Patent US3826281A successfully refreshed from Google Patents.
US3826281A
Expired / Lapsed
US
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Throttling ball valve
Assignee: United States Department of the Navy
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Filing: 1969-10-29
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Granted: 1974-07-30
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Expires: 1989-10-29
Abstract
Abstract A ball valve having a ball with a porous core which acts as a filter and a noise reduction element, allowing use of the valve as a throttling valve as well as a shut-off valve.
Inventors
- 👤 E Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:11
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/06; F16K5/0605; F16K27/00; F16K27/06; F16K27/067; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86743
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
A ball valve comprising: a valve body having an upstream end face, a downstream face, and a bore extending therethrough intersecting said end faces; a valve ball moveably positioned in said bore, said valve ball having a porous core therethrough forming an extension of the spherical contour of said valve ball whereby said valve ball is essentially a complete sphere and being rotatable between an open position wherein said core and said bore are aligned and a closed position wherein said bore and said core are disaligned; control means operably connected to said valve ball for rotating said valve ball between said open and closed positions; and seal means disposed in said bore and engaging said valve ball in a substantially fluid tight fashion.
Claim 2
Dependent Claim
124 words
A ball valve comprising: a valve body having an upstream end face, a downstream face, and a bore extending therethrough intersecting said end faces; a valve ball moveably positioned in said bore, said valve ball having a porous core therethrough forming an extension of the spherical contour of said valve ball whereby said valve ball is essentially a complete sphere and being rotatable between an open position wherein said core and said bore are aligned and a closed position wherein said bore and said core are disaligned; control means operably connected to said valve ball for rotating said valve ball between said open and closed positions; and seal means disposed in said bore and engaging said valve ball in a substantially fluid tight fashion.
Claim 3
Dependent Claim
23 words
The ball valve of claim 1 wherein said porous core has a larger cross-sectional area within said valve ball than at its surface.
Claim 4
Dependent Claim
14 words
The ball valve of claim 1 wherein said porous core is a sintered metal.
Claim 5
Dependent Claim
54 words
The ball valve of claim 3 wherein said sintered metal extends to and forms an essentially smooth finish at the surface of said valve ball and is relatively larger in cross-sectional area and more porous at the interior of said valve ball than at its surface, said surface being in essence, a complete sphere.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |