US3752176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow proportioning device
Assignee: Individual
•
Filing: 1972-02-17
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Granted: 1973-08-14
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Expires: 1992-02-17
Abstract
Abstract A proportioning device for maintaining a constant flow ratio to two separate outlets regardless of changes in the pressure of such outlets, in which the fluid pressure in each outlet is applied to a valve means to adjust the position of the valve means to compensate for pressure changes.
Inventors
- 👤 W King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:09
CPC Classifications
F; F04; F04B; F04B11/00; F04B11/0008; F04B11/0016; F01; F01L; F01L25/00; F01L25/02; F01L25/04; F01L25/06; F01L25/063; F04B11/0091; F04B9/00; F04B9/08; F04B9/10; F04B9/109; F04B9/111; F04B9/113; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
128 words
A proportioning device for dividing fluid flow between two different conduits, the pressure in one of which is variable with respect to the pressure in the other, comprising a pair of ports, one in communication with each conduit, means operable to modify the sizes of said ports in response to a change in the ratio of said pressures to equalize the pressures upstream of said ports, passage means connected to conduct fluid from said conduit to said port size modifying means, a second pair of ports upstream of said equalized pressures, a single inlet in communication with said upstream pair of ports to supply fluid through them, and means for adjusting the size of one of said upstream pair of ports to control the proportion of flow therethrough.
Claim 2
Dependent Claim
128 words
A proportioning device for dividing fluid flow between two different conduits, the pressure in one of which is variable with respect to the pressure in the other, comprising a pair of ports, one in communication with each conduit, means operable to modify the sizes of said ports in response to a change in the ratio of said pressures to equalize the pressures upstream of said ports, passage means connected to conduct fluid from said conduit to said port size modifying means, a second pair of ports upstream of said equalized pressures, a single inlet in communication with said upstream pair of ports to supply fluid through them, and means for adjusting the size of one of said upstream pair of ports to control the proportion of flow therethrough.
Claim 3
Dependent Claim
29 words
A proportioning device as defined by claim 1 and including means operable in response to a change in the pressure differential across said upstream ports to change their size.
Claim 4
Dependent Claim
187 words
A proportioning device for dividing a liquid received at an inlet therein at a constant flow rate between two different outlet conduits at a constant predetermined ratio, wherein the pressure in one conduit is variable with respect to the pressure in the other conduit, comprising a port in communication with said one conduit, first valve means associated with said port, passage means connected to conduct fluid from said one conduit to said first valve means, said first valve means being operable to increase or decrease the size of said port in response to an increase or decrease, respectively, in the pressure in said one conduit, second valve means having a first variable opening establishing communication between said inlet and said port, and a second variable opening establishing communication between said inlet and said other conduit, and passage means connected to conduct fluid from said inlet and fluid from said other conduit to said second valve means in opposition to each other, said second valve means being movable in response to the pressure differential between the inlet and the other conduit to vary the size of said openings.
Claim 5
Dependent Claim
187 words
A proportioning device for dividing a liquid received at an inlet therein at a constant flow rate between two different outlet conduits at a constant predetermined ratio, wherein the pressure in one conduit is variable with respect to the pressure in the other conduit, comprising a port in communication with said one conduit, first valve means associated with said port, passage means connected to conduct fluid from said one conduit to said first valve means, said first valve means being operable to increase or decrease the size of said port in response to an increase or decrease, respectively, in the pressure in said one conduit, second valve means having a first variable opening establishing communication between said inlet and said port, and a second variable opening establishing communication between said inlet and said other conduit, and passage means connected to conduct fluid from said inlet and fluid from said other conduit to said second valve means in opposition to each other, said second valve means being movable in response to the pressure differential between the inlet and the other conduit to vary the size of said openings.
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) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |