Patent US3672389A successfully refreshed from Google Patents.
US3672389A
Expired / Lapsed
US
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Liquid proportioning device
Assignee: Automatic Sprinkler Corp
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Filing: 1970-09-10
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Granted: 1972-06-27
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Expires: 1990-09-10
Abstract
Abstract A device for substantially continuously mixing or blending two liquids in predetermined ratios to one another, comprising a first two-way acting piston-cylinder unit connected between a source of a first of the liquids under pressure and an outlet line to a mixing tank through a spool-type rotary reversing valve and reciprocable by the first liquid under the control of the reversing valve to deliver metered volumes of the first liquid to the mixing tank, a second two-way acting piston-cylinder unit connected between a source of the second of the liquids and another outlet line to the mixing tank through one-way flow valve controlled conduits and driven for reciprocating action by the first piston-cylinder unit to deliver metered volumes of the second liquid to the mixing tank through gear means which include a pair of paralleling, slidably mounted racks connected to the piston elements of corresponding of the piston-cylinder units and a rockable or rotatable ring gear mounted between and in meshing relation with the racks. The rock axis of the ring gear is defined by a precision bearing having a worm and screw adjustment and may be infinitely varied through such adjustment to regulate the ''''throw'''' of the ring gear towards the second piston-cylinder unit for purposes of obtaining a desired relationship in the operating strokes of the two units and a consequent desired ratio or proportion in the liquids being delivered thereby into the mixing tank.
Inventors
- 👤 Alexander Mcconnell
- 👤 Fay D Bickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:49
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/13; G05D11/131; G05D11/132; B; B67; B67D; B67D1/00; B67D1/08; B67D1/10; B67D1/101; B67D1/105; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T74/00; Y10T74/19; Y10T74/19555
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
272 words
In a mechanism for blending a first liquid with a predetermined ratio of a second liquid on a substantially continuous basis and which includes a pair of two-way acting, positive displacement pump units through which the separate liquids are metered and means in association with a first of the pump units for reciprocating the same on a substantially continuous basis, means connecting the second of the pump units for reciprocating motion with the first of the pump units, comprising a first slidable rack element connected to said first pump unit and movable linearly by said first pump unit during reciprocation thereof, a second slidable rack element connected to said second pump unit and movable linearly to reciprocate said second pump unit, said first and second rack elements disposed in paralleling relation with one another and having toothed edges facing toward one another, ring gear means mounted between said first and second rack elements for transmitting by arcuate travel lineal movement of said first rack element to lineal movement of said second rack element to effect reciprocating motion of said second pump unit with reciprocating motion of said first pump unit, and means mounting said ring gear means for rotational movement on an axis whose locus is infinitely variable within fixed limits between the rack elements to enable varying of the lineal displacement of the second pump unit for any given lineal displacement of said first rack element and operating stroke of said first pump unit to obtain a desired ratio in the volumes of the first and second liquids being metered through said pump units as said first pump unit is operated.
Claim 2
Dependent Claim
272 words
In a mechanism for blending a first liquid with a predetermined ratio of a second liquid on a substantially continuous basis and which includes a pair of two-way acting, positive displacement pump units through which the separate liquids are metered and means in association with a first of the pump units for reciprocating the same on a substantially continuous basis, means connecting the second of the pump units for reciprocating motion with the first of the pump units, comprising a first slidable rack element connected to said first pump unit and movable linearly by said first pump unit during reciprocation thereof, a second slidable rack element connected to said second pump unit and movable linearly to reciprocate said second pump unit, said first and second rack elements disposed in paralleling relation with one another and having toothed edges facing toward one another, ring gear means mounted between said first and second rack elements for transmitting by arcuate travel lineal movement of said first rack element to lineal movement of said second rack element to effect reciprocating motion of said second pump unit with reciprocating motion of said first pump unit, and means mounting said ring gear means for rotational movement on an axis whose locus is infinitely variable within fixed limits between the rack elements to enable varying of the lineal displacement of the second pump unit for any given lineal displacement of said first rack element and operating stroke of said first pump unit to obtain a desired ratio in the volumes of the first and second liquids being metered through said pump units as said first pump unit is operated.
Claim 3
Dependent Claim
222 words
The construction of claim 1 wherein said ring gear means is provided with an elongate center slot extending generally perpendicularly of said rack elements and wherein the means mounting said ring gear means for rotational movement on an axis whose locus is infinitely variable within fixed limits between the racks is the nature of a worm and screw mechanism and comprises a worm having stud-like end portions and an annular, interiorily, helically threaded center portion, an elongate screw threadably received in the center portion of said worm, said worm and screw fitting within the slot of said ring gear means with the stud-like end portions of the worm extending transversely outwardly from the opposite faces of said ring gear means to define a rotational axis of said ring gear means and the screw disposed longitudinally in the slot of said ring gear means, and bearing means on the stud-like end portions of said worm for coupling said worm to said ring gear means and for releasably, fixedly holding said worm against longitudinal movement relatively of the slot of said ring gear means, said screw adapted to be rotated in said worm to effect worm displacement longitudinally of the slot of said ring gear means and corresponding displacement relatively of said ring gear means of the rotational axis defined therefor by said worm.
Claim 4
Dependent Claim
98 words
The construction of claim 2 wherein said bearing means comprises a pair of bearing plates carried one each on the stud-like end portions of said worm in bearing relation with the opposed faces of said ring gear means, a pair of pivotable support arms disposed in straddling relation to said ring gear means and having free end portions journaled to the opposed stud-like end portions of said worm axially outwardly of said bearing plates, and means for releasably retaiNing said support arms to said worm and for releasably clampingly holding said bearing plates to said ring gear means.
Claim 5
Dependent Claim
69 words
The construction of claim 2 including means for rotating said screw relatively of said worm and including a first helical gear mounted to one end of said screw, a second helical gear mounted in said ring gear means in 90* meshing relation with said first helical gear, and hand wheel means connected to said second helical gear for turning the same and the first helical gear on said screw.
Claim 6
Dependent Claim
272 words
In a mechanism for blending a first liquid with a second liquid in predetermined volumetric proportions to another and having a paralleling arrangement of 2-way acting piston-cylinder type pump units through which the liquids are metered and means associated with a first of the pump units for reciprocating the same on a substantially continuous basis to meter a constant volume of a first of the liquids therethrough in each operating stroke of such pump unit, adjustable gear means connecting the second of the pump units for reciprocating movement with the first of said pump units to meter with each volume of the first liquid being metered through said first pump unit a given volume of the second liquid, comprising a pair of rack elements connected to corresponding of the pump units, means supporting said rack elements for slide movement in a fixed common plane with one another, rotatable ring gear means mounted between said rack elements and in the common plane thereof for transmitting slide movement of the rack element connected to said first pump unit to the rack element connected to the second pump unit to cause the two pump units to reciprocate in correlated fashion to one another, and means for varying the rotational axis of said ring gear means to provide with a given operating stroke of the first pump unit and a corresponding given slide movement of the rack element associated therewith a lineal movement in the rack element associated with said second pump unit and an operating stroke in the latter as will provide the desired volumetric relation in the liquids being metered through the pump units.
Claim 7
Dependent Claim
272 words
In a mechanism for blending a first liquid with a second liquid in predetermined volumetric proportions to another and having a paralleling arrangement of 2-way acting piston-cylinder type pump units through which the liquids are metered and means associated with a first of the pump units for reciprocating the same on a substantially continuous basis to meter a constant volume of a first of the liquids therethrough in each operating stroke of such pump unit, adjustable gear means connecting the second of the pump units for reciprocating movement with the first of said pump units to meter with each volume of the first liquid being metered through said first pump unit a given volume of the second liquid, comprising a pair of rack elements connected to corresponding of the pump units, means supporting said rack elements for slide movement in a fixed common plane with one another, rotatable ring gear means mounted between said rack elements and in the common plane thereof for transmitting slide movement of the rack element connected to said first pump unit to the rack element connected to the second pump unit to cause the two pump units to reciprocate in correlated fashion to one another, and means for varying the rotational axis of said ring gear means to provide with a given operating stroke of the first pump unit and a corresponding given slide movement of the rack element associated therewith a lineal movement in the rack element associated with said second pump unit and an operating stroke in the latter as will provide the desired volumetric relation in the liquids being metered through the pump units.
Claim 8
Dependent Claim
253 words
The construction of claim 5 wherein the ring gear means is provided with an elongate slot extending generally perpendicularly of the rack elements and wherein said means for varying the rotational axis of said ring gear means is in the nature of a worm and screw mechanism which comprises, a stud-like worm element disposed transversely in the slot of said ring gear means and formed with a center, interiorly threaded, annular worm portion, an elongate screw element threadably received in the center worm portion of said worm element and extending longitudinally of the slot of said ring gear means, a pair of rectangular bearing plates located in bearing relation on the opposed faces of said ring gear means and in co-axial relation with the opposed end portions of said worm element, a pair of support arms disposed in straddling relation with said ring gear means and having fixedly pivotally mounted outer end portions and free inner end portions having a journaled connection to the opposed end portions of said worm element axially outwardly of said bearing plates and means on the opposed end portions of said worm element for retaining the inner end portions of said support arms to said worm element and for releasably clampingly maintaining said bearing plates in bearing relationship with the opposed faces of said ring gear means and with the inner end portions of said support arms so as to confine the ring gear means for rotational movement on an axis coincident with that of said worm element.
Claim 9
Dependent Claim
96 words
The construction of claim 6 including a first helical gear mounted to one end of said screw element, a second helical gear rotatably mounted in said ring gear means in 90* meshing relation with said first helical gear, and a manually operable turn wheel connected with said second helical gear for effecting rotation of the screw element relatively oF the worm element for effecting adjustment of the locus of the rotational axis of said ring gear means in said slot and corresponding adjustments in the volumetric proportions between the liquids being metered through the pump units.
Claim 10
Dependent Claim
272 words
In a mechanism for mixing two liquids in a selected one of a range of different volumetric proportions to one another and having a pair of two-way acting, positive displacement pump units for pumping metered volumes of respective ones of the two liquids into a mixing tank, a first of said pump units connected to a high pressure source of one of the two liquids and said mixing tank through a reversing valve designed to automatically reverse liquid flow into and from the ends of said first pump unit responsive to each operating stroke of the first pump unit and a second of the pump units connected to a source of the other of the two liquids and to said mixing tank through check valve controlled inlet and outlet lines, gear means coupling said second unit for reciprocating movement with said first pump unit, comprising a pair of opposed and facing, linearly movable rack elements connected one to the first pump unit and one to the second unit, ring gear means rotatably mounted between said rack elements for transmitting linear movement of the rack element connected to said first pump unit to the rack element connected to said second pump unit to reciprocate said second pump unit as said first pump unit is reciprocated, and means for varying the rotational axis of said ring gear means between said rack elements to obtain the relationship between the strokes of the two pump units and the resultant liquid volumes being delivered thereby into said mixing tank as will provide the selected one of the volumetric proportions desired between the liquids in the mixing tank.
Claim 11
Dependent Claim
272 words
In a mechanism for mixing two liquids in a selected one of a range of different volumetric proportions to one another and having a pair of two-way acting, positive displacement pump units for pumping metered volumes of respective ones of the two liquids into a mixing tank, a first of said pump units connected to a high pressure source of one of the two liquids and said mixing tank through a reversing valve designed to automatically reverse liquid flow into and from the ends of said first pump unit responsive to each operating stroke of the first pump unit and a second of the pump units connected to a source of the other of the two liquids and to said mixing tank through check valve controlled inlet and outlet lines, gear means coupling said second unit for reciprocating movement with said first pump unit, comprising a pair of opposed and facing, linearly movable rack elements connected one to the first pump unit and one to the second unit, ring gear means rotatably mounted between said rack elements for transmitting linear movement of the rack element connected to said first pump unit to the rack element connected to said second pump unit to reciprocate said second pump unit as said first pump unit is reciprocated, and means for varying the rotational axis of said ring gear means between said rack elements to obtain the relationship between the strokes of the two pump units and the resultant liquid volumes being delivered thereby into said mixing tank as will provide the selected one of the volumetric proportions desired between the liquids in the mixing tank.
Claim 12
Dependent Claim
261 words
In a mechanism for blending two liquids in predetermined ratios to one another and which includes a pair of 2-way acting positive displacement pump units through which the separate liquids are pumped in metered volumes and means associated with a first such pump unit for driving the same for reciprocatory movement, means connecting the second of the pump units for reciprocatory movement with the first pump unit, comprising a pair of generally parallel extending, linearly movable rack elements having toothed portions in facing relation to one another and connected one to each of the pump units, said elements movable linearly in direct proportion to the displacement of its respective pump unit, rockable means intermediate said pair of rack elements and operatively coupled thereto for transmitting linear movement of the rack element connected to said first pump unit to the rack element connected to said second pump unit, said rockable means including a ring gear mounted between and in meshing engagement with said rack elements, and means mounting said rockable means for rocking motion on an axis, the locus of which is infinitely variable within fixed limits between the rack elements to permit the linear movement of the rack element connected to said second pump unit to be varied relatively of the linear movement of the rack element connected to said first pump unit for obtaining a desired relationship in the operating strokes of the two units and a corresponding desired ratio in the volumes of the liquids being metered through the units as the first of the pump units is reciprocated.
Claim 13
Dependent Claim
261 words
In a mechanism for blending two liquids in predetermined ratios to one another and which includes a pair of 2-way acting positive displacement pump units through which the separate liquids are pumped in metered volumes and means associated with a first such pump unit for driving the same for reciprocatory movement, means connecting the second of the pump units for reciprocatory movement with the first pump unit, comprising a pair of generally parallel extending, linearly movable rack elements having toothed portions in facing relation to one another and connected one to each of the pump units, said elements movable linearly in direct proportion to the displacement of its respective pump unit, rockable means intermediate said pair of rack elements and operatively coupled thereto for transmitting linear movement of the rack element connected to said first pump unit to the rack element connected to said second pump unit, said rockable means including a ring gear mounted between and in meshing engagement with said rack elements, and means mounting said rockable means for rocking motion on an axis, the locus of which is infinitely variable within fixed limits between the rack elements to permit the linear movement of the rack element connected to said second pump unit to be varied relatively of the linear movement of the rack element connected to said first pump unit for obtaining a desired relationship in the operating strokes of the two units and a corresponding desired ratio in the volumes of the liquids being metered through the units as the first of the pump units is reciprocated.
Claim 14
Dependent Claim
62 words
The construction of claim 9 wherein the ring gear is provided with an elongate, center slot and wherein the means mounting said rockable means for rocking movement on an axis whose locus is infinitely variable within fixed limits comprises a worm element fixedly, rotationally mounted in the slot of said ring gear and a screw element rotatably mounted in said worm element.
Claim 15
Dependent Claim
53 words
The construction of claim 10 including means for manually rotating said screw element and comprising a pair of meshing bevel gears, one of which is carried on the screw element and the other of which is carried in the rIng gear on a shaft to which is mounted a large diameter turn wheel.
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) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |