US3907249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve device for restricting the flow of a liquid by a helical flow passage
Assignee: B A INSTALLATIONSUTVECKLING AB
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Filing: 1974-03-15
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Granted: 1975-09-23
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Expires: 1994-03-15
Abstract
Abstract A silent, flow reducing liquid valve includes a cylindrical body 2 (FIG. 1) having a helical liquid passage 6 in the outer surface thereof. The body 2 is axially movable within a surrounding sleeve 1 provided with liquid outlet passages 7. The sleeve is securely held in position by the valve cap 12.
Inventors
- 👤 Bengt Arne Persson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 00:14
CPC Classifications
F; F16; F16K; F16K47/00; F16K47/08; F16K47/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A valve device for regulating the flow of a liquid in a valve housing supporting a cap-member in which a valve-stem is journalled for axially adjusting a closure member with respect to a valve seating, the flow being restricted by a helical flow passage in the valve housing, characterized in that the helical passage is located in a cylindrical body surrounded by a cylindrical sleeve provided with outlet apertures for the liquid having passed the helical passage, said sleeve being fixedly mounted with one end portion engaged by the valve housing and the other end portion engaged by the cap-member and in coaxial relationship to the valve-stem.
Claim 2
Dependent Claim
107 words
A valve device for regulating the flow of a liquid in a valve housing supporting a cap-member in which a valve-stem is journalled for axially adjusting a closure member with respect to a valve seating, the flow being restricted by a helical flow passage in the valve housing, characterized in that the helical passage is located in a cylindrical body surrounded by a cylindrical sleeve provided with outlet apertures for the liquid having passed the helical passage, said sleeve being fixedly mounted with one end portion engaged by the valve housing and the other end portion engaged by the cap-member and in coaxial relationship to the valve-stem.
Claim 3
Dependent Claim
43 words
A valve device as claimed in claim 1, characterized in that the helical passage is located in the surface of the cylindrical body which is slidable in the surrounding sleeve and by means of the valve-stem is movable to close the valve seating.
Claim 4
Dependent Claim
95 words
A valve device as claimed in claim 1, characterized in that the helical passage is located in the surface of the cylindrical body which is rigidly connected to the surrounding sleeve and is provided with a central boring through which the flow of liquid is passed from the valve seating to the end portion of the central boring facing the cap-member, from which end portion the flow of liquid is passed to the helical passage and which end portion is adapted to form a valve seating coacting with a closure member attached to the valve-stem.
Claim 5
Dependent Claim
21 words
A valve device as claimed in claim 3, characterized in that also the central boring is provided with a helical passage.
Claim 6
Dependent Claim
51 words
A valve device as claimed in claim 1, characterized in that the end portion of the valve-stem is provided with a cylindrical head which is rotatably connected to the valve-stem and around its periphery is provided with a sealing member slidingly and sealingly applied to the inner wall of the cap-member.
Claim 7
Dependent Claim
60 words
A valve device as claimed in claim 1, characterized in that an elastic sleeve member is positioned around the surface of the cylindrical body, a small play being positioned between the major portion of the elastic sleeve and said surrounding sleeve, the elastic sleeve being seealingly connected with the surrounding sleeve at its outlet opening but before its outlet apertures.
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) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |