Patent US2037894A successfully refreshed from Google Patents.
US3673853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas content of liquid determination
Assignee: ABB Automation Inc
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Filing: 1970-05-11
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Granted: 1972-07-04
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Expires: 1990-05-11
Abstract
Abstract In a continuous liquid carbonation process, a pump draws liquid from a line and pumps it back in again. Periodically, the connections of the pump to the line are shut-off, trapping a sample of carbonated liquid in the pump, which agitates same, causing CO2 to evolve into a vapor space. Such agitation eventually causes the sample to become an equilibrium mixture of free CO2 and liquid solution of CO2. Pressure and temperature measurements on the equilibrium mixture allow calculation of the CO2 content. The calculation can be carried out automatically and used for automatically controlling the carbonation of the liquid.
Inventors
- 👤 Augustus W Griswold
- 👤 James R Tompkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:04
CPC Classifications
G; G01; G01N; G01N7/00; G01N7/14
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
253 words
A gas-content-of-liquid measuring device comprising, in combination, a first chamber having a first interior space; a second chamber having a second interior space; first means, said first means being associated with said first chamber, having a first state and a second state, and being operable from either thereof to the other; second means, said second means being associated with said second chamber, having a first state and a second state, and being operable from either thereof to the other; an impeller in said first interior space for exerting mechanical forces on liquid in said first interior space for impelling said liquid from a first place in said first interior space to a second place, said Second place being in said first interior space but removed from said first place; said first means including liquid conducting means providing a passage conducting liquid between said first place and a third place external to said spaces, and providing a passage for conducting liquid between said second place and said third place; said first state of said first means being one in which both said passages are simultaneously open, and the said second state thereof being one in which both said passages are closed; said first state of said second means being one in which said said interior space of said second chamber is isolated from said interior space of said first chamber, and said second state thereof being one in which said second means provides for effectively interconnecting said interior spaces for conduction of fluid therebetween.
Claim 2
Dependent Claim
253 words
A gas-content-of-liquid measuring device comprising, in combination, a first chamber having a first interior space; a second chamber having a second interior space; first means, said first means being associated with said first chamber, having a first state and a second state, and being operable from either thereof to the other; second means, said second means being associated with said second chamber, having a first state and a second state, and being operable from either thereof to the other; an impeller in said first interior space for exerting mechanical forces on liquid in said first interior space for impelling said liquid from a first place in said first interior space to a second place, said Second place being in said first interior space but removed from said first place; said first means including liquid conducting means providing a passage conducting liquid between said first place and a third place external to said spaces, and providing a passage for conducting liquid between said second place and said third place; said first state of said first means being one in which both said passages are simultaneously open, and the said second state thereof being one in which both said passages are closed; said first state of said second means being one in which said said interior space of said second chamber is isolated from said interior space of said first chamber, and said second state thereof being one in which said second means provides for effectively interconnecting said interior spaces for conduction of fluid therebetween.
Claim 3
Dependent Claim
37 words
The measuring device of claim 1 in combination with control means for sequentially causing both said first states to exist simultaneously with each other and then causing both said second states to exist simultaneously with each other.
Claim 4
Dependent Claim
76 words
The measuring device of claim 1, including a centrifugal pump, said pump having a rotor, a rotor chamber having third interior space containing said rotor, an inlet providing a passage for separately conducting fluid from said first place to the said third interior space, and an outlet for separately conducting fluid to said third place from said third interior space; said rotor being said impeller, and said first interior space including the said third interior space.
Claim 5
Dependent Claim
138 words
The measuring device of claim 1, wherein said second chamber includes a cylinder having interior space and said second means includes a piston in said cylinder''s interior space movable from one end of said cylinder to the other thereof; said one end of said cylinder having a passage connected to said first interior space for conducting fluid between said first interior space and the said interior space of said cylinder; said piston, when at said one end of said cylinder, defining substantially zero volume of said cylinder''s interior space connected to said first interior space, whereby to define said first state of said second means; and said cylinder, when at said other end of said cylinder, connecting said interior space of said cylinder to said first interior space, whereby to define said second state of said second means.
Claim 6
Dependent Claim
86 words
The measuring device of claim 4, wherein said other end of said cylinder has a piston detector for detecting the position of said piston in said cylinder with respect to said other end of said cylinder; said other end of said cylinder also having force exerting means responsive to said piston detector for exerting just so much force on said piston as is necessary to prevent said piston from moving more than a given predetermined distance from said one end; and means for measuring said force.
Claim 7
Dependent Claim
59 words
The measuring device of claim 5, wherein said force exertinG means includes means for applying fluid pressure between said other end of said cylinder and said piston for exerting said force on said piston, said piston detector being responsive to said piston to regulate said force for maintaining said piston at said given predetermined distance from said one end.
Claim 8
Dependent Claim
54 words
The measuring device of claim 1, wherein said second means includes structure of said chamber adapted in said first state of said second means to make said second interior space substantially zero volume, and adapted in said second state of said second means to make said second interior space have a predetermined, non-zero volume.
Claim 9
Dependent Claim
111 words
In a gas-content-of-liquid measuring device of the type having an interior space for containing fluid under pressure, sensing means for sensing said pressure, agitating means for agitating liquid in said interior space and sampling means for introducing a liquid sample into said interior space for agitation by said agitating means, the improvement wherein said agitatiNg and sampling means is a pump and control means for causing said pump to sample by pumping a liquid sample into said interior space and to agitate by pumping such liquid sample while same is in said interior space, and for causing the said sample to be confined in said interior space while being so agitated.
Claim 10
Dependent Claim
111 words
In a gas-content-of-liquid measuring device of the type having an interior space for containing fluid under pressure, sensing means for sensing said pressure, agitating means for agitating liquid in said interior space and sampling means for introducing a liquid sample into said interior space for agitation by said agitating means, the improvement wherein said agitatiNg and sampling means is a pump and control means for causing said pump to sample by pumping a liquid sample into said interior space and to agitate by pumping such liquid sample while same is in said interior space, and for causing the said sample to be confined in said interior space while being so agitated.
Claim 11
Dependent Claim
56 words
The invention of claim 8, wherein said pump has an exhaust and an intake, said control means having a first state wherein it connects said intake to a source of liquid, and said exhaust to said interior space, and a second state wherein it instead connects both said intake and said exhaust to said interior space.
Claim 12
Dependent Claim
12 words
The invention of claim 9, wherein said pump is a centrifugal pump.
Claim 13
Dependent Claim
54 words
The invention of claim 9, wherein said control means in said first state also connects said interior space to said source for allowing said pump to pump liquid from said source, through said interior space, and back to said source, and in said second state instead closes said interior space off from said source.
Claim 14
Dependent Claim
12 words
The invention of claim 11, wherein said pump is a centrifugal pump.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |