212 words
A valve unit comprising: a body member having a fluid passageway therethrough and an aperture formed therein which intersects said passageway; a valve element disposed within said body member and being rotatable between a valve-open position and a valve-closed position; a stem interconnected with said valve element and extending outwardly through said aperture formed in said body member, said stem being rotatably mounted relative to said body member for affecting rotation of said valve element; sealing means for preventing the passage of fluid outwardly of said body member along said stem, said sealing means including at least one seal assembly comprised of a wedge ring and an O-ring disposed radially inward of said wedge ring; and a seal assembly receiving chamber which encircles said stem and is defined by a seat surface for said assembly and a relatively movable member engaged with said wedge ring to compress said ring against the seat surface; said wedge ring having a frustoconical inner peripheral surface converging toward said stem in a direction away from said seat surface such that upon application of compressive forces to said wedge ring, said O-ring is forced toward the inner edge of said seat surface to seal the clearance space between the inner periphery of said surface and said stem.
Claim 2
Dependent Claim
212 words
A valve unit comprising: a body member having a fluid passageway therethrough and an aperture formed therein which intersects said passageway; a valve element disposed within said body member and being rotatable between a valve-open position and a valve-closed position; a stem interconnected with said valve element and extending outwardly through said aperture formed in said body member, said stem being rotatably mounted relative to said body member for affecting rotation of said valve element; sealing means for preventing the passage of fluid outwardly of said body member along said stem, said sealing means including at least one seal assembly comprised of a wedge ring and an O-ring disposed radially inward of said wedge ring; and a seal assembly receiving chamber which encircles said stem and is defined by a seat surface for said assembly and a relatively movable member engaged with said wedge ring to compress said ring against the seat surface; said wedge ring having a frustoconical inner peripheral surface converging toward said stem in a direction away from said seat surface such that upon application of compressive forces to said wedge ring, said O-ring is forced toward the inner edge of said seat surface to seal the clearance space between the inner periphery of said surface and said stem.
Claim 3
Dependent Claim
59 words
The combination as defined in claim l, wherein a pair of said sealing assemblies and seal assembly receiving chambers are provided along the length of said stem the frustoconical surface of the innermost seal assembly converges toward the inner end of said stem, while the frustoconical surface of the outer assembly converges toward the outer end of said stem.
Claim 4
Dependent Claim
40 words
The combination as defined in claim 2, wherein said body member includes an annular flange disposed intermediate the ends of said aperture to define a pair of oppositely facing shoulders, said shoulders providing the seat surface for the respective assemblies.
Claim 5
Dependent Claim
57 words
The combination as defined in claim 2, wherein the relatively movable member which defines the innermost one of said seal chambers is provided by a flange formed on said stem inwardly of said body, and said relatively movable member for the other said seal assembly receiving chamber being provided by a compression ring carried by said stem.
Claim 6
Dependent Claim
24 words
The combination as defined in claim l, wherein said wedge ring is formed from an elastically compressible, plasticlike material possessing chemical and heat-resistant properties.
Claim 7
Dependent Claim
196 words
A valve unit comprising a body member having a fluid passageway extending therethrough and an aperture formed therein transverse to said passageway, a valve element disposed in said body member for movement between a valve-open condition and a valve-closed condition; a stem interconnected with said valve element and extending outwardly of said body through said aperture for imparting movement to said valve element, and sealing means to prevent the passage of fluid through said aperture along said stem; the improvement wherein said sealing means includes: at least one seal assembly comprised of an annular wedge ring having a frustoconical inner peripheral surface and and O-ring positioned radially inward of said wedge ring and engaged by said frustoconical surface; and a seal-receiving chamber for said assembly, said chamber being defined by a seating surface for said assembly on said body in encircling relation to said stem, and a relatively movable member engaged with said wedge ring to compress said ring against said surface, such that upon the application of compressive forces to said wedge ring, said O-ring will be force into the clearance space between said seating surface and said stem to provide an effective stem seal.
Claim 8
Dependent Claim
196 words
A valve unit comprising a body member having a fluid passageway extending therethrough and an aperture formed therein transverse to said passageway, a valve element disposed in said body member for movement between a valve-open condition and a valve-closed condition; a stem interconnected with said valve element and extending outwardly of said body through said aperture for imparting movement to said valve element, and sealing means to prevent the passage of fluid through said aperture along said stem; the improvement wherein said sealing means includes: at least one seal assembly comprised of an annular wedge ring having a frustoconical inner peripheral surface and and O-ring positioned radially inward of said wedge ring and engaged by said frustoconical surface; and a seal-receiving chamber for said assembly, said chamber being defined by a seating surface for said assembly on said body in encircling relation to said stem, and a relatively movable member engaged with said wedge ring to compress said ring against said surface, such that upon the application of compressive forces to said wedge ring, said O-ring will be force into the clearance space between said seating surface and said stem to provide an effective stem seal.
Claim 9
Dependent Claim
25 words
The combination as defined in claim 6 wherein said frustoconical surface converges radially inward toward said stem in a direction away from said seating surface.
Claim 10
Dependent Claim
54 words
The combination as defined in claim 6, wherein said sealing means includes two of said sealing assemblies and said body member includes an annular flange disposed intermediate the ends of said aperture to define a pair of oppositely facing annular shoulders, with one of said shoulders providing the seating surface for the respective assemblies.
Claim 11
Dependent Claim
30 words
The combination as defined in claim 8, wherein the frustoconical surfaces of each wedge ring converge radially inward toward said stem in a direction away from its respective seating surface.
Claim 12
Dependent Claim
56 words
The combination as defined in claim 8 wherein the relatively movable member for one said sealing assembly receiving chamber is defined by a flange formed on said stem inwardly of said body, and said relatively movable member for the other said seal assembly receiving chamber being provided by a compression ring slidably mounted on said stem.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |