Patent US3563511A successfully refreshed from Google Patents.
US3563511A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow control devices
Assignee: Crane Process Flow Technologies Ltd
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Filing: 1969-07-29
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Granted: 1971-02-16
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Expires: 1989-07-29
Abstract
Abstract A plug-cock-type flow control valve wherein one of the ports of the bore of the plug coacts with a member having an aperture which is asymmetrically shaped with respect to the axis of the plug bore, the apertured member being settable in any one of a number of different angular positions relative to the plug bore axis to provide different patterns of development of the effective flow passage through the valve as the plug is rotated between the closed and open positions of the valve.
Inventors
- 👤 Herbert Bentley-Leek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:51
CPC Classifications
F; F16; F16K; F16K5/00; F16K5/08; F16K5/10; F16K5/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
189 words
A plug-cock-type flow control valve comprising a casing having inlet and outlet ports and a plug also having inlet and outlet ports and being rotatably mounted in said casing so as to be rotatable between a first position in which said plug ports are in communication with said casing ports to provide a flow passage through said valve and a second position in which said plug ports are out of communication with said casing ports and said plug prevents flow between said casing inlet and outlet ports, wherein said valve includes an apertured member selectively disposable with respect to said casing in any one of a number of different angular positions about an axis extending through said plug ports in said first position of said plug and having an aperture therein the shape of which is asymmetric with respect to such axis so that said aperture coacts with one of said plug ports during rotation of said plug in a different manner in at least two of said different angular positions whereby to provide different flow characteristics for the flow passage of the valve in such different angular positions.
Claim 2
Dependent Claim
189 words
A plug-cock-type flow control valve comprising a casing having inlet and outlet ports and a plug also having inlet and outlet ports and being rotatably mounted in said casing so as to be rotatable between a first position in which said plug ports are in communication with said casing ports to provide a flow passage through said valve and a second position in which said plug ports are out of communication with said casing ports and said plug prevents flow between said casing inlet and outlet ports, wherein said valve includes an apertured member selectively disposable with respect to said casing in any one of a number of different angular positions about an axis extending through said plug ports in said first position of said plug and having an aperture therein the shape of which is asymmetric with respect to such axis so that said aperture coacts with one of said plug ports during rotation of said plug in a different manner in at least two of said different angular positions whereby to provide different flow characteristics for the flow passage of the valve in such different angular positions.
Claim 3
Dependent Claim
30 words
A valve according to claim 1 wherein said apertured member is disposable in selected angular position during assembly of the valve and remains fixed once the valve has been assembled.
Claim 4
Dependent Claim
24 words
A valve according to claim 1 wherein said apertured member is selectively disposable in any one of a number of equally angularly spaced positions.
Claim 5
Dependent Claim
45 words
A valve according to claim 1 wherein the casing of the valve comprises a main body part housing said plug and an end connection part detachably secured to said main body part by means serving to determine the orientation of said aperture about said axis.
Claim 6
Dependent Claim
15 words
A valve according to claim 4 wherein said end connection part constitutes said apertured member.
Claim 7
Dependent Claim
34 words
A valve according to claim 4 wherein said end connection part is detachably secured to said main body part by bolts engaging in registering holes in said end connection part and main body part.
Claim 8
Dependent Claim
75 words
A valve according to claim 1 wherein the casing of the valve comprises a main body part housing said plug and an end connection part detachably secured to said main body part and in that said apertured member is constituted by a thrust ring arranged to be urged towards said plug by said end connection part to urge a seating ring interposed between said thrust ring and said plug into sealing engagement with said plug.
Claim 9
Dependent Claim
17 words
A valve according to claim 7 wherein said thrust ring is secured to said end connection part.
Claim 10
Dependent Claim
48 words
A valve according to claim 7 wherein the outer periphery of said thrust ring is toothed and a drive worm operable from outside said casing engages the toothed periphery of said thrust ring whereby the angular position of said thrust ring may be varied by operating said worm.
References Cited (Backward Citations)
US694365A
Cited
US2449833A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |