Patent US3980230A successfully refreshed from Google Patents.
US3980230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprayer-mixer
Assignee: Individual
•
Filing: 1975-01-06
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Granted: 1976-09-14
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Expires: 1995-01-06
Abstract
Abstract A spray mechanism for use with diluted chemicals wherein a concentrated chemical as well as the predetermined amount of diluting liquid are simultaneously pumped to the spray nozzle and are admixed at the spray nozzle. The nozzle and pumping mechanism are such that a closing of the nozzle stops the pumps which supply the chemicals without interrupting the movement of the prime mover.
Inventors
- 👤 Orvi C. Pringle
- 👤 John Beheyt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:30
CPC Classifications
A; A01; A01M; A01M7/00; A01M7/0089; A01M7/0092; B; B05; B05B; B05B15/00; B05B15/20; B05B15/25; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
221 words
A fluid mixing and spraying system comprising a prime mover, a pressure compensated, positive displacement hydraulic pump driven by the prime mover, said hydraulic pump having a variable volumetric outflow including an operating volumetric outflow condition and a minimal volumetric outflow condition, hydraulic drive means, hydraulic line means interconnecting said hydraulic pump and said hydraulic drive means, a water reservoir, a positive displacment water pump for pumping water from said water reservoir, a chemical solution reservoir, a positive displacement solution pump for pumping solution from the solution reservoir, means for varying the output of the solution pump for varying solution proportions, means interconnecting said water pump and said solution pump to said hydraulic drive means, conduit means interconnecting said water pump and said solution pump, a spray nozzle attached to said interconnecting conduit means for controlling the discharge from the interconnected pumps, said interconnecting conduit means, positive displacement water and solution pumps, hydraulic drive means, and hydraulic line means forming a direct power link between said pressure compensated hydraulic pump and said spray nozzle whereby the closing of said spray nozzle backs the driving power directly back through the entire system and directly applies back pressure to said pressure compensated hydraulic pump for reducing the volumetric outflow of the hydraulic pump and thus places the whole system in a passive condition.
Claim 2
Dependent Claim
221 words
A fluid mixing and spraying system comprising a prime mover, a pressure compensated, positive displacement hydraulic pump driven by the prime mover, said hydraulic pump having a variable volumetric outflow including an operating volumetric outflow condition and a minimal volumetric outflow condition, hydraulic drive means, hydraulic line means interconnecting said hydraulic pump and said hydraulic drive means, a water reservoir, a positive displacment water pump for pumping water from said water reservoir, a chemical solution reservoir, a positive displacement solution pump for pumping solution from the solution reservoir, means for varying the output of the solution pump for varying solution proportions, means interconnecting said water pump and said solution pump to said hydraulic drive means, conduit means interconnecting said water pump and said solution pump, a spray nozzle attached to said interconnecting conduit means for controlling the discharge from the interconnected pumps, said interconnecting conduit means, positive displacement water and solution pumps, hydraulic drive means, and hydraulic line means forming a direct power link between said pressure compensated hydraulic pump and said spray nozzle whereby the closing of said spray nozzle backs the driving power directly back through the entire system and directly applies back pressure to said pressure compensated hydraulic pump for reducing the volumetric outflow of the hydraulic pump and thus places the whole system in a passive condition.
Claim 3
Dependent Claim
19 words
The fluid mixing and spraying system as in claim 1; said hydraulic drive means including a hydraulic piston motor.
Claim 4
Dependent Claim
126 words
A fluid mixing and spraying system including a positive displacement, pressure compensated hydraulic pump having a variable volumetric outflow including an operating volumetric outflow condition and a zero volumetric outflow condition, a spray nozzle, means for pumping water to the spray nozzle, means for pumping solution to the spray nozzle, hydraulically powered drive means for powering the water and solution pumping means, and hydraulic conduit means coupling the drive means to said hydraulic pump, said water and solution pumping means, hydraulically powered drive means, and hydraulic conduit means forming a power link directly coupling the spray nozzle to said hydraulic pump for placing said hydraulic pump in said zero volumetric outflow condition when said spray nozzle is closed for placing the system in a passive condition.
Claim 5
Dependent Claim
126 words
A fluid mixing and spraying system including a positive displacement, pressure compensated hydraulic pump having a variable volumetric outflow including an operating volumetric outflow condition and a zero volumetric outflow condition, a spray nozzle, means for pumping water to the spray nozzle, means for pumping solution to the spray nozzle, hydraulically powered drive means for powering the water and solution pumping means, and hydraulic conduit means coupling the drive means to said hydraulic pump, said water and solution pumping means, hydraulically powered drive means, and hydraulic conduit means forming a power link directly coupling the spray nozzle to said hydraulic pump for placing said hydraulic pump in said zero volumetric outflow condition when said spray nozzle is closed for placing the system in a passive condition.
References Cited (Backward Citations)
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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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |