US4568061A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control assembly
Assignee: Foster Wheeler Energy Corp
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Filing: 1983-10-03
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Granted: 1986-02-04
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Expires: 2003-10-03
Abstract
Abstract A flow control assembly in which a valve member is movable in a housing between a first position in which it permits the flow of material from an inlet to said housing, through said housing and to an outlet in said housing, and a second position in which it prevents the flow. A shield is provided in said housing which is movable to and from a position in which it shields the valve member from said material.
Inventors
- 👤 George B. Rabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:04
CPC Classifications
F; F16; F16K; F16K25/00; F16K25/04; F16K5/00; F16K5/06; F16K5/0605; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
170 words
A flow control assembly comprising a housing having an inlet and an outlet; a ball valve having a bore and movable in said housing between a first position in which said bore registers with said inlet and outlet to permit the flow of material from said inlet, through said housing and to said outlet, and a second position in which it prevents said flow; handle means secured to said ball valve and extending through said housing; a shield plate located in a slightly spaced relationship to the outer surface of said ball valve between said ball valve and said inlet and having a curvature complementary to a portion of the outer surface of said ball valve, said shield plate being movable to and from a position in which it shields said ball valve from said material; a handle secured to said shield plate and extending through said housing; and boss means extending from said shield plate and having an opening through which the handle means of said ball valve extends.
Claim 2
Dependent Claim
170 words
A flow control assembly comprising a housing having an inlet and an outlet; a ball valve having a bore and movable in said housing between a first position in which said bore registers with said inlet and outlet to permit the flow of material from said inlet, through said housing and to said outlet, and a second position in which it prevents said flow; handle means secured to said ball valve and extending through said housing; a shield plate located in a slightly spaced relationship to the outer surface of said ball valve between said ball valve and said inlet and having a curvature complementary to a portion of the outer surface of said ball valve, said shield plate being movable to and from a position in which it shields said ball valve from said material; a handle secured to said shield plate and extending through said housing; and boss means extending from said shield plate and having an opening through which the handle means of said ball valve extends.
Claim 3
Dependent Claim
30 words
The assembly of claim 1 wherein said valve member is a ball valve having a bore extending therethrough which registers with said inlet and said outlet in said first position.
Claim 4
Dependent Claim
19 words
The assembly of claim 2 further comprising handle means secured to said ball valve and extending through said housing.
Claim 5
Dependent Claim
43 words
The assembly of claim 3 wherein said shield means comprises a shield plate located in a slightly spaced relationship to the outer surface of said ball valve and having a curvature complementary to a portion of the outer surface of said ball valve.
Claim 6
Dependent Claim
22 words
The assembly of claim 4 wherein said shield means further comprises a handle secured to said shield and extending through said housing.
Claim 7
Dependent Claim
118 words
A flow control assembly comprising a housing having an inlet, an outlet and a spherical chamber extending between said inlet and said outlet, a ball valve movable in said chamber between a first position in which it permits the flow of material from said inlet, through said housing and to said outlet, and a second position in which it prevents said flow; and a shield plate disposed in said chamber between said inlet and said valve member, said shield plate having a curvature corresponding to the curvature of a portion of the surface of said ball valve and being movable in said chamber to and from a position in which it shields said valve member from said material.
Claim 8
Dependent Claim
118 words
A flow control assembly comprising a housing having an inlet, an outlet and a spherical chamber extending between said inlet and said outlet, a ball valve movable in said chamber between a first position in which it permits the flow of material from said inlet, through said housing and to said outlet, and a second position in which it prevents said flow; and a shield plate disposed in said chamber between said inlet and said valve member, said shield plate having a curvature corresponding to the curvature of a portion of the surface of said ball valve and being movable in said chamber to and from a position in which it shields said valve member from said material.
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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |