Patent US4558282A successfully refreshed from Google Patents.
Patent US3824040A successfully refreshed from Google Patents.
US3824040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floatless control of liquid level, especially useful in atomizing systems
Assignee: COMPUMP SYST Inc
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Filing: 1972-04-06
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Granted: 1974-07-16
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Expires: 1992-04-06
Abstract
Abstract A system is provided for regulating the level of output fluid of a pump, which system includes primary pumping means for pumping fluid from a supply source, recycle pumping means for pumping accumulated output fluid, means for combining the fluid output of the primary pumping means and recycle pumping means into a combined fluid output stream, means for accumulating combined fluid output stream, means for restricting said combined fluid output stream whereby pressure variations in the combined fluid output stream can be sensed, and fluid pressure responsive control means responsive to said pressure variations for regulating flow of the combined fluid output stream to the primary pumping means and to the means for accumulating combined fluid output stream. In addition, a system is provided for atomizing a liquid in a gas, such as oil in air, employing the above system for regulating the level of output fluid to a pump.
Inventors
- 👤 D Aronson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:43
CPC Classifications
F; F04; F04B; F04B1/00; F04B1/04; F04B1/10; F04B1/107; F04B1/1071; F04B13/00; F04B13/02; F04B23/00; F04B23/04; F04B23/08; F04B23/10; F04B23/103; F04B23/12; F04C; F04C18/00; F04C18/30; F04C18/34; F04C18/344; Y; Y10; Y10T; Y10T137/00; Y10T137/2931; Y10T137/3003; Y10T137/3006
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
150 words
A liquid flow system for producing a regulated liquid flow comprising a liquid reservoir having an inlet, a liquid level control outlet and a liquid supply outlet disposed below said control outlet, means including a pressure responsive flow control for feeding liquid to said reservoir inlet to fill said reservoir to a level at least as high as said control outlet, means for maintaining a gas in the remainder of said reservoir, means for effecting the flow of liquid and gas, which comprises a two-phase fluid, from said control outlet and producing fluid pressure corresponding to the relative quantities of liquid and gas entering said control outlet and means coupling the last means to said pressure responsive flow control to modify the rate of liquid flow to the first said means in accordance with the density of said fluid and thereby maintaining a substantially uniform liquid level in said reservoir.
Claim 2
Dependent Claim
150 words
A liquid flow system for producing a regulated liquid flow comprising a liquid reservoir having an inlet, a liquid level control outlet and a liquid supply outlet disposed below said control outlet, means including a pressure responsive flow control for feeding liquid to said reservoir inlet to fill said reservoir to a level at least as high as said control outlet, means for maintaining a gas in the remainder of said reservoir, means for effecting the flow of liquid and gas, which comprises a two-phase fluid, from said control outlet and producing fluid pressure corresponding to the relative quantities of liquid and gas entering said control outlet and means coupling the last means to said pressure responsive flow control to modify the rate of liquid flow to the first said means in accordance with the density of said fluid and thereby maintaining a substantially uniform liquid level in said reservoir.
Claim 3
Dependent Claim
62 words
A liquid flow system according to claim 1 wherein said means for feeding a liquid to said reservoir includes a conduit and a pressure relief valve coupled thereto, said means for effecting flow of liquid and gas includes pumping means having an outlet and the last said means includes a second conduit coupling the last said outlet to the first said conduit.
Claim 4
Dependent Claim
87 words
A liquid flow system according to claim 1 wherein said feeding means cOmprises a pump having inlet means and outlet means, means coupling said inlet means to a liquid supply, means coupling said outlet means to the inlet of said reservoir, means restricting the liquid flow from said pump to cause a liquid pressure to be developed in said outlet means, and said means for effecting flow of liquid and gas from said control outlet includes a conduit coupling the last said outlet to said inlet means.
Claim 5
Dependent Claim
36 words
A liquid flow system according to claim 3 wherein said inlet means on said pump comprises individual inlets connected to said liquid supply and said control outlet and means for successively admitting liquid to each inlet.
Claim 6
Dependent Claim
25 words
A liquid flow system according to claim 4 wherein said pump includes means for compressing a gas and delivering compressed gas to said outlet means.
Claim 7
Dependent Claim
29 words
A liquid flow system according to claim 5 wherein said reservoir is closed and has a gas outlet communicating therewith at a level above the level of the liquid.
Claim 8
Dependent Claim
75 words
A liquid flow system according to claim 5 wherein said pump is a rotary, vane-type pump having a circular cavity, a circular rotor eccentrically positioned in said cavity and having a plurality of radial slots with vanes slidably disposed therein, and gas and liquid inlet and outlet means communicating with the space between the rotor and the cavity wall and the spaces between the inner ends of the vanes and the bases of said slots.
Claim 9
Dependent Claim
36 words
A liquid flow system ccording to claim 7 wherein a gas inlet and a gas outlet communicate with the first said space and a liquid inlet and a liquid outlet communicate with the last said spaces.
Claim 10
Dependent Claim
77 words
A liquid flow system according to claim 7 wherein said rotor includes slots of at least two different depths, vanes of at least two different depths slidably engaging said slots and an inlet and an outlet communicating with the spaces between the vanes of one depth and the bases of the associated slots, and an inlet and an outlet communicating with the spaces between the vanes of the other depth and the bases of the associated slots.
Claim 11
Dependent Claim
54 words
A liquid flow system according to claim 7 wherein said gas inlet and outlet means communicate with the first said space and said liquid inlet and outlet means comprise at least individual inlets and at least one outlet communicating with the second said spaces and liquid is admitted successively to the last said inlets.
Claim 12
Dependent Claim
21 words
A liquid flow system according to claim 3 wherein said pump includes a pressure relief valve communicating with said pump outlet.
Claim 13
Dependent Claim
219 words
A liquid flow system for producing a regulated liquid flow comprising a liquid reservoir having an inlet, a liquid level control outlet and a liquid supply outlet disposed below said control outlet, means including a pressure responsive flow control for feeding liquid to said reservoir inlet to fill said reservoir to a level at least as high as said control outlet, means for maintaining a gas in the remainder of said reservoir, means for effecting the flow of liquid and gas from said control outlet and producing fluid pressure corresponding to the relative quantities of liquid and gas entering said control outlet and means coupling the last said means to said pressure responsive flow control to modify the rate of liquid flow to said reservoir, said feeding means comprising a pump having inlet means and outlet means, means coupling said inlet means to a liquid supply, means coupling said outlet means to the inlet of said reservoir, means restricting the liquid flow from said pump to cause a liquid pressure to be developed in said outlet means, and said means for effecting flow of liquid and gas from said control outlet includes a conduit coupling the last said outlet to said inlet means, said pump further including a pressure relief valve coupling said pump outlet with said pump inlet.
Claim 14
Dependent Claim
219 words
A liquid flow system for producing a regulated liquid flow comprising a liquid reservoir having an inlet, a liquid level control outlet and a liquid supply outlet disposed below said control outlet, means including a pressure responsive flow control for feeding liquid to said reservoir inlet to fill said reservoir to a level at least as high as said control outlet, means for maintaining a gas in the remainder of said reservoir, means for effecting the flow of liquid and gas from said control outlet and producing fluid pressure corresponding to the relative quantities of liquid and gas entering said control outlet and means coupling the last said means to said pressure responsive flow control to modify the rate of liquid flow to said reservoir, said feeding means comprising a pump having inlet means and outlet means, means coupling said inlet means to a liquid supply, means coupling said outlet means to the inlet of said reservoir, means restricting the liquid flow from said pump to cause a liquid pressure to be developed in said outlet means, and said means for effecting flow of liquid and gas from said control outlet includes a conduit coupling the last said outlet to said inlet means, said pump further including a pressure relief valve coupling said pump outlet with said pump inlet.
Claim 15
Dependent Claim
108 words
A liquid flow system according to claim 3 wherein said pump is a rotary, vane-type pump having a circular cavity, a circular rotor eccentrically positioned in said cavity and having a plurality of radIal slots with vanes slidably disposed therien, and liquid inlet and outlet means communicating with the space between the rotor and the cavity wall and the spaces between the inner end of the vanes and the bases of said slots and wherein the liquid to be pumped is fed to the inlet communicating with the first said space and the outlet of the first said space is coupled to the inlet to said second spaces.
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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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |