Patent US4283500A successfully refreshed from Google Patents.
Patent US3776252A successfully refreshed from Google Patents.
US3776252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-regulating system for mixing liquids
Assignee: Riggs and Lombard Inc
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Filing: 1971-12-03
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Granted: 1973-12-04
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Expires: 1991-12-03
Abstract
Abstract A system is provided for mixing,on demand, two or more liquids at a constant ratio with one of the liquids serving to pump one or more of the other liquids into the system. The piston of one cylinder is drivingly connected to the piston of another cylinder, the first cylinder being connected to a source of pressurized liquid, such as water,which serves as a driving force for the piston of the second cylinder which is connected to the source of liquid,such as a detergent, whereby a constant ratio of liquids is maintained. Conduits are provided to mix the discharges of the two cylinders prior to delivery to a chamber such as a washing tank for a running textile web. A control system is provided for actuating the pumping system to maintain a constant level of mixed liquids in the chamber.
Inventors
- 👤 H Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:41
CPC Classifications
G; G05; G05D; G05D11/00; G05D11/02; G05D11/03; F; F04; F04B; F04B13/00; F04B13/02; G05D9/00; G05D9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/2496; Y10T137/2514; Y10T137/2516; Y10T137/2534
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
232 words
A system for mixing at least two liquids, comprising a. a first cylinder and a first piston mounted for reciprocation therein, b. a second cylinder and a second piston mounted for reciprocation therein and coaxial with said first cylinder and first piston, c. a connecting rod drivingly connecting said first and second Pistons to one another, d. first conduit means connecting said first cylinder to a source of a first liquid under pressure, e. a single multi-position solenoid actuated valve in said first conduit means and adapted to valve said first liquid to alternating ends of said first cylinder, f. second conduit means connecting one end only of said second cylinder to a source of a second liquid, g. check valve means in said second conduit means, h. third conduit means connecting said first and second conduit means for mixing the discharges thereof, i. a vessel connected to said third conduit means and adapted to receive said mixed first and second liquids, j. liquid level sensing means including a pair of probes mounted to said vessel, k. control means responsive to said sensing means and operatively connected to said multi-position valve for actuating said valve to control the flow of said first liquid to said first cylinder, and, l. switch mounted adjacent said rod and connected to said fourway valve and responsive to reciprocation of said pistons for actuating said four-way valve.
Claim 2
Independent Claim
232 words
A system for mixing at least two liquids, comprising a. a first cylinder and a first piston mounted for reciprocation therein, b. a second cylinder and a second piston mounted for reciprocation therein and coaxial with said first cylinder and first piston, c. a connecting rod drivingly connecting said first and second Pistons to one another, d. first conduit means connecting said first cylinder to a source of a first liquid under pressure, e. a single multi-position solenoid actuated valve in said first conduit means and adapted to valve said first liquid to alternating ends of said first cylinder, f. second conduit means connecting one end only of said second cylinder to a source of a second liquid, g. check valve means in said second conduit means, h. third conduit means connecting said first and second conduit means for mixing the discharges thereof, i. a vessel connected to said third conduit means and adapted to receive said mixed first and second liquids, j. liquid level sensing means including a pair of probes mounted to said vessel, k. control means responsive to said sensing means and operatively connected to said multi-position valve for actuating said valve to control the flow of said first liquid to said first cylinder, and, l. switch mounted adjacent said rod and connected to said fourway valve and responsive to reciprocation of said pistons for actuating said four-way valve.
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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) | 1976-12-03 | 1977-06-04 | 1977-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-03 | 1981-06-04 | 1981-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-03 | 1985-06-04 | 1985-12-04 | $7700.00 | Window Closed / Lapsed |