US3894690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Horticulture spraying systems
Assignee: Individual
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Filing: 1974-08-30
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Granted: 1975-07-15
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Expires: 1994-08-30
Abstract
Abstract This horticulture system mixes and meters two liquids in precise and determinable quantities and provides for appropriate control of the liquid flow. A water tank and a chemical tank are respectively coupled by constant volume pumping means to a mixing and discharge nozzle means. The pumps are driven by a common motor to obtain a predetermined flow ratio. A pressure responsive bypass valve means is connected between the output side of the pumps and the respective tanks to provide an automatic bypass of the respective liquids to their respective tanks in response to the opening and closing of the discharge nozzle. The bypass function of the bypass valve is controlled by pressure generated in the system. Bell means are provided to respond to the presence of flowing chemicals in the chemical output line to indicate that a metered volume or flow of chemicals is occurring and to provide an indication of the relative flow volume. The bypass valve includes an improved pressure responsive system which is adjustable for differing line pressure conditions.
Inventors
- 👤 Raymond G Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:36
CPC Classifications
B; B05; B05B; B05B7/00; B05B7/24; B05B7/26; B05B7/28; B05B7/32; B05B12/00; B05B12/14; B05B12/1418
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
163 words
Apparatus for supplying a liquid mixture consisting of at least two base liquids comprising first tank means and first pump means for supplying a first liquid, second tank means and second pump means for supplying a second liquid, means coupled to said first and second pump means for receiving said first and second liquids, said receiving means including a selectively operable discharge nozzle, bypass valve means having a first inlet and first outlet and a second inlet and second outlet, valve element means in said bypass valve means for selectively opening and closing the communication path between a respective inlet and outlet, said valve element means being responsive to pressure for opening and closing of said communication paths, pressure responsive control means coupled to said bypass valve means for applying control pressure to said valve elements, and means coupling said pressure responsive control means to said receiving means whereby the pressure responsive control means is responsive to the operation of said discharge nozzle.
Claim 2
Dependent Claim
163 words
Apparatus for supplying a liquid mixture consisting of at least two base liquids comprising first tank means and first pump means for supplying a first liquid, second tank means and second pump means for supplying a second liquid, means coupled to said first and second pump means for receiving said first and second liquids, said receiving means including a selectively operable discharge nozzle, bypass valve means having a first inlet and first outlet and a second inlet and second outlet, valve element means in said bypass valve means for selectively opening and closing the communication path between a respective inlet and outlet, said valve element means being responsive to pressure for opening and closing of said communication paths, pressure responsive control means coupled to said bypass valve means for applying control pressure to said valve elements, and means coupling said pressure responsive control means to said receiving means whereby the pressure responsive control means is responsive to the operation of said discharge nozzle.
Claim 3
Dependent Claim
70 words
The apparatus as defined in claim 1 and further including a first bypass conduit connected to said first inlet and said first outlet, a first manual bypass valve in said first bypass conduit for selectively bypassing said bypass valve means, a second bypass conduit connected to said second inlet and said second outlet, a second manual bypass valve in said second bypass conduit for selectively bypassing said bypass valve means.
Claim 4
Dependent Claim
44 words
The apparatus as defined in claim 1 and further including means for jointly driving said pump means and means for producing an audible sound as a function of the speed of one of said pumps and of the output pressure from said one pump.
Claim 5
Dependent Claim
47 words
The apparatus as defined in claim 3 wherein said second producing means includes means for sensing the relative output pressure from said one pump and means responsive to said sensing means responsive to said sensing means for producing audible sounds as a function of the pump speed.
Claim 6
Dependent Claim
43 words
The apparatus as defined in claim 1 and further including means for connecting said pressure responsive control means to only one of said pump means so that the operation of said pressure responsive control means is responsive to only said one pump means.
Claim 7
Dependent Claim
171 words
Apparatus for supplying a liquid mixture consisting of at least two base liquids comprising first tank means and first pump means for supplying a first liquid, second tank means and second pump means for supplying a second liquid, means coupled to said first and second pump means for receiving said first and second liquids, said receiving means including a selectively operable discharge nozzle, first means for providing a first bypass conduit from said first pump means to said first tank means, second means for providing a second bypass conduit from said second pump means to said second tank means, means in each of said first and second bypass conduits for opening and closing said bypass conduits in response to pressure at said discharge nozzle, pressure responsive control means coupled to said bypass conduit opening and closing means for controlling the operation of said bypass conduits, and means coupling said pressure responsive means to said receiving means whereby the pressure responsive control means is responsive to the pressure at said discharge nozzle.
Claim 8
Dependent Claim
171 words
Apparatus for supplying a liquid mixture consisting of at least two base liquids comprising first tank means and first pump means for supplying a first liquid, second tank means and second pump means for supplying a second liquid, means coupled to said first and second pump means for receiving said first and second liquids, said receiving means including a selectively operable discharge nozzle, first means for providing a first bypass conduit from said first pump means to said first tank means, second means for providing a second bypass conduit from said second pump means to said second tank means, means in each of said first and second bypass conduits for opening and closing said bypass conduits in response to pressure at said discharge nozzle, pressure responsive control means coupled to said bypass conduit opening and closing means for controlling the operation of said bypass conduits, and means coupling said pressure responsive means to said receiving means whereby the pressure responsive control means is responsive to the pressure at said discharge nozzle.
Claim 9
Dependent Claim
37 words
The apparatus as defIned in claim 6 and further including first manually controllable bypass means connected in parallel to said first bypass conduit and second manually controllable bypass means connected in parallel to said second bypass conduit.
Claim 10
Dependent Claim
63 words
The apparatus as defined in claim 6 wherein said opening and closing means include a first inlet and outlet and a second inlet and outlet, valve element means for said first and second outlets for selectively opening and closing the communication path between a responsive inlet and outlet, said valve elements being responsive to pressure for opening and closing of said communication paths.
Claim 11
Dependent Claim
62 words
The apparatus as defined in claim 8 wherein said pressure responsive means includes a valve seat and valve element, said valve element having larger and smaller area pistons, resilient means constructed and arranged for closing said valve element on said valve seat, said pistons being responsive to pressure at the discharge nozzle for opening said valve element relative to said valve seat.
Claim 12
Dependent Claim
120 words
The apparatus as defined in claim 1 wherein said bypass valve means includes a cylinder with a pair of pistons slidably and sealingly received therein, each of said pistons carrying a valve seating element for seating engagement with an outlet located in the end of said cylinder, said pistons defining a central chamber therebetween, said pressure responsive control means including a valve element and valve seat in said central chamber, means coupled to said valve element for resiliently biasing said valve element into a closed position on said valve seat, piston and cylinder means mechanically coupled to said valve element and hydraulically coupled to said receiving means for actuating said valve element in response to pressure from said discharge nozzle.
Claim 13
Dependent Claim
20 words
The apparatus as defined in claim 10 and further including means for adjusting the force of said resilient biasing means.
Claim 14
Dependent Claim
27 words
The apparatus as defined in claim 10 wherein said valve seating element includes a ball and socket connection relative to a piston for seating on an outlet.
Claim 15
Dependent Claim
200 words
Apparatus for supplying a liquid mixture consisting of at least two base liquids comprising first tank means and first pump means for supplying a first liquid, second tank means and second pump means for supplying a second liquid, means coupled to said first and second pump means for receiving said first and second liquids and said receiving means including a selectively operable discharge nozzle. first means for providing a first bypass conduit from said first pump means to said first tank means, second means for providing a second bypass conduit from said second pump means to said second tank means, means in each of said first and second bypass conduits for opening and closing said bypass conduits in response to pressure at said discharge nozzle, one of said pump means having a flexible outlet portion and a pump shaft rotatable in proportion to liquid flow through the pump, a timing element slidably supported on said pump shaft, means responsive to inflation and deflation of said flexible outlet portion for selectively engaging and disengaging said timing element for rotation with said pump shaft, and means responsive to said timing element when engaged with said pump shaft for producing an audible sound.
Claim 16
Dependent Claim
200 words
Apparatus for supplying a liquid mixture consisting of at least two base liquids comprising first tank means and first pump means for supplying a first liquid, second tank means and second pump means for supplying a second liquid, means coupled to said first and second pump means for receiving said first and second liquids and said receiving means including a selectively operable discharge nozzle. first means for providing a first bypass conduit from said first pump means to said first tank means, second means for providing a second bypass conduit from said second pump means to said second tank means, means in each of said first and second bypass conduits for opening and closing said bypass conduits in response to pressure at said discharge nozzle, one of said pump means having a flexible outlet portion and a pump shaft rotatable in proportion to liquid flow through the pump, a timing element slidably supported on said pump shaft, means responsive to inflation and deflation of said flexible outlet portion for selectively engaging and disengaging said timing element for rotation with said pump shaft, and means responsive to said timing element when engaged with said pump shaft for producing an audible sound.
Claim 17
Dependent Claim
35 words
The apparatus as defined in claim 13 and further including pressure control means coupled to said discharge nozzle and to said opening and closing means for controlling the operation of flow through said bypass conduit.
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) | 1978-07-14 | 1979-01-13 | 1979-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-14 | 1983-01-13 | 1983-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-14 | 1987-01-13 | 1987-07-15 | $7700.00 | Window Closed / Lapsed |