Patent US3540781A successfully refreshed from Google Patents.
Patent US4037616A successfully refreshed from Google Patents.
US4037616A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Proportioning fluids
Assignee: Individual
•
Filing: 1976-05-12
•
Granted: 1977-07-26
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Expires: 1996-05-12
Abstract
Abstract Apparatus for accurately proportioning and mixing fluids comprising a double acting piston/cylinder unit of which the cylinder is divided into two chambers by the piston and the volume of the cylinder swept by the piston at one end of the piston is lesser than that at the other end. An inlet connection for a first fluid is made to one chamber, a conduit connects the two chambers and includes a connection to a source of the second fluid. Valve means are associated with the conduits and are effective to cause a charge of first fluid to be delivered to said one chamber and thereafter to be transferred to the other chamber drawing fluid from said source of second fluid to make up for the difference in the volumes of the chambers. Said valve means then cooperate to cause the mixed fluids to be discharged from the other chamber as said one chamber is again charged with said first fluid. In a variant of the invention the piston/cylinder unit is replaced by a receptacle within which is disposed a diaphragm the diaphragm serving to divide the receptacle into two chambers.
Inventors
- 👤 Harry Pinkerton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:32
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/14; A61M1/16; A61M1/1654; A61M1/1656; A61M1/1668; B; B01; B01F; B01F35/00; B01F35/80; B01F35/88; B01F35/882; B01F35/8822; B01F35/88222; G; G05; G05D; G05D11/00; Y; Y10; Y10S; Y10S210/00; Y10S210/929; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 49
Claim 1
Independent Claim
231 words
Apparatus for proportioning and mixing two substantially incompressible fluids comprising an hydraulic circuit including a cylinder, a piston reciprocable in said cylinder and dividing the cylinder into two chambers, means reducing the effective volume swept by said piston in one chamber to be lesser than that swept by said piston in the other chamber, first conduit means constituting an inlet for a first fluid to said one chamber and connectable to a source of said first fluid, second conduit means connecting said one chamber to said other chamber, third conduit means connected to said other chamber and constituting an outlet for mixed fluids, fourth conduit means constituting an inlet for a second fluid and connectable between a source of a second fluid and said second conduit means to cause said second fluid to be added to said first fluid in said second conduit means in an amount directly related to the differences in effective volumes swept by said piston, and interconnected valve means cooperating in said conduit means to permit controlled reciprocation of said piston in said cylinder, said source of said second fluid being different from said source of said first fluid and said valve means constituting means isolating said source of second fluid from both said chambers as said one chamber expands and connecting said source of said first fluid to said one chamber as said one chamber expands.
Claim 2
Dependent Claim
231 words
Apparatus for proportioning and mixing two substantially incompressible fluids comprising an hydraulic circuit including a cylinder, a piston reciprocable in said cylinder and dividing the cylinder into two chambers, means reducing the effective volume swept by said piston in one chamber to be lesser than that swept by said piston in the other chamber, first conduit means constituting an inlet for a first fluid to said one chamber and connectable to a source of said first fluid, second conduit means connecting said one chamber to said other chamber, third conduit means connected to said other chamber and constituting an outlet for mixed fluids, fourth conduit means constituting an inlet for a second fluid and connectable between a source of a second fluid and said second conduit means to cause said second fluid to be added to said first fluid in said second conduit means in an amount directly related to the differences in effective volumes swept by said piston, and interconnected valve means cooperating in said conduit means to permit controlled reciprocation of said piston in said cylinder, said source of said second fluid being different from said source of said first fluid and said valve means constituting means isolating said source of second fluid from both said chambers as said one chamber expands and connecting said source of said first fluid to said one chamber as said one chamber expands.
Claim 3
Dependent Claim
34 words
Apparatus as claimed in claim 1 wherein said means reducing the effective volume swept by said piston in said one chamber comprises a piston rod extending from the piston and through said one chamber.
Claim 4
Dependent Claim
34 words
Apparatus as claimed in claim 1 wherein said source of said first fluid is pressurized, said first fluid constituting a motive fluid for driving said piston in a direction to expand said one chamber.
Claim 5
Dependent Claim
16 words
Apparatus as claimed in claim 3 wherein said source of said first fluid includes a pump.
Claim 6
Dependent Claim
50 words
Apparatus as claimed in claim 4 wherein said source of said first fluid includes a regulating valve constituting means establishing the velocity of said piston movement in a direction to expand said one chamber and wherein said valve is disposed between said pump and the inlet to said one chamber.
Claim 7
Dependent Claim
34 words
Apparatus as claimed in claim 3 wherein said source of said first fluid includes a regulating valve constituting means establishing the velocity of said piston movement in a direction to expand said one chamber.
Claim 8
Dependent Claim
23 words
Apparatus as claimed in claim 3 wherein resilient means are provided to move said piston in a direction to expand said other chamber.
Claim 9
Dependent Claim
30 words
Apparatus as claimed in claim 7 wherein a regulating valve is provided to constitute means establishing the velocity of said piston movement in a direction to expand said other chamber.
Claim 10
Dependent Claim
17 words
Apparatus as claimed in claim 8 wherein said regulating valve is disposed in said second conduit means.
Claim 11
Dependent Claim
31 words
Apparatus as claimed in claim 1 wherein a flow meter is disposed in one of said conduit means said flow meter being graduated to indicate the flows of both said fluids.
Claim 12
Dependent Claim
21 words
Apparatus as claimed in claim 10 wherein said flow meter is disposed in one of said second and third conduit means.
Claim 13
Dependent Claim
48 words
Apparatus as claimed in claim 10 wherein said second and said third conduit means include a common connection to said other chamber, said common connection including valve means establishing communication alternatively between said second conduit and said other chamber and between said third conduit and said other chamber.
Claim 14
Dependent Claim
20 words
Apparatus as claimed in claim 10 comprising counter means counting the number of times said piston reciprocates within said cylinder.
Claim 15
Dependent Claim
46 words
Apparatus as claimed in claim 1 wherein said first and second conduit means include a common connection to said one chamber, said common connection including valve means establishing communication alternatively between said first conduit and said one chamber and said second conduit and said one chamber.
Claim 16
Dependent Claim
48 words
Apparatus as claimed in claim 1 wherein said second and said third conduit means include a common connection to said other chamber, said common connection including valve means establishing communication alternatively between said second conduit and said other chamber and between said third conduit and said other chamber.
Claim 17
Dependent Claim
75 words
Apparatus as claimed in claim 1 including two axially aligned cylinders, each with a piston and each divided into two chambers, said pistons being interconnected by a piston rod constituting means reducing the effective volume swept by said pistons within the chambers in which said rod is disposed to be lesser than that of the other chambers, the lesser volume chamber of one cylinder expanding as the greater volume chamber of the other cylinder expands.
Claim 18
Dependent Claim
26 words
Apparatus as claimed in claim 16 wherein said source of said first fluid is pressurized, said first fluid constituting a motive fluid for driving said pistons.
Claim 19
Dependent Claim
16 words
Apparatus as claimed in claim 17 wherein said source of said first fluid includes a pump.
Claim 20
Dependent Claim
25 words
Apparatus as claimed in claim 18 wherein said source of said first fluid includes a regulating valve constituting means establishing the velocity of piston movement.
Claim 21
Dependent Claim
27 words
Apparatus as claimed in claim 17 wherein said source of said first fluid includes a regulating valve constituting means establishing the velocity at which said pistons move.
Claim 22
Dependent Claim
30 words
Apparatus as claimed in claim 16 wherein a flow meter is disposed in one of said conduit means, said flow meter being graduated to indicate flows of both said fluids.
Claim 23
Dependent Claim
20 words
Apparatus as claimed in claim 21 comprising counter means counting the number of times said pistons reciprocate within said cylinders.
Claim 24
Dependent Claim
20 words
Apparatus as claimed in claim 16 comprising counter means counting the number of times said pistons reciprocate within said cylinders.
Claim 25
Dependent Claim
20 words
Apparatus as claimed in claim 1 comprising counter means counting the number of times said piston reciprocates within said cylinder.
Claim 26
Dependent Claim
45 words
Apparatus as claimed in claim 1 wherein pump means is provided operable to render the pressure in said third conduit means lesser than that in said first conduit means, said pump means constituting means moving said piston in a direction to expand said one chamber.
Claim 27
Dependent Claim
17 words
Apparatus as claimed in claim 25 wherein said pump means is disposed in said first conduit means.
Claim 28
Dependent Claim
181 words
Apparatus for proportioning and mixing two fluids comprising an hydraulic circuit including a cylinder, a piston reciprocable in said cylinder and dividing the cylinder into two chambers, means reducing the effective volume swept by said piston in one chamber to be lesser than that swept by said piston in the other chamber, first conduit means constituting an inlet for a first fluid to said one chamber and connectable to a source of said first fluid, second conduit means connecting said one chamber to said other chamber, third conduit means connected to said other chamber and constituting an outlet for mixed fluids, fourth conduit means constituting an inlet for a second fluid and connectable between a source of a second fluid and said circuit to cause said second fluid to be added to the circuit in an amount directly related to the difference in effective volumes swept by said pistons and interconnected valve means cooperating in said conduit means to permit controlled reciprocation of said piston in said cylinder, wherein said inlet for said second fluid communicates directly with said one chamber.
Claim 29
Dependent Claim
181 words
Apparatus for proportioning and mixing two fluids comprising an hydraulic circuit including a cylinder, a piston reciprocable in said cylinder and dividing the cylinder into two chambers, means reducing the effective volume swept by said piston in one chamber to be lesser than that swept by said piston in the other chamber, first conduit means constituting an inlet for a first fluid to said one chamber and connectable to a source of said first fluid, second conduit means connecting said one chamber to said other chamber, third conduit means connected to said other chamber and constituting an outlet for mixed fluids, fourth conduit means constituting an inlet for a second fluid and connectable between a source of a second fluid and said circuit to cause said second fluid to be added to the circuit in an amount directly related to the difference in effective volumes swept by said pistons and interconnected valve means cooperating in said conduit means to permit controlled reciprocation of said piston in said cylinder, wherein said inlet for said second fluid communicates directly with said one chamber.
Claim 30
Dependent Claim
208 words
Apparatus for proportioning and mixing two liquids comprising an hydraulic circuit including a receptable, movable partition means within said receptacle dividing that receptacle into two chambers, means for producing reciprocation of said partition means within said receptacle alternately to expand and contract said chambers, a first liquid inlet to one of said chambers, conduit means connecting said one chamber and the other of said chambers, a second liquid inlet extending from a source of second liquid different than said first liquid to said conduit means and the liquid outlet from said other chamber, valve means associated with said first liquid inlet, said outlet and said conduit means and operable to permit controlled reciprocation of said partition means, and means effective to render the volume of first liquid delivered to said one chamber lesser than that volume required to fix the other chamber upon expansion of said other chamber whereby second liquid is induced into said other chamber through said conduit means in a volume equal to the difference in said aforementioned volumes, said valve means being effective to isolate said chambers from the source of second liquid as said one chamber expands and to connect said first liquid inlet to said one chamber as said one chamber expands
Claim 31
Dependent Claim
208 words
Apparatus for proportioning and mixing two liquids comprising an hydraulic circuit including a receptable, movable partition means within said receptacle dividing that receptacle into two chambers, means for producing reciprocation of said partition means within said receptacle alternately to expand and contract said chambers, a first liquid inlet to one of said chambers, conduit means connecting said one chamber and the other of said chambers, a second liquid inlet extending from a source of second liquid different than said first liquid to said conduit means and the liquid outlet from said other chamber, valve means associated with said first liquid inlet, said outlet and said conduit means and operable to permit controlled reciprocation of said partition means, and means effective to render the volume of first liquid delivered to said one chamber lesser than that volume required to fix the other chamber upon expansion of said other chamber whereby second liquid is induced into said other chamber through said conduit means in a volume equal to the difference in said aforementioned volumes, said valve means being effective to isolate said chambers from the source of second liquid as said one chamber expands and to connect said first liquid inlet to said one chamber as said one chamber expands
Claim 32
Dependent Claim
56 words
Apparatus as claimed in claim 28 wherein said partition means comprises a flexible diaphragm element and said means rendering the volume of first liquid delivered to said one chamber lesser than that volume required to fill the other chamber comprises rod means secured to said diaphragm element and projecting to the exterior of said one chamber.
Claim 33
Dependent Claim
48 words
Apparatus as claimed in claim 29 wherein rod means is secured to said diaphragm element and projects through said other chamber to the exterior of the receptacle, said rod means in said one chamber being of greater cross sectional area than said rod means in said other chamber.
Claim 34
Dependent Claim
18 words
Apparatus as claimed in claim 28 including means effective to adjust the difference in volumes of said chambers.
Claim 35
Dependent Claim
45 words
Apparatus as claimed in claim 31 wherein said means for adjusting the difference in volume of said chambers comprises a piston and cylinder element communicating with one of said chambers and adjustable stop means effective to limit the movement of said piston within said cylinder.
Claim 36
Dependent Claim
83 words
Apparatus as claimed in claim 28 wherein there are provided two such receptacles each with movable partition means dividing each receptacle into two chambers and wherein said means rendering the volume of first fluid delivered to said one chamber lesser than that volume required to fill the other chamber comprises rod means secured to each said partition means and means connecting said partition means to cause said one chamber of one receptacle to expand as said one chamber of the other receptacle contracts.
Claim 37
Dependent Claim
75 words
Apparatus as claimed in claim 33 having a yoke comprising a pair of connected idler rod means, each of said idler rod means being disposed for sliding movement in an associated one of said second chambers and having distal end portions for abutting engagement with said partition means, and connecting means joining said idler rod means, said connecting means being adjustable to change the spacing between said distal end portions of said idler rod means.
Claim 38
Dependent Claim
18 words
Apparatus as claimed in claim 28 wherein said partition means comprises a flexible diaphragm element in each receptable.
Claim 39
Dependent Claim
92 words
Liquid proportioning and mixing apparatus comprising a liquid filled system including a first receiving chamber receiving a predetermined volume of a primary liquid, a second receiving chamber, means connecting said chambers, means transporting liquid from said first chamber to said second chamber through said connecting means, inlet means for a secondary liquid communicating with said connecting means and means rendering the volume of said second chamber greater than said predetermined volume of primary liquid, whereby secondary liquid is delivered through said connecting means to fill, with said primary liquid, said second chamber.
Claim 40
Dependent Claim
92 words
Liquid proportioning and mixing apparatus comprising a liquid filled system including a first receiving chamber receiving a predetermined volume of a primary liquid, a second receiving chamber, means connecting said chambers, means transporting liquid from said first chamber to said second chamber through said connecting means, inlet means for a secondary liquid communicating with said connecting means and means rendering the volume of said second chamber greater than said predetermined volume of primary liquid, whereby secondary liquid is delivered through said connecting means to fill, with said primary liquid, said second chamber.
Claim 41
Dependent Claim
30 words
Apparatus as claimed in claim 36 wherein said first receiving chamber and said second receiving chamber are defined within a common receptacle, said chambers being separated by movable partition means.
Claim 42
Dependent Claim
16 words
Apparatus as claimed in claim 37 wherein said movable partition means comprises a flexible diaphragm element.
Claim 43
Dependent Claim
19 words
Apparatus as claimed in claim 37 wherein said receptacle comprises a cylinder and said partition means comprises a piston.
Claim 44
Dependent Claim
45 words
Apparatus as claimed in claim 37 wherein said means rendering the volume of said second chamber greater than said predetermined volume of said primary liquid comprises rod means secured to said partition means and projecting through said first receiving chamber and to the exterior thereof.
Claim 45
Dependent Claim
69 words
Apparatus as claimed in claim 40 wherein there is provided second rod means slidably disposed in said other chamber and extending from the interior to the exterior thereof and adjustable stop means limiting movement of second rod means towards said one chamber, said second rod means and said stop means being constituted as means effective to adjust the difference in volumes swept by said partition means in said chambers.
Claim 46
Dependent Claim
26 words
Apparatus as claimed in claim 36 wherein said means rendering the volume of said second chamber greater than said predetermined volume of primary liquid is adjustable.
Claim 47
Dependent Claim
39 words
Apparatus as claimed in claim 36 wherein a fluid connection to said first of said chambers is made, said connection leading to a piston/cylinder element and adjustable stop means effective to limit movement of said piston within said cylinder.
Claim 48
Dependent Claim
114 words
Liquid proportioning and mixing apparatus comprising a source of a primary liquid and a filled system including a first receiving chamber receiving a predetermined volume of a primary liquid from said source, a second receiving chamber, means connecting said chambers, means transporting liquid from said first chamber to said second chamber through said connecting means, a source of secondary liquid, connecting means extending between said secondary source and said means connecting said chambers and means rendering the volume of said second chamber greater than said predetermined volume of primary liquid, whereby secondary liquid is delivered through said connecting means and said means connecting said chambers, to fill, with said primary liquid, said second chamber.
Claim 49
Dependent Claim
114 words
Liquid proportioning and mixing apparatus comprising a source of a primary liquid and a filled system including a first receiving chamber receiving a predetermined volume of a primary liquid from said source, a second receiving chamber, means connecting said chambers, means transporting liquid from said first chamber to said second chamber through said connecting means, a source of secondary liquid, connecting means extending between said secondary source and said means connecting said chambers and means rendering the volume of said second chamber greater than said predetermined volume of primary liquid, whereby secondary liquid is delivered through said connecting means and said means connecting said chambers, to fill, with said primary liquid, said second chamber.
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) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |