Patent US4004602A successfully refreshed from Google Patents.
US4004602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-metering dual proportioner
Assignee: Individual
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Filing: 1973-06-11
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Granted: 1977-01-25
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Expires: 1993-06-11
Abstract
Abstract There is here disclosed an apparatus for proportioning and blending a metered quantity of a first fluid, which provides the pumping power, with second fluids, the apparatus including an hydraulic motor, slave pump means having tandem pistons, and dual check valve assemblies associated with the slave pistons.
Inventors
- 👤 Nat Cordis, deceased
- 👤 executrix by Gladys S. Cordis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:39
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/03; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
330 words
A unitary self-metering multifluid proportioning apparatus comprising constant displacement hydraulic motor means including a housing having first and second end walls; master piston means operating within said housing; a connecting rod carried by the master piston means and passing through the first end wall of the housing; constant displacement slave pump means carried by said second end wall and including a tubular pump cylinder mounted in the said second end wall; a slave plunger axially aligned with said master piston means and operating within said tubular pump cylinder; said slave plunger means being in driven association with said connecting rod; a water supply inlet and delivery conduit means connected to said housing; a water gating assembly on said housing interposed said water supply inlet and said motor means gating water to alternate sides of said master piston means operating within said housing; spring loaded lever means mounted on said water gating assembly and linked to a reversing rod; linkage means between the connecting rod and the said reversing rod whereby the reversing rod and the slave plunger follow the reversible motion of the master piston means; a flow control within said water gating assembly shifted by said spring loaded lever means; and slave pump check valve assembly means supported by the said second end wall and containing an inlet connection, and an outlet conduit means, said outlet conduit means discharging additive fluid directly into said delivery conduit means; and wherein said slave pump check valve assembly comprises a valve means carrying a plug on its upstream side and a self-centering, flow-through, double-coned coil spring on its downstream side, said double-coned spring having tapered end portions and an intermediate enlarged portion of maximum coil girth, and a ported bridge wall across the flow path through said slave pump check valve, a tapered recess on the upstream side of said bridge wall and terminating in a port therein, said tapered recess receiving and aligning the downstream cone end of said coil spring.
Claim 2
Dependent Claim
330 words
A unitary self-metering multifluid proportioning apparatus comprising constant displacement hydraulic motor means including a housing having first and second end walls; master piston means operating within said housing; a connecting rod carried by the master piston means and passing through the first end wall of the housing; constant displacement slave pump means carried by said second end wall and including a tubular pump cylinder mounted in the said second end wall; a slave plunger axially aligned with said master piston means and operating within said tubular pump cylinder; said slave plunger means being in driven association with said connecting rod; a water supply inlet and delivery conduit means connected to said housing; a water gating assembly on said housing interposed said water supply inlet and said motor means gating water to alternate sides of said master piston means operating within said housing; spring loaded lever means mounted on said water gating assembly and linked to a reversing rod; linkage means between the connecting rod and the said reversing rod whereby the reversing rod and the slave plunger follow the reversible motion of the master piston means; a flow control within said water gating assembly shifted by said spring loaded lever means; and slave pump check valve assembly means supported by the said second end wall and containing an inlet connection, and an outlet conduit means, said outlet conduit means discharging additive fluid directly into said delivery conduit means; and wherein said slave pump check valve assembly comprises a valve means carrying a plug on its upstream side and a self-centering, flow-through, double-coned coil spring on its downstream side, said double-coned spring having tapered end portions and an intermediate enlarged portion of maximum coil girth, and a ported bridge wall across the flow path through said slave pump check valve, a tapered recess on the upstream side of said bridge wall and terminating in a port therein, said tapered recess receiving and aligning the downstream cone end of said coil spring.
Claim 3
Dependent Claim
303 words
A unitary self-metering multifluid proportioning apparatus comprising constant displacement hydraulic motor means including a housing having first and second end walls; master piston means operating within said housing; a connecting rod carried by the master piston means and passing through the first end wall of the housing; constant displacement slave pump means carried by said second end wall and including a tubular pump cylinder mounted in the said second end wall; a slave plunger axially aligned with said master piston means and operating within said tubular pump cylinder; said slave plunger means being in driven association with said connecting rod; a water supply inlet and delivery conduit means connected to said housing; a water gating assembly on said housing interposed said water supply inlet and said motor means gating water to alternate sides of said master piston means operating within said housing; spring loaded lever means mounted on said water gating assembly and linked to a reversing rod; linkage means between the connecting rod and the said reversing rod whereby the reversing rod and the slave plunger follow the reversible motion of the master piston means; a flow control within said water gating assembly shifted by said spring loaded lever means; slave pump check valve assembly means supported by the said second end wall and containing an inlet connection; outlet conduit means, said outlet conduit means discharging additive fluid directly into said delivery conduit means; said tubular pump cylinder extending axially within said housing from said second end wall, said slave plunger comprising axially spaced dual plunger heads operating within said tubular pump cylinder; and said slave pump check valve assembly means comprising two inlet and outlet check valve assemblies operatively associated with said plunger heads, each outlet of said inlet and outlet check valve assemblies discharging separately through said outlet conduit means.
Claim 4
Dependent Claim
303 words
A unitary self-metering multifluid proportioning apparatus comprising constant displacement hydraulic motor means including a housing having first and second end walls; master piston means operating within said housing; a connecting rod carried by the master piston means and passing through the first end wall of the housing; constant displacement slave pump means carried by said second end wall and including a tubular pump cylinder mounted in the said second end wall; a slave plunger axially aligned with said master piston means and operating within said tubular pump cylinder; said slave plunger means being in driven association with said connecting rod; a water supply inlet and delivery conduit means connected to said housing; a water gating assembly on said housing interposed said water supply inlet and said motor means gating water to alternate sides of said master piston means operating within said housing; spring loaded lever means mounted on said water gating assembly and linked to a reversing rod; linkage means between the connecting rod and the said reversing rod whereby the reversing rod and the slave plunger follow the reversible motion of the master piston means; a flow control within said water gating assembly shifted by said spring loaded lever means; slave pump check valve assembly means supported by the said second end wall and containing an inlet connection; outlet conduit means, said outlet conduit means discharging additive fluid directly into said delivery conduit means; said tubular pump cylinder extending axially within said housing from said second end wall, said slave plunger comprising axially spaced dual plunger heads operating within said tubular pump cylinder; and said slave pump check valve assembly means comprising two inlet and outlet check valve assemblies operatively associated with said plunger heads, each outlet of said inlet and outlet check valve assemblies discharging separately through said outlet conduit means.
Claim 5
Dependent Claim
247 words
A self-metering dual proportioning apparatus for multiple fluids which comprises fluid supply conduit means, constant displacement master hydraulic motor means including a motor cylinder to which said fluid supply conduit means is connected through a fluid gating assembly on said motor means interposed said fluid supply inlet and said motor cylinder, displacement slave pump means, delivery conduit means, said slave pump means and said master motor means separately discharging into said delivery conduit means to provide a proportioned mixture of fluids flowing separately from said motor means and flowing from said slave pump means, said slave pump means comprising a fixed tubular pumping chamber, master piston means in said motor means, and a connecting rod, said fixed tubular pumping chamber being mounted through an end wall of said motor means within said motor cylinder in axial alignment with said master piston means, slave plunger means reciprocating in said tubular pumping chamber, said slave plunger means being in driven association with said connecting rod and projecting through the master piston means as said master piston means traverses the motor cylinder from end to end and as said slave plunger means is operated within said fixed tubular pumping chamber; said tubular pumping chamber extending axially from said motor cylinder through said end wall and said slave plunger means including a pair of spaced heads; and separate inlet and outlet check valve assemblies on said tubular pumping chamber extension with a ported wall between said assemblies and separating said heads.
Claim 6
Dependent Claim
247 words
A self-metering dual proportioning apparatus for multiple fluids which comprises fluid supply conduit means, constant displacement master hydraulic motor means including a motor cylinder to which said fluid supply conduit means is connected through a fluid gating assembly on said motor means interposed said fluid supply inlet and said motor cylinder, displacement slave pump means, delivery conduit means, said slave pump means and said master motor means separately discharging into said delivery conduit means to provide a proportioned mixture of fluids flowing separately from said motor means and flowing from said slave pump means, said slave pump means comprising a fixed tubular pumping chamber, master piston means in said motor means, and a connecting rod, said fixed tubular pumping chamber being mounted through an end wall of said motor means within said motor cylinder in axial alignment with said master piston means, slave plunger means reciprocating in said tubular pumping chamber, said slave plunger means being in driven association with said connecting rod and projecting through the master piston means as said master piston means traverses the motor cylinder from end to end and as said slave plunger means is operated within said fixed tubular pumping chamber; said tubular pumping chamber extending axially from said motor cylinder through said end wall and said slave plunger means including a pair of spaced heads; and separate inlet and outlet check valve assemblies on said tubular pumping chamber extension with a ported wall between said assemblies and separating said heads.
Claim 7
Dependent Claim
26 words
The self-metering dual proportioner of claim 3 wherein said motor means includes a spring delayed linkage between the master piston means and the slave plunger means.
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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) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |