US4178240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid handling system
Assignee: Bank of America NA
•
Filing: 1976-05-17
•
Granted: 1979-12-11
•
Expires: 1996-05-17
Abstract
Abstract A system for handling two liquid streams comprises an hydraulic circuit including a pair of receptacles each provided with movable partition means dividing it into first and second chambers. Rod means extending through a first chamber of each receptacle connects the partition means and is effective to cause reciprocation of one partition means to be repeated by the other so that as the first chamber of one receptacle is expanded, the first chamber of the other receptacle is contracted. A quantity of the first liquid is delivered alternately to the first and second chambers of one receptacle as those chambers expand. As those chambers contract first liquid is passed through conduit means from the first and second chambers of said one receptacle to the first and second chambers, respectively, of said other receptacle. A source of second liquid is connected to said conduit means and liquid removal means is connected to said circuit to remove liquid from said circuit in quantities equal to the quantity of second liquid admitted to the circuit.
Inventors
- 👤 Harry E. Pinkerton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/16; A61M1/1621; A61M1/1635; A61M1/1639; A61M1/1641; B; B01; B01D; B01D61/00; B01D61/02; B01D61/12; B01D61/24; B01D61/32; Y; Y10; Y10S; Y10S210/00; Y10S210/929; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
132 words
Apparatus for handling two liquids comprising a filled hydraulic system having a first receptacle and a second receptacle, reciprocable partition means in each of said receptacles dividing each receptacle into a first chamber and a second chamber, means causing reciprocation of said partition means alternately to expand and to contract said chambers, means ganging said partition means, means delivering first liquid to said chambers of said one receptacle alternately as each said chamber expands, conduit means transferring said first liquid to a chamber of equal volume in said second receptacle as each said chamber of said first receptacle contracts, inlet means for a second liquid in said conduit means and liquid removal means removing liquid from said system in quantities equal to the quantity of said second liquid admitted to said system.
Claim 2
Dependent Claim
132 words
Apparatus for handling two liquids comprising a filled hydraulic system having a first receptacle and a second receptacle, reciprocable partition means in each of said receptacles dividing each receptacle into a first chamber and a second chamber, means causing reciprocation of said partition means alternately to expand and to contract said chambers, means ganging said partition means, means delivering first liquid to said chambers of said one receptacle alternately as each said chamber expands, conduit means transferring said first liquid to a chamber of equal volume in said second receptacle as each said chamber of said first receptacle contracts, inlet means for a second liquid in said conduit means and liquid removal means removing liquid from said system in quantities equal to the quantity of said second liquid admitted to said system.
Claim 3
Dependent Claim
16 words
Apparatus as claimed in claim 1 wherein said means ganging said partition means comprises rod means.
Claim 4
Dependent Claim
21 words
Apparatus as claimed in claim 1 wherein said receptacles comprise cylinders and said partition means comprise a piston in each cylinder.
Claim 5
Dependent Claim
28 words
Apparatus as claimed in claim 3 wherein said cylinders are disposed in end to end coaxial relationship and said means ganging said pistons comprises a common piston rod.
Claim 6
Dependent Claim
15 words
Apparatus as claimed in claim 1 wherein said reciprocable partition means comprises flexible diaphragm means.
Claim 7
Dependent Claim
24 words
Apparatus as claimed in claim 5 wherein said flexible diaphragm means are connected by a rod extending through first chambers of each said receptacle.
Claim 8
Dependent Claim
22 words
Apparatus as claimed in claim 1 wherein the volumes swept in said first chambers equal the volumes swept in said second chambers.
Claim 9
Dependent Claim
23 words
Apparatus as claimed in claim 1 wherein said inlet means for a second liquid is constituted by a membrane of a dialyzer cell.
Claim 10
Dependent Claim
19 words
Apparatus as claimed in claim 8 wherein said fluid removal means comprises an outlet opening from said conduit means.
Claim 11
Dependent Claim
16 words
Apparatus as claimed in claim 9 wherein said outlet opening is controlled by a check valve.
Claim 12
Dependent Claim
14 words
Apparatus as claimed in claim 9 wherein said removal means includes a metering pump.
Claim 13
Dependent Claim
14 words
Apparatus as claimed in claim 10 wherein said removal means includes a metering pump.
Claim 14
Dependent Claim
14 words
Apparatus as claimed in claim 1 wherein said removal means comprises a metering pump.
Claim 15
Independent Claim
158 words
A method of handling liquids in an hydraulic system comprising a first receptacle and a second receptacle, partition means in each receptacle dividing the receptacles into first and second chambers, which method comprises reciprocating said partition means in said receptacles to cause, during reciprocation of said partition means, equal volumes of each first chamber to be swept by said partition means and equal volumes of each second chamber to be swept by said partition means, admitting first liquid alternately to each chamber of said first receptacle as it expands, transferring said first liquid from each said chamber of said first receptacle as it contracts, alternately to an expanding chamber of equal volume in said second receptacle, establishing a second liquid connection to said system and extracting from said system a quantity of said transferred liquid to induce quantities of said second liquid, equal to said extracted quantities, to be admitted to said expanding chamber of said second receptacle.
Claim 16
Independent Claim
158 words
A method of handling liquids in an hydraulic system comprising a first receptacle and a second receptacle, partition means in each receptacle dividing the receptacles into first and second chambers, which method comprises reciprocating said partition means in said receptacles to cause, during reciprocation of said partition means, equal volumes of each first chamber to be swept by said partition means and equal volumes of each second chamber to be swept by said partition means, admitting first liquid alternately to each chamber of said first receptacle as it expands, transferring said first liquid from each said chamber of said first receptacle as it contracts, alternately to an expanding chamber of equal volume in said second receptacle, establishing a second liquid connection to said system and extracting from said system a quantity of said transferred liquid to induce quantities of said second liquid, equal to said extracted quantities, to be admitted to said expanding chamber of said second receptacle.
Claim 17
Dependent Claim
25 words
The method as claimed in claim 14 wherein volumes of said second chamber equal to volumes in said first chambers are caused to be swept.
Claim 18
Dependent Claim
193 words
A hemodialysis procedure utilizing a hydraulic system comprising a first and a second receptacle, and partition means in each receptacle dividing the receptacles into first and second chambers which procedure comprises connecting a patient to the blood side of a dialysis cell having blood and dialysate solution sides, reciprocating said partition means in said receptacles to cause, during reciprocation of said partition means, equal volumes of each first chamber to be swept by said partition means and equal volumes of each second chamber to be swept by said partition means, admitting a dialysate solution alternately to each chamber of said first receptacle as it expands, transferring said solution through the dialysate side of the dialysis cell from each said chamber of said first receptacle as it contracts, alternately to an expanding chamber of equal volume in said second receptacle whereby blood wastes migrate across the membrane from the blood side to the dialysate side of said cell, providing an outlet from said circuit whereby the egress of liquid from the circuit in direct volumetric relationship to the quantity of blood wastes crossing said membrane will occur through said outlet, and measuring that egress.
Claim 19
Dependent Claim
193 words
A hemodialysis procedure utilizing a hydraulic system comprising a first and a second receptacle, and partition means in each receptacle dividing the receptacles into first and second chambers which procedure comprises connecting a patient to the blood side of a dialysis cell having blood and dialysate solution sides, reciprocating said partition means in said receptacles to cause, during reciprocation of said partition means, equal volumes of each first chamber to be swept by said partition means and equal volumes of each second chamber to be swept by said partition means, admitting a dialysate solution alternately to each chamber of said first receptacle as it expands, transferring said solution through the dialysate side of the dialysis cell from each said chamber of said first receptacle as it contracts, alternately to an expanding chamber of equal volume in said second receptacle whereby blood wastes migrate across the membrane from the blood side to the dialysate side of said cell, providing an outlet from said circuit whereby the egress of liquid from the circuit in direct volumetric relationship to the quantity of blood wastes crossing said membrane will occur through said outlet, and measuring that egress.
References Cited (Backward Citations)
US3530873A
Cited
US3791768A
Cited
US3979284A
Cited
US4021341A
Cited
US3976574A
Cited
US4093545A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |