GB2214047A - Uniform spraying of plants - Google Patents
Uniform spraying of plants Download PDFInfo
- Publication number
- GB2214047A GB2214047A GB8900548A GB8900548A GB2214047A GB 2214047 A GB2214047 A GB 2214047A GB 8900548 A GB8900548 A GB 8900548A GB 8900548 A GB8900548 A GB 8900548A GB 2214047 A GB2214047 A GB 2214047A
- Authority
- GB
- United Kingdom
- Prior art keywords
- spraying
- plants
- control system
- vehicle
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000005507 spraying Methods 0.000 title claims description 23
- 239000007921 spray Substances 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 12
- 241001311422 Liris Species 0.000 claims 1
- 230000000717 retained effect Effects 0.000 claims 1
- 239000002420 orchard Substances 0.000 description 4
- 239000000417 fungicide Substances 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 2
- 241000555745 Sciuridae Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000006193 liquid solution Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/06—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump the delivery being related to the movement of a vehicle, e.g. the pump being driven by a vehicle wheel
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0003—Atomisers or mist blowers
- A01M7/0014—Field atomisers, e.g. orchard atomisers, self-propelled, drawn or tractor-mounted
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M7/00—Special adaptations or arrangements of liquid-spraying apparatus for purposes covered by this subclass
- A01M7/0089—Regulating or controlling systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
- B05B12/122—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to presence or shape of target
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
- B05B12/126—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus responsive to target velocity, e.g. to relative velocity between spray apparatus and target
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Insects & Arthropods (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Catching Or Destruction (AREA)
- Special Spraying Apparatus (AREA)
Description
1 n r r? i z_/_1404Y CONTROL SYSTEM FOR UNIFORM SPRAYING OF PLANTS
Details of an apparatus for sensing the presence and profile of plants to be sprayed by apparatus of the present invention are disclosed in our copending application entitled "PLANT PROFILING SENSOR"; filed on even date herewith.
The present invention relates to apparatus for spraying plants with agricultural solutions, such as pesticides or fungicides, and more particularly, to sprayers which conserve spray solution by sensing the presence or absence of plants and supplying solution only to areas containing plants.
Air sprayers have been employed for many years to apply pesticides, fungicides and other agricultural liquid solutions to the foliage and fruits of orchards, groves and vineyards. An air sprayer generally employs a liquid flow system and an air flow system designed to work together to deliver a controlled air-spray pattern which penetrates the f oliage and f ruits of a plant.. The liquid f low system of the sprayer includes a holding tank mounted on a trailer frame, a plurality of spray nozzles, a pump which is driven by an engine on the trailer frame or by a power take off of a tractor which pulls the spray trailer, conduits and valving for delivering the spray solution f rom. the tank to the pump and subsequently to nozzles under regulated pressure. The air flow system employs the blower assembly having at least one discharge opening f or directing an air 2 0 blast generally transversely of the path of travel of the sprayer. The spray nozzles are disposed in the discharge opening to deliver atomized spray solutions for entrainment in the air blast.
one known type of air sprayer for spraying orchards includes a centrifugal or squirrel cage fan which is disposed behind the spray tank on the sprayer trailer. The centrifugal fan includes a housing having air outlet openings oriented transversely of' the-path of travel of the sprayer, and an inlet opening extending rearwardly and longitudinally of the sprayer's path of travel. Normally, a pair of deflector housings are connected to each outlet opening. Each deflector housing has a "fishtail" shape and an arcuate discharge opening which extends transversely of the sprayer. The arcuate opening is adapted to deliver an air blast extending over an outward, widely diverging pattern. Typically, the deflector housings are adjustably mounted to the respective centrifugal fans so that the air blast may be directed at various angles relative to the horizontal. This type of spray is normally used to spray two rows of plants at one time, the deflector housing being adjusted to direct the air blasts in opposite transverse directions relative to the path of movement of the sprayer. Such sprayers deliver the spray solution over a predetermined area;Lrrespective of the presence or absence of plants along the row of plants. This can result in a substantial waste of spray solution when plants are smaller 3 1.
than average or when plants are missing from a row.
According to the present invention a control system for providing unif orm spraying of plants by a vehicle having a source of liquid comprises:
plurality of spraying means; liquid pump connected between the source of liquid and the spraying means; means for sensing the ground speed of the vehicle; and means for adjusting the rate of liquid flow in accordance with the ground speed of the vehicle such that the spraying is uniform.
Preferably the control system is used in an air sprayer having means to sense the presence or absence of plants as the sprayer moves along the ground and which turns on sprayer nozzles to cover only areas which contain plants to be sprayed. This can be achieved by using a plurality of plant sensors mounted around the upper periphery of the sprayer and which each sense the presence or absence of plants in a narrow f ield of view and each provide a signal which actuates a corresponding spray nozzle that provides spray solution to an area in which a plant is sensed. The control system also senses ground speed of the sprayer and adjusts the volume of spray solution to provide a predetermined density of coverage of the plants irrespective of the ground speed of the sprayer.
A computer can be used to receive input signals from a ground speed sensor and from the plant sensors and to C 4 provide control signals to a plurality of valves which control a quantity of spray from the individual spray nozzles. A manual control can be adjusted by a human operator to set the level of spray density to the plants.
An embodiment of the invention will now be described by way of example and with reference to the drawings, wherein:- Fig. 1 is a side elevation illustrating the air sprayer apparatus which includes the sprayer control system of the present invention.
Fig. 2 is a front elevation of the air sprayer apparatus disclosed in Fig. 1.
Fig. 3 is a rear elevation of the air sprayer apparatus disclosed in Fig. 1.
Fig. 4 is a diagrammatic illustration of a control system of the present invention for use in an air sprayer apparatus.
Referring now more particularly to Figs. 1-3, an air sprayer apparatus 10 for orchards and the like includes a main frame 11 which is movable on a pair of wheels 12, 13. A tongue 17 is adapted for connection-to a tractor or other source of propulsion through an orchard or vineyard. A holding tank 18 for carrying an agricultural spray solution is mounted over the wheels 12, 13 and an engine 19 for operating a pump 22 and a blower assembly 23 is mounted on the front portion of frame 11. The blower assembly 23 includes an air 'inlet opening 24 and a 'Plurality of outlet openings 27 adjacent to a plurality of spray nozzles 28.
1 1, The blower assembly provides an air blast through the outlet openings 27 which cause spray solution from nozzles 28 to be blown outwardly onto plants (not shown) adjacent to sprayer 10. A plurality of plant sensors 2'-9a - 29h (Figs. 1, 2) mounted along the front portion of sprayer apparatus 10 each sense the presence or absence of plants in a conical area 30a - 30h extending radially outward from apparatus 10 (Fig. 2). Sensor 29a senses any plant present in conical area 30a; sensor 29b senses any plant present in conical area 30b, etc. Sensors 29a - 29h can be ultrasonic transducers of the type described in a copending United Kingdom patent application entitled "Plant Profiling sensor" and listed above.
A control box 34 (Fig. 1) having means for mounting on a front portion 10a of sprayer apparatus 10 is connected to apparatus 10 by a flexible signal cable 35. The control box 34 includes a plurality of push buttons or other controls (not shown) on an operator's panel 36 (Fig. 4) for selecting spray density and other parameters by a human operator. The control box 34 can be unhooked from the sprayer apparatus and moved into the cab of a tractor (not shown) to provide convenient selection of spray control parameters by the human operator. A speed sensor 40 (Figs. 1, 4) connected to one of the wheels 12, 13 provides speed signals proportional to the ground speed of the sprayer apparatus.
As spray apparatus 10 moves along the ground each of 6 the plant sensors 29a - 29h (Figs. 2, 4) senses the presence or absence of plants in the corresponding conical area 30a 30h adjacent to the front portion of apparatus 10 and sends a "plant-present" or "plant-absent" signal to a computer 41 (Fig. 4). The computer stores the signals until the nozzles 28a - 28h are adjacent to the sensed plants. Computer 41 then provides valve control signals to any of a plurality of valves 53a - 53h corresponding to the plant sensors 29a - 29h which have sent a -"plantpresent" signal to computer 41. For example, when sensor 29a (Fig. 4) detects a plant, computer 41 sends a valve control signal over lead 54 which causes valve 53a to open. so pump 22 provides fluid through valve 46, transducer 47 and a conduit 55a to a cluster of nozzles 28a. Nozzles 28a and blower assembly 23 provide fluid to a plant in conical area 30a (Fig. 3). When any or all of the sensors 29a - 29h detect plants the corresponding valves 53a - 53h, conduits 55a 55h and nozzles 28a 28h provide fluid in the corresponding conical area 30a 30h. Flow transducer 47 provides computer 41 with information _concerning rate of fluid flow to manifolds 48, 49 and a pressure transducer 59 provides a signal representative of fluid pressure provided to manifolds 48, 49. As fluid flow to manifolds 48, 49 decreases, pressure from pump 22 increases, causing pressure transducer 59 to provide a signal to computer 41 which causes amplifier'42 to partially close valve 46. Partially closing valve 46 causes athe pressure from pump 22 to 1 -I- S 7 increase and causes fluid flow through a bypass pipe 60 to increase slightly. Bypass pipe 60 and a fluid return pipe 61 allow fluid to be pumped from tank 18 by pump 22 whenever engine 19 is running.
The present invention may include means for sensing the presence or absence of plants in a plurality of zones adjacent to the sprayer apparatus for supplying pesticides or fungicides to only the zones containing plants, thus reducing waste of materials. - A speed sensor senses ground speed of the sprayer apparatus and, adjusts the volume of spray solution to provide a predetermined density of coverage of the plants irrespective of the ground speed of the apparatus.
Although the best mode contemplated for carrying out the present invention has been herein shown and desribed, it will be apparent that modification and variation may be made without departing from what is regarded to be the subject matter of the invention as defined in the claims.
8
Claims (9)
- CLAIMS:A control system for providing unif orm spraying of plants by a vehicle having a source of liquid, the system comprising:plurality of spraying means; liquid pump connected between the source of liquid and the spraying means; means for sensing the ground speed of the vehicle; and means for adjusting the -rate of liquid flow in accordance with the ground speed of the vehicle such that the spraying is uniform.
- 2. A control system as claimed in claim 1 including means for detecting the presence of a plant in each of a plurality of areas adjacent to the vehicle and means for controlling fluid flow to each of said spraying means in response to the sensing of a plant in the corresponding area of spraying means coverage.
- 3. A control system as defined in claim 2 wherein the means for controlling fluid flow causes the spraying means to spray liquid into an area only when.said area contains a plant.
- 4. A control system as claimed in claim 2 or 3 wherein the means for controlling fluid flow comprises a plurality of fluid control valves, each valve being connected between the pump and one of said spraying means.
- 5. A control system as claimed in claim 2, 3 or 4 wherein the said plurality of areas lies ahead of the spraying . 11 1 c J 1 9 means, the vehicle is moved and liquid is provided to the spraying means when said spraying means move adjacent to said sensed plants.
- 6. A control system as defined in claim 5 including means for using said sensors to detect plants in a plurality of areas ahead of the spraying means on said vehicle, means for retaining actuating signals developed when said plants are detected, and means for using the retained actuating signals to actuate the control valves when the spraying means have moved adjacent to the detected plants.
- 7. A control system as claimed in claim 6 including computing means connected between the plant sensors and the control valves, the computing means having means for using the actuating signals from the sensors to develop control signals for actuating said control valves.
- 8. A control system as claimed in any preceding claim wherein the spraying means each comprise a cluster of nozzles.
- 9. A control system for prcividing uniform spraying of plants substantially as described with reference to or as shown in the drawings.Published 1989 atThe Patent Office, State House, 68171 High Holborn, London WCIR 4TP. Further copiesmaybe obtained from The Patent Offt", U&a:3rar--.n, at V-A7 rri;, Oiving',;on,!L-at LIRIS "MO). Printed by Multiplex 'Achniquez ltd, St Mary Cray, Rent, Con. 1/87
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14517388A | 1988-01-19 | 1988-01-19 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8900548D0 GB8900548D0 (en) | 1989-03-08 |
| GB2214047A true GB2214047A (en) | 1989-08-31 |
| GB2214047B GB2214047B (en) | 1992-04-01 |
Family
ID=22511925
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8900548A Expired - Lifetime GB2214047B (en) | 1988-01-19 | 1989-01-11 | Control system for uniform spraying of plants |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE3900221A1 (en) |
| FR (1) | FR2625869B1 (en) |
| GB (1) | GB2214047B (en) |
| IT (1) | IT1228486B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4989783A (en) * | 1989-08-14 | 1991-02-05 | Fmc Corporation | Sensor mounting |
| US5172861A (en) * | 1990-10-26 | 1992-12-22 | Ag-Spray Corporation | Agricultural sprayer |
| WO2015143493A1 (en) * | 2014-03-27 | 2015-10-01 | Tooleytech Pty Ltd | Spraying apparatus and methods of spraying |
| US11064690B2 (en) | 2015-12-02 | 2021-07-20 | Pulverizadores Fede, S.L. | Sprayer |
| EP3944761A1 (en) * | 2020-07-28 | 2022-02-02 | Robert Bosch GmbH | Fluid atomizing machine and method for spraying an atomized fluid on a target using a fluid atomizing machine |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4039797A1 (en) * | 1990-12-13 | 1991-09-26 | Manfred Prof Dr Hoffmann | Sensor controlled plant cultivation and weed control equipment - uses variety of sensors in conjunction with weed destruction devices under processor control |
| FR2673857A1 (en) * | 1991-03-12 | 1992-09-18 | Lignones Hubert | Method for spraying a liquid substance by means of an applicator (boom), spray device for its implementation and movable spray machine for application thereof |
| US5315564A (en) * | 1992-02-06 | 1994-05-24 | Fmc Corporation | Sensing apparatus |
| US5793035A (en) * | 1992-07-28 | 1998-08-11 | Patchen, Inc. | Apparatus and method for spraying herbicide on weeds in a cotton field |
| US5585626A (en) * | 1992-07-28 | 1996-12-17 | Patchen, Inc. | Apparatus and method for determining a distance to an object in a field for the controlled release of chemicals on plants, weeds, trees or soil and/or guidance of farm vehicles |
| DE19518058C2 (en) * | 1995-05-17 | 1999-08-19 | Jacoby Gmbh & Co Kg M | Device for spraying indoor cultures |
| DE10221948B4 (en) | 2001-05-14 | 2004-03-11 | Kümmel, Knut, Dipl., -Ing. | Process and system for volume-specific influencing of soil and plants |
| FR2852785B1 (en) † | 2003-03-31 | 2006-04-07 | Pellenc Sa | METHOD AND DEVICE FOR ANALYZING THE STRUCTURE AND CONSTITUTION OF CULTURAL HEDGES, SUCH AS FOR EXAMPLE RANKS OF VINE |
| DE102005010686B9 (en) * | 2004-03-16 | 2013-07-04 | Johannes Benninger | Method for planting seedlings and / or for direct or single-seed sowing and for seed and / or plant care |
| DE102008009753B3 (en) * | 2008-02-18 | 2009-09-10 | Yara International Asa | Method for contactless determination of biomass and morphological parameter of plant populations, involves treating plants of populations with ultrasound by releasing acoustic pulses from ultrasound source |
| CN112243843B (en) * | 2020-10-26 | 2022-04-01 | 南京林业大学 | Garden green plant maintenance device and maintenance method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1208956A (en) * | 1968-04-11 | 1970-10-14 | Direct Nitrogen Ltd | Meter |
| GB1465131A (en) * | 1974-04-04 | 1977-02-23 | Lestradet M C J | Spraying apparatus |
| GB1473930A (en) * | 1974-03-01 | 1977-05-18 | Lestradet M C J | Supply system and vehicle equipped with such a system |
| GB1584596A (en) * | 1976-08-06 | 1981-02-11 | Dickey John Corp | Liquid spreader control system |
| GB2064826A (en) * | 1979-11-28 | 1981-06-17 | Agmet Instr | Apparatus for controlling application of spraying fluid by spraying equipment |
| US4322034A (en) * | 1980-04-16 | 1982-03-30 | Deere & Company | Hydraulic rate control system for sprayers |
| EP0155850A2 (en) * | 1984-03-20 | 1985-09-25 | Nomix Manufacturing Co. Limited | Apparatus for distributing fluid |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3168238A (en) * | 1962-10-19 | 1965-02-02 | Fmc Corp | Chemical distributing machine |
| FR2086691A5 (en) * | 1970-04-06 | 1971-12-31 | Bouyssou Jean | |
| FR2371121A7 (en) * | 1976-11-15 | 1978-06-09 | Favier Christian | Atomiser for vine spraying system - has flow to outlet nozzles controlled by electromagnetic valve which is actuated by diaphragm switch |
| US4206569A (en) * | 1978-09-05 | 1980-06-10 | Randolph Joe G | Weed sprayer |
| US4530463A (en) * | 1982-08-05 | 1985-07-23 | Hiniker Company | Control method and apparatus for liquid distributor |
| US4768713B1 (en) * | 1982-12-15 | 1995-03-21 | Bert E Roper | Grove sprayer |
| NL8501365A (en) * | 1985-05-13 | 1986-12-01 | Multinorm Bv | METHOD AND APPARATUS FOR SPRAYING A LIQUID |
| US4823268A (en) * | 1987-06-23 | 1989-04-18 | Clemson University | Method and apparatus for target plant foliage sensing and mapping and related materials application control |
| DE3827273A1 (en) * | 1988-08-11 | 1990-02-15 | Alois Assfalg | METHOD AND DEVICE FOR CONTROLLING A PROCESS AFTER CONFIGURING A FLAT OR SPATIAL CONSTRUCTION NEAR THE GROUND FLOOR |
-
1989
- 1989-01-05 DE DE3900221A patent/DE3900221A1/en active Granted
- 1989-01-11 GB GB8900548A patent/GB2214047B/en not_active Expired - Lifetime
- 1989-01-18 FR FR8900561A patent/FR2625869B1/en not_active Expired - Fee Related
- 1989-01-19 IT IT8919129A patent/IT1228486B/en active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1208956A (en) * | 1968-04-11 | 1970-10-14 | Direct Nitrogen Ltd | Meter |
| GB1473930A (en) * | 1974-03-01 | 1977-05-18 | Lestradet M C J | Supply system and vehicle equipped with such a system |
| GB1465131A (en) * | 1974-04-04 | 1977-02-23 | Lestradet M C J | Spraying apparatus |
| GB1584596A (en) * | 1976-08-06 | 1981-02-11 | Dickey John Corp | Liquid spreader control system |
| GB2064826A (en) * | 1979-11-28 | 1981-06-17 | Agmet Instr | Apparatus for controlling application of spraying fluid by spraying equipment |
| US4322034A (en) * | 1980-04-16 | 1982-03-30 | Deere & Company | Hydraulic rate control system for sprayers |
| EP0155850A2 (en) * | 1984-03-20 | 1985-09-25 | Nomix Manufacturing Co. Limited | Apparatus for distributing fluid |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4989783A (en) * | 1989-08-14 | 1991-02-05 | Fmc Corporation | Sensor mounting |
| US5172861A (en) * | 1990-10-26 | 1992-12-22 | Ag-Spray Corporation | Agricultural sprayer |
| WO2015143493A1 (en) * | 2014-03-27 | 2015-10-01 | Tooleytech Pty Ltd | Spraying apparatus and methods of spraying |
| US11064690B2 (en) | 2015-12-02 | 2021-07-20 | Pulverizadores Fede, S.L. | Sprayer |
| EP3944761A1 (en) * | 2020-07-28 | 2022-02-02 | Robert Bosch GmbH | Fluid atomizing machine and method for spraying an atomized fluid on a target using a fluid atomizing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8900548D0 (en) | 1989-03-08 |
| IT8919129A0 (en) | 1989-01-19 |
| GB2214047B (en) | 1992-04-01 |
| FR2625869B1 (en) | 1994-02-04 |
| FR2625869A1 (en) | 1989-07-21 |
| DE3900221C2 (en) | 1993-08-05 |
| IT1228486B (en) | 1991-06-19 |
| DE3900221A1 (en) | 1989-07-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980111 |