Patent US3633219A successfully refreshed from Google Patents.
Patent US3724494A successfully refreshed from Google Patents.
US3724494A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flow regulating valve
Assignee: Individual
•
Filing: 1970-11-02
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Granted: 1973-04-03
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Expires: 1990-11-02
Abstract
Abstract In a chamber of a housing provided with at least one inlet and at least one outlet is accommodated a sleeve having a longitudinally extending passage as well as first and second flow ports communicating with the passage and with the inlet and outlet respectively. A throttling piston is located in the passage displaceable longitudinally thereof with reference to the first ports. A substantially fluid-flow throttling passage is provided in either the outer circumferential surface of the throttling piston or in the inner circumferential surface bounding the passage, and in any case extends longitudinally of the passage and communicates with the respective ports. A control piston is located in the passage downstream of and axially adjacent to the throttling piston for maintaining constant fluid flow through the passage.
Inventors
- 👤 H Alber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:59
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/01; G05D7/0126; G05D7/0133; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7781; Y10T137/7784; Y10T137/7787; Y10T137/7788
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
142 words
A flow regulating valve for fluids, comprising a housing having a chamber provided with at least one inlet and at least one outlet; a sleeve accommodated in said chamber and having a longitudinally extending passage bounded by an inner peripheral surface and first and second flow ports communicating with said passage and with said inlet and outlet, respectively, and which are at least in part bounded by flow-controlling edge portions; a throttling piston in said passage displaceable longitudinally thereof with reference to said first ports and to the edges bounding the same, said throttling piston having an outer peripheral surface; a substantially helical fluid-flow throttling passage provided on an extending longitudinally of one of said surfaces; and a control piston in said passage downstream of and axially adjacent to said throttling piston for maintaining constant the flow of fluid through said passage.
Claim 2
Dependent Claim
142 words
A flow regulating valve for fluids, comprising a housing having a chamber provided with at least one inlet and at least one outlet; a sleeve accommodated in said chamber and having a longitudinally extending passage bounded by an inner peripheral surface and first and second flow ports communicating with said passage and with said inlet and outlet, respectively, and which are at least in part bounded by flow-controlling edge portions; a throttling piston in said passage displaceable longitudinally thereof with reference to said first ports and to the edges bounding the same, said throttling piston having an outer peripheral surface; a substantially helical fluid-flow throttling passage provided on an extending longitudinally of one of said surfaces; and a control piston in said passage downstream of and axially adjacent to said throttling piston for maintaining constant the flow of fluid through said passage.
Claim 3
Dependent Claim
22 words
A flow regulating valve as defined in claim 1, wherein said one surface is said outer peripheral surface of said throttling portion.
Claim 4
Dependent Claim
17 words
A valve as defined in claim 2, wherein said throttling passage is provided in said outer surface.
Claim 5
Dependent Claim
36 words
A valve as defined in claim 2; and further comprising a pair of annular grooves in said outer peripheral surface at the upstream and downstream ends of said throttling passage, respectively, and communicating with the latter.
Claim 6
Dependent Claim
15 words
A valve as defined in claim 2, said throttling passage being of polygonal cross-sectional configuration.
Claim 7
Dependent Claim
16 words
A valve as defined in claim 5, wherein said throttling passage is of triangular cross-sectional configuration.
Claim 8
Dependent Claim
17 words
A valve as defined in claim 5, wherein said throttling passage is of substantially quadratic cross-sectional configuration.
Claim 9
Dependent Claim
18 words
A valve as defined in claim 2, said throttling passage being of at least substantially semicircular cross-sectional configuration.
Claim 10
Dependent Claim
22 words
A valve as defined in claim 2, wherein the cross-sectional area of said throttling passage is on the order of 0.2 mm2.
Claim 11
Dependent Claim
29 words
A valve as defined in claim 2, said throttling piston having an outer diameter of substantially 12 mm, and said throttling passage having a length of substantially 15 cm.
Claim 12
Dependent Claim
50 words
A valve as defined in claim 3, said helical throttling passage having a pitch which is greater than its width in the region of said outer surface so as to form between the turns of said helical throttling passage ribs which are bounded by cylindrical sections of said outer surface.
Claim 13
Dependent Claim
33 words
A valve as defined in claim 2, said throttling passage constituting a spiral throttle; and further comprising a throttling aperture provided in said throttling piston downstream of and communicating with said throttling passage.
Claim 14
Dependent Claim
36 words
A valve as defined in claim 12; further comprising a circumferential groove in the outer periphery of the throttling piston and cOnnecting said throttling passage and throttling aperture for communication of the same with one another.
Claim 15
Dependent Claim
25 words
A valve as defined in claim 13, said throttling passage and a first portion of said throttling aperture having at least substantially identical cross-sectional areas.
Claim 16
Dependent Claim
41 words
A valve as defined in claim 13, said throttling aperture including a second portion configurated as an axially extending triangular recess provided in said peripheral surface of said throttling piston and having a corner facing upstream and communicating with said groove.
Claim 17
Dependent Claim
16 words
A valve as defined in claim 1, wherein said one surface is said inner peripheral surface.
Claim 18
Dependent Claim
26 words
A valve as defined in claim 1; and further comprising antifriction bearing means journalling and guiding said control piston for movement thereof axially of said passage.
Claim 19
Dependent Claim
13 words
A valve as defined in claim 17, said bearing means comprising ball bearings.
Claim 20
Dependent Claim
22 words
A valve as defined in claim 1; and further comprising mechanical displacing means for axially displacing said throttling piston in said passage.
Claim 21
Dependent Claim
22 words
A valve as defined in claim 1; and further comprising electrical displacing means for axially displacing said throttling piston in said passage.
Claim 22
Dependent Claim
22 words
A valve as defined in claim 1; and further comprising hydraulic displacing means for axially displacing said throttling piston in said passage.
Claim 23
Dependent Claim
22 words
A valve as defined in claim 1; and further comprising pneumatic displacing means for axially displacing said throttling piston in said passage.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |