US3917221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High-pressure-drop valve
Assignee: Tokico Ltd
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Filing: 1974-08-16
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Granted: 1975-11-04
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Expires: 1994-08-16
Abstract
Abstract A high-pressure drop valve of the type having a valve body or casing and a valve chamber therewithin, a hollow cylindrical cage being fixedly accommodated within the valve chamber and a valve member being slidably fitted within the hollow interior of the cage. A plurality of cage units are fitted successively together in a concentric, substantially liquid-tight manner and respectively having a plurality of orifices formed therein, the orifices of each cage unit being adapted to communicate with corresponding orifices of the other cage units. The cage, made up of a plurality of cage units with a plurality of orifices, constitutes throttling means afforded by the cooperative action of the orifices. Accordingly, as a fluid passes through the orifices of successive cage units, its pressure is reduced in successive multiple stages thereby to obtain a total high pressure drop.
Inventors
- 👤 Shokichi Kubota
- 👤 Tadahiro Akiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:43
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/08; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86718; Y10T137/86759; Y10T137/86791
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
238 words
A high-pressure-drop valve comprising: a valve body having a liquid inlet, a liquid outlet, and a valve chamber provided between and communicating with said inlet and outlet; a cage of substantially hollow cylindrical shape fixedly accommodated within said valve chamber and comprising a plurality of cage units of hollow cylindrical shape having respectively different diameters and mutually fitted in a liquid-tight and concentric arrangement; and a valve member fitted in the hollow interior of said cage and adapted to undergo slidable displacement therewithin, each of said cage units having a plurality of orifices opening at one cylindrical surface of the cage unit and a plurality of holes communicating respectively with said orifices and opening at the other cylindrical surface of the cage unit, said orifices of the cage units being formed to have mutual positional relationships such that the centerline of any orifice of any one cage unit does not coincide with the centerline of a corresponding orifice of a cage unit adjacent to said one cage unit, each of said holes having a diameter greater than that of each of the orifices in a manner communicable with the orifice of the adjacent cage, whereby liquid which has passed through each orifice and correspondings hole of said one cage unit first collides against the inner concave cylindrical surface of an adjacent cage unit and then flows from said hole into the corresponding orifice of said adjacent cage unit.
Claim 2
Dependent Claim
238 words
A high-pressure-drop valve comprising: a valve body having a liquid inlet, a liquid outlet, and a valve chamber provided between and communicating with said inlet and outlet; a cage of substantially hollow cylindrical shape fixedly accommodated within said valve chamber and comprising a plurality of cage units of hollow cylindrical shape having respectively different diameters and mutually fitted in a liquid-tight and concentric arrangement; and a valve member fitted in the hollow interior of said cage and adapted to undergo slidable displacement therewithin, each of said cage units having a plurality of orifices opening at one cylindrical surface of the cage unit and a plurality of holes communicating respectively with said orifices and opening at the other cylindrical surface of the cage unit, said orifices of the cage units being formed to have mutual positional relationships such that the centerline of any orifice of any one cage unit does not coincide with the centerline of a corresponding orifice of a cage unit adjacent to said one cage unit, each of said holes having a diameter greater than that of each of the orifices in a manner communicable with the orifice of the adjacent cage, whereby liquid which has passed through each orifice and correspondings hole of said one cage unit first collides against the inner concave cylindrical surface of an adjacent cage unit and then flows from said hole into the corresponding orifice of said adjacent cage unit.
Claim 3
Dependent Claim
48 words
A high-pressure-drop valve as claimed in claim 1 in which the plurality of orifices of each cage unit are formed with mutually differing diameters in the direction of said slidable displacement of said valve member and the plurality of holes of each cage unit have the same diameter.
Claim 4
Dependent Claim
35 words
A high-pressure-drop valve as claimed in claim 1 in which said plurality of orifices of the plurality of cage units are so formed that the diameters of respectively corresponding orifices differ with each cage unit.
Claim 5
Dependent Claim
36 words
A high-pressure-drop valve as claimed in claim 1 in which said plurality of orifices of the plurality of cage units are so formed that the length of the respectively corresponding orifices differ with each cage unit.
Claim 6
Dependent Claim
116 words
A high-pressure-drop valve as claimed in claim 1 in which said orifices are formed to have respective openings at the inner concavely cylindrical surfaces of said cage units, while said holes communicating with the orifices are formed to have respEctive openings at the outer convex cylindrical surfaces of said cage units, and a liquid flowing through said liquid inlet into the valve body is directed into the hollow inner part of the hollow cylindrical cage, enters the innermost cage unit of the plurality of concentric cage units through the orifices thereof, and, passing successively through said orifices and holes of the intervening cage units, flows out of cage through the holes of the outermost cage unit.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |