Patent US4248270A successfully refreshed from Google Patents.
US4248270A
Expired / Lapsed
US
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Reduced noise water valve provided with flow control
Assignee: Ranco Inc of Delaware
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Filing: 1980-01-11
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Granted: 1981-02-03
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Expires: 2000-01-11
Abstract
Abstract The inlet to the water valve is provided with a resilient flow control device which deflects under pressure to reduce the inlet orifice and maintain substantially uniform flow. On the outlet side of the flow control the liquid is forced to turn at right angles to reach the multiple restricted orifices where the liquid again must turn 90°. At low pressures the flow is divided between 8 orifices 4 of which are gradually shut off by deflection of the flow control so at high inlet pressure the flow is divided among 4 orifices positioned in channels protecting them from being shut off by deflection of the flow control. The reduced velocity caused by the two 90° turns in flow results in substantial reduction of flow noise.
Inventors
- 👤 E. A. Ostrowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:11
CPC Classifications
F; F16; F16K; F16K47/00; F16K31/00; F16K31/12; F16K31/36; F16K31/40; F16K31/402; F16K31/404; F16K47/02; G; G05; G05D; G05D7/00; G05D7/01; G05D7/0106; G05D7/012; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7792
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
209 words
The combination with a water valve having a body provided with an inlet and a resilient centrally apertured flow control device mounted in the inlet and having a dashed downstream face and deformed by inlet pressure to provide generally uniform flow through the device with varying inlet pressure, of means for reducing the flow noise comprising, a partition in the inlet, downstream of the flow control device, having a blind hole therein in alignment with the central aperture of the flow control device surrounded by an annular surface which is engaged by the dished downstream face of the flow control device as the device deflects under inlet pressure, a plurality of first ports through the partition from said annular surface to the outlet side of the partition and subject to being closed off by said flow control device as the flow control device deflects against the annular surface, a plurality of grooves in said annular surface, one end of each groove communicating with said blind hole to receive flow passing through the flow control device under all flow conditions, and a plurality of second ports through the partition each located in one of said grooves remote from the blind hole and leading to the outlet side of the partition.
Claim 2
Dependent Claim
209 words
The combination with a water valve having a body provided with an inlet and a resilient centrally apertured flow control device mounted in the inlet and having a dashed downstream face and deformed by inlet pressure to provide generally uniform flow through the device with varying inlet pressure, of means for reducing the flow noise comprising, a partition in the inlet, downstream of the flow control device, having a blind hole therein in alignment with the central aperture of the flow control device surrounded by an annular surface which is engaged by the dished downstream face of the flow control device as the device deflects under inlet pressure, a plurality of first ports through the partition from said annular surface to the outlet side of the partition and subject to being closed off by said flow control device as the flow control device deflects against the annular surface, a plurality of grooves in said annular surface, one end of each groove communicating with said blind hole to receive flow passing through the flow control device under all flow conditions, and a plurality of second ports through the partition each located in one of said grooves remote from the blind hole and leading to the outlet side of the partition.
Claim 3
Dependent Claim
36 words
The combination of claim 1 in which the flow control device is subject to some deflection into said grooves under high inlet pressure whereby the cross sectional area of the grooves is reduced under such conditions.
Claim 4
Dependent Claim
30 words
The combination according to claim 2 in which the flow control device has a central aperture and all of said ports are located out of alignment with said central aperture.
Claim 5
Dependent Claim
21 words
The combination according to claim 3 in which the first ports are substantially equally spaced about the center of the partition.
Claim 6
Dependent Claim
17 words
The combination according to claim 4 in which said grooves radiate from the center of said partition.
Claim 7
Dependent Claim
45 words
The combination according to claim 5 in which the end wall of said blind hole in the partition in alignment with the central aperture in the flow control device is solid so water passing through the flow control device impinges thereon and is deflected thereby.
Claim 8
Dependent Claim
167 words
The combination with a water valve having a body provided with an inlet and a resilient centrally apertured flow control device mounted in the inlet and having a dished downstream face and deformed by inlet pressure to provide generally uniform flow through the device with varying inlet pressure, of means for reducing the flow noise comprising, a partition in the inlet downstream of the flow control device and having a blind hold therein in alignment with the central aperture of the flow control device surrounded by an annular surface which is engaged by the dished downstream face of the flow control device as the device deflects under inlet pressure, a plurality of first ports through said partition from said annular surface to the outlet side of the partition, a plurality of passages in said partition receiving flow from the blind hole, a port in each passage leading through the partition, and all of said ports being located out of alignment with flow through the flow control device.
Claim 9
Dependent Claim
167 words
The combination with a water valve having a body provided with an inlet and a resilient centrally apertured flow control device mounted in the inlet and having a dished downstream face and deformed by inlet pressure to provide generally uniform flow through the device with varying inlet pressure, of means for reducing the flow noise comprising, a partition in the inlet downstream of the flow control device and having a blind hold therein in alignment with the central aperture of the flow control device surrounded by an annular surface which is engaged by the dished downstream face of the flow control device as the device deflects under inlet pressure, a plurality of first ports through said partition from said annular surface to the outlet side of the partition, a plurality of passages in said partition receiving flow from the blind hole, a port in each passage leading through the partition, and all of said ports being located out of alignment with flow through the flow control device.
Claim 10
Dependent Claim
30 words
The combination according to claim 7 in which the flow control device deflects under increasing inlet pressure to progressively close off said first ports and thereafter progressively restrict said passages.
Claim 11
Dependent Claim
41 words
The combination according to claim 8 in which one side of each of said passages is open to said surface of said partition and the flow control device is subject to deformation into each passage when subjected to high inlet pressure.
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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) | 1984-02-03 | 1984-08-04 | 1985-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-03 | 1988-08-04 | 1989-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-03 | 1992-08-04 | 1993-02-03 | $7700.00 | Window Closed / Lapsed |