US3586029A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically controlling fluid flow according to predetermined volumetric proportions
Assignee: Aero Flow Dynamics Inc
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Filing: 1969-06-16
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Granted: 1971-06-22
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Expires: 1989-06-16
Abstract
Abstract A device for automatically controlling the volumetric fluid flow from two separate sources according to a predetermined ratio, including two conduits leading from the respective sources and extending in generally convergent paths, a balancing vane device disposed at the juncture of the two conduits such that each side of the vane serves as an extension of the surface of a respective conduit, and a flapper valve body associated with each of the two conduits in the region of the balancing vane device, each of the flapper valve bodies being spring-biased in a direction restricting fluid flow through the associated conduit and thus serving as a nozzle, the balancing vane device being supported for rotation about a central pivot, but being spring-biased to remain in an equilibrium position. Each of the contoured sides of the balancing vane includes a portion adapted to cooperate with a respective flapper valve body in the event of a disproportionate fluid flow tending to cause rotation of the balancing vane to correct the disproportionate flow conditions. Both of the flapper valve bodies and the balancing vane may further include external indicators of the position of each of the respective movable members.
Inventors
- 👤 James D Evers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/003; B; B64; B64D; B64D37/00; B64D37/02; B64D37/14; F; F16; F16K; F16K11/00; F16K11/10; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2521; Y10T137/2559; Y10T137/2564; Y10T137/2572; Y10T137/7722; Y10T137/7837; Y10T137/7898
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
138 words
Apparatus for automatically controlling fluid flow from two separate sources according to predetermined volumetric proportions, comprising: two conduit means for conveying fluid, under pressure, from said two separate sources, respectively, said two conduit means converging at their respective outlet ends, check valve means disposed in each of said two conduit means in the region of said outlet ends thereof, said check valve means being spring-biased toward a position whereby each of said conduit means is effectively closed, and balancing vane means disposed between the respective outlet ends of said two conduit means approximately at the point of convergence thereof for responding to a sensed volumetric flow deviating from said predetermined proportions to restrict the fluid flow from either of said two conduit means to restore the proportional fluid flow from said two conduit means to the predetermined ratio.
Claim 2
Dependent Claim
138 words
Apparatus for automatically controlling fluid flow from two separate sources according to predetermined volumetric proportions, comprising: two conduit means for conveying fluid, under pressure, from said two separate sources, respectively, said two conduit means converging at their respective outlet ends, check valve means disposed in each of said two conduit means in the region of said outlet ends thereof, said check valve means being spring-biased toward a position whereby each of said conduit means is effectively closed, and balancing vane means disposed between the respective outlet ends of said two conduit means approximately at the point of convergence thereof for responding to a sensed volumetric flow deviating from said predetermined proportions to restrict the fluid flow from either of said two conduit means to restore the proportional fluid flow from said two conduit means to the predetermined ratio.
Claim 3
Dependent Claim
27 words
Apparatus according to claim 1, wherein said check valve means include flapper valve body means pivotably supported at one side of each of said two conduit means.
Claim 4
Dependent Claim
40 words
Apparatus according to claim 2, wherein said balancing vane means includes a balancing vane having a substantially T-shaped configuration in plan view, the stem portion of said T-shaped member extending between the respective outlet ends of said two conduit means.
Claim 5
Dependent Claim
30 words
Apparatus according to claim 3, wherein said balancing vane means further includes relatively stationary support means, said balancing vane being pivotably supported at said support means for rotation relative thereto.
Claim 6
Dependent Claim
52 words
Apparatus according to claim 4, wherein the two opposite sides of said balancing vane are spaced from one of said two flapper valve body means and contoured so as to define, together with each of said respective valve body means, extensions, of variable cross-sectional area, of each of said two conduit means.
Claim 7
Dependent Claim
44 words
Apparatus according to claim 5, wherein a stem portion of said balancing vane means extends upstream therefrom such that the fluid flow from each of said conduit means exerts a force thereon producing a moment about the pivotal support of said balancing vane means.
Claim 8
Dependent Claim
30 words
Apparatus according to claim 6, wherein said balancing vane is spring-biased at two places on opposite sides of its pivotal support to cause said vane to assume an equilibrium position.
Claim 9
Dependent Claim
80 words
Apparatus according to claim 7, wherein said balancing vane is spring-biased such that the moments produced by the loading thereon are equal and opposite and the equilibrium position of the vane approximately bisects the angle between the two convergent conduit means, wherein the cross-sectional area of said two conduit means is substantially equal, and wherein the spring-bias on each of said check valve means is substantially equal, whereby the volumetric fluid flow from the two conduit means is effectively equalized.
Claim 10
Dependent Claim
23 words
Apparatus according to claim 8, further comprising means for indicating the positions of each of said check valve means and said balancing vane.
Claim 11
Dependent Claim
46 words
Apparatus according to claim 8, wherein said means for indicating the positions of said check valve means and said balancing vane include pointers provided at the respective pivotal supports of each of the three movable members and secured for rotation with the respective associated movable member.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |