WO1997016956A1 - A sprinkler for exterminating vermin of crops - Google Patents

A sprinkler for exterminating vermin of crops Download PDF

Info

Publication number
WO1997016956A1
WO1997016956A1 PCT/KR1996/000194 KR9600194W WO9716956A1 WO 1997016956 A1 WO1997016956 A1 WO 1997016956A1 KR 9600194 W KR9600194 W KR 9600194W WO 9716956 A1 WO9716956 A1 WO 9716956A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
vermicide
piston pipe
head portion
piston
Prior art date
Application number
PCT/KR1996/000194
Other languages
French (fr)
Inventor
Chang Kyu Whang
Original Assignee
Chang Kyu Whang
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Chang Kyu Whang filed Critical Chang Kyu Whang
Priority to AU73419/96A priority Critical patent/AU7341996A/en
Publication of WO1997016956A1 publication Critical patent/WO1997016956A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/70—Arrangements for moving spray heads automatically to or from the working position
    • B05B15/72—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means
    • B05B15/74—Arrangements for moving spray heads automatically to or from the working position using hydraulic or pneumatic means driven by the discharged fluid

Definitions

  • the present invention relates to a sprinkler, which can automatically move upward and downward by hydraulic pressure and spread vermicide.
  • an automatic system for spreading vermicide which can prevent damages by blight and harmful insects of crops has a structure that a taller pipe than crops is vertically disposed near crops and vermicide is spread through an injection nozzle applied on a nose of the pipe.
  • the sprinkler having the above structure has a problem that the spread vermicide is not reached to a backside of leaves and an inside of crops because the spread vermicide flows into the ground and wets only leafage of crops. Accordingly, the more amount than the proper amount of vermicide is spread on crops because vermicide is fallen on the ground by gravity so that the amount of vermicide is almost disappeared. Therefore, the prior sprinkler has a problem that can not efficiently prevent vermin and bring about the environmental pollution by the excessive amount of vermicide.
  • the present invention has been made in an effort to solve the above problems. It is an object of the present invention to provide a sprinkler which vermicide can be evenly spread on whole crops by an injection nozzle, which is ascended from an upper portion of crops to a lower portion of crops by a supplied own hydraulic pressure.
  • the present invention realizes the above object by the sprinkler for spreading vermicide sent from a pump including a support pipe on which is vertically connected and disposed to a distribution pipe for sending vermicide from a pump; a piston pipe, which is moved toward an upper portion by a guidance of the support pipe when hydraulic pressure is applied; a head portion having an injection nozzle, which is disposed on a nose of the piston pipe and spreads vermicide supplied through the piston pipe; and an elastic return member for descending the head portion when hydraulic pressure is removed by an elastic force, which is generated by an ascension of the head portion.
  • Fig. 1 is a view illustrating a state of a sprinkler for spreading vermicide before operating in accordance with a preferred embodiment of the present invention
  • Fig. 2 is a view illustrating an operating state of a sprinkler in accordance with a preferred embodiment of the present invention.
  • Fig. 3 and 4 are views illustrating an elastic return member in accordance with preferred embodiments of the present invention.
  • Fig. 1 and 2 respectively illustrate a plane view of a state of a sprinkler before spreading vermicide in accordance with a preferred embodiment of the present invention and a plane view of a state of the sprinkler for spreading vermicide in accordance with a preferred embodiment of the present invention.
  • the reference numeral 1 indicates a pump, which sends vermicide from a storage tank 2 through the distribution pipe 3 by using a driving force of an engine like an engine of a tiller.
  • the distribution pipe 3 is arranged and disposed on the ground according to a side of crops.
  • a support pipe 5 of the sprinkler 4 is vertically connected on the distribution pipe 3 by inserting a lower portion connector 6 so as to be disposed like a T-shape.
  • a piston pipe 8 of a head portion 7 is inserted inside the support pipe 5 so that the piston pipe 8 can be moved upward and downward.
  • An injection nozzle 9 is disposed on an upper end of the piston pipe 8.
  • a screw socket 10 in which female screws 10a, 10b are formed is combined by a screw on a screw portion ⁇ a of an upper end of the support pipe 5.
  • a sealing member 11 and an O-ring 12 are prepared between the piston pipe 8 and the screw socket 10 so as to prevent leak of the insect pesticide.
  • the sealing member 11 formed with a rubber matter includes a taper lip lla, which a diameter of its lower portion is gradually decreased than a diameter of its upper portion.
  • the sealing member 11 is gradually closed and closely adhered to the piston pipe 8 when the hydraulic pressure is applied to a space portion between the support pipe 5 and the piston pipe 8. Therefore, the ascent speed of the piston pipe 8 is controlled. On the contrary, when the hydraulic pressure is removed and the piston pipe 8 is descended, the piston pipe 8 is quickly descended because the sealing member 11 is moved downward and is opened.
  • An ascent speed of the piston pipe 8 can be controlled by an sealing action between an O-ring cap 14 and the O-ring 12 when the piston pipe 8 is ascended because the O-ring 12 is supported by the O-ring cap 14 of a taper shape and a nut 15.
  • the piston pipe 8 is quickly descended because the O-ring 12 is moved downward and opened when the piston pipe 8 is descended.
  • An upper portion connector 16 for connecting the lower portion connector 6 and the injection nozzle 9 to the piston pipe 8 is connected by an elastic return member 17.
  • the elastic return member 17 is extended when the piston pipe 17 is ascended by hydraulic pressure and thereby the elastic force is accumulated. On the contrary, when hydraulic pressure is removed, the piston pipe 8 is pulled by the accumulated elastic force and thereby the piston pipe 8 is quickly descended. Accordingly, a rubber hose or a tension coil spring can be used in the elastic return member 17.
  • the reference numerals 18 and 19 (not described) indicate holes through which the mixed liquid of water and vermicide is passed.
  • the reference numerals 20 and 21 indicate respectively a tuck and a stopper member.
  • the reference numeral 22 indicates a straining net for straining alien matters from the mixed liquid of water and vermicide.
  • the mixed liquid of water and vermicide is sent from the storage tank 2 through the distribution pipe 3 when the pump 1 is driven.
  • the mixed liquid of water and vermicide flows inside the support pipe 5 through the lower portion connector 6 when the mixed liquid of water and vermicide is sent through the distribution pipe 3.
  • the mixed liquid of water and vermicide flowing inside the support pipe 5 is acted on the tuck 20 by the hydraulic pressure and it is reached to the upper portion of the piston pipe 8.
  • the mixed liquid of water and vermicide is passed through a narrow hole 19 and is spread by rotating the injection nozzle 9 of the upper portion when the mixed liquid of water and vermicide is reached to the upper portion connector 16.
  • the piston pipe 8 is ascended according to a guidance of the support pipe 5 because hydraulic pressure is greatly applied.
  • the mixed liquid of water and vermicide flows inside the space portion 13 and it is acted on the sealing member 11 through a gap between the tuck 20 and the piston pipe 8. Accordingly, the rubber lip lla of the sealing member 11 is closed and closely adhered on the outer circumference of the piston pipe 8. Therefore, a quick ascension of the piston pipe 8 by the strong hydraulic pressure can be prevented and the mixed liquid of water and vermicide can be evenly spread because the piston pipe 8 is gradually ascended by the sealing member 11. At this time, the ascent speed of the piston pipe 8 is also controlled by the sealing action between the O-ring 12 and O-ring cap 14.
  • the elastic return member 17 is extended when the head portion 7 is gradually ascended.
  • the head portion is ascended to the maximum ascent position that the tuck reaches to the stopper 21.
  • the head portion 7 is ascended to the proper position according to the height of crops.
  • the operation of the pump 1 is stopped after finishing the spread of the mixed liquid of water and vermicide.
  • the hydraulic pressure acted on the head portion 7 is removed when the operation of the pump 1 is stopped.
  • the head portion 7 is descended by the elastic force of the elastic return member 17. At this time, the amount of the mixed liquid of water and vermicide that is left in the head portion 7 is spread through the injection nozzle 9.
  • the head portion is quickly descended because the adherence state between the O-ring 12 and the piston pipe 8 or the sealing member 11 and the piston pipe 8 is opened when the head portion is descended by the gravity and the elastic force of the elastic return member 17.
  • the mixed liquid of water and vermicide can be evenly spread and efficiently prevent vermin thereby.
  • the sprinkler of the present invention includes the head portion 7 having the injection nozzle, which can spread the mixed liquid of water and vermicide by hydraulic pressure, the head portion 7 ascending so as to spread the mixed liquid of water and vermicide, the sealing member for preventing a quick ascension of the head portion generated by the strong hydraulic pressure, and the elastic return member for descending the head portion by the elastic force accumulated when the head portion is ascended.
  • the present invention has an advantage that the mixed liquid of water and vermicide can be evenly spread from a surface of leafage to a backside of leafage by the ascent and descent movement of the head portion. Therefore, the environmental pollution can be prevented and the cost for exterminating vermin can be decreased.

Landscapes

  • Catching Or Destruction (AREA)

Abstract

The present invention provides a sprinkler (4), which can evenly spread vermicide according to a movement of a head portion (7) having an injection nozzle (9) from a lower portion to an upper portion. To realize the object, the sprinkler (4) including a support pipe (5) on which is vertically connected and disposed to a distribution pipe (3) for sending vermicide from a pump (1); a piston pipe (8), which is moved toward an upper portion by a guidance of the support pipe (5) when hydraulic pressure is applied; a head portion (7) having an injection nozzle (9), which is disposed on a nose of the piston pipe (8) and spreads vermicide supplied through the piston pipe (8); and an elastic return member (17) for descending the head portion (7) when hydraulic pressure is removed by an elastic force, which is generated by an ascension of the head portion (7).

Description

A SPRINKLER FOR EXTERMINATING VERMIN OF CROPS
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a sprinkler, which can automatically move upward and downward by hydraulic pressure and spread vermicide.
Description of the Related Art
In the prior art, an automatic system for spreading vermicide, which can prevent damages by blight and harmful insects of crops has a structure that a taller pipe than crops is vertically disposed near crops and vermicide is spread through an injection nozzle applied on a nose of the pipe.
However, the sprinkler having the above structure has a problem that the spread vermicide is not reached to a backside of leaves and an inside of crops because the spread vermicide flows into the ground and wets only leafage of crops. Accordingly, the more amount than the proper amount of vermicide is spread on crops because vermicide is fallen on the ground by gravity so that the amount of vermicide is almost disappeared. Therefore, the prior sprinkler has a problem that can not efficiently prevent vermin and bring about the environmental pollution by the excessive amount of vermicide.
SUMMARY OF THE INVENTION
The present invention has been made in an effort to solve the above problems. It is an object of the present invention to provide a sprinkler which vermicide can be evenly spread on whole crops by an injection nozzle, which is ascended from an upper portion of crops to a lower portion of crops by a supplied own hydraulic pressure.
The present invention realizes the above object by the sprinkler for spreading vermicide sent from a pump including a support pipe on which is vertically connected and disposed to a distribution pipe for sending vermicide from a pump; a piston pipe, which is moved toward an upper portion by a guidance of the support pipe when hydraulic pressure is applied; a head portion having an injection nozzle, which is disposed on a nose of the piston pipe and spreads vermicide supplied through the piston pipe; and an elastic return member for descending the head portion when hydraulic pressure is removed by an elastic force, which is generated by an ascension of the head portion. BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate an embodiment of the invention, and, together with the description, serve to explain the principles of the invention :
Fig. 1 is a view illustrating a state of a sprinkler for spreading vermicide before operating in accordance with a preferred embodiment of the present invention;
Fig. 2 is a view illustrating an operating state of a sprinkler in accordance with a preferred embodiment of the present invention; and
Fig. 3 and 4 are views illustrating an elastic return member in accordance with preferred embodiments of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to Fig. 1 and 2, they respectively illustrate a plane view of a state of a sprinkler before spreading vermicide in accordance with a preferred embodiment of the present invention and a plane view of a state of the sprinkler for spreading vermicide in accordance with a preferred embodiment of the present invention. The reference numeral 1 indicates a pump, which sends vermicide from a storage tank 2 through the distribution pipe 3 by using a driving force of an engine like an engine of a tiller.
The distribution pipe 3 is arranged and disposed on the ground according to a side of crops. A support pipe 5 of the sprinkler 4 is vertically connected on the distribution pipe 3 by inserting a lower portion connector 6 so as to be disposed like a T-shape.
A piston pipe 8 of a head portion 7 is inserted inside the support pipe 5 so that the piston pipe 8 can be moved upward and downward. An injection nozzle 9 is disposed on an upper end of the piston pipe 8.
A screw socket 10 in which female screws 10a, 10b are formed is combined by a screw on a screw portion δa of an upper end of the support pipe 5. A sealing member 11 and an O-ring 12 are prepared between the piston pipe 8 and the screw socket 10 so as to prevent leak of the insect pesticide.
The sealing member 11 formed with a rubber matter includes a taper lip lla, which a diameter of its lower portion is gradually decreased than a diameter of its upper portion. The sealing member 11 is gradually closed and closely adhered to the piston pipe 8 when the hydraulic pressure is applied to a space portion between the support pipe 5 and the piston pipe 8. Therefore, the ascent speed of the piston pipe 8 is controlled. On the contrary, when the hydraulic pressure is removed and the piston pipe 8 is descended, the piston pipe 8 is quickly descended because the sealing member 11 is moved downward and is opened.
Similarly, An ascent speed of the piston pipe 8 can be controlled by an sealing action between an O-ring cap 14 and the O-ring 12 when the piston pipe 8 is ascended because the O-ring 12 is supported by the O-ring cap 14 of a taper shape and a nut 15. On the contrary, the piston pipe 8 is quickly descended because the O-ring 12 is moved downward and opened when the piston pipe 8 is descended.
An upper portion connector 16 for connecting the lower portion connector 6 and the injection nozzle 9 to the piston pipe 8 is connected by an elastic return member 17.
The elastic return member 17 is extended when the piston pipe 17 is ascended by hydraulic pressure and thereby the elastic force is accumulated. On the contrary, when hydraulic pressure is removed, the piston pipe 8 is pulled by the accumulated elastic force and thereby the piston pipe 8 is quickly descended. Accordingly, a rubber hose or a tension coil spring can be used in the elastic return member 17.
The reference numerals 18 and 19 (not described) indicate holes through which the mixed liquid of water and vermicide is passed. The reference numerals 20 and 21 indicate respectively a tuck and a stopper member. The reference numeral 22 indicates a straining net for straining alien matters from the mixed liquid of water and vermicide.
An operation of the present invention like the above is as follows.
The mixed liquid of water and vermicide is sent from the storage tank 2 through the distribution pipe 3 when the pump 1 is driven.
The mixed liquid of water and vermicide flows inside the support pipe 5 through the lower portion connector 6 when the mixed liquid of water and vermicide is sent through the distribution pipe 3.
The mixed liquid of water and vermicide flowing inside the support pipe 5 is acted on the tuck 20 by the hydraulic pressure and it is reached to the upper portion of the piston pipe 8. The mixed liquid of water and vermicide is passed through a narrow hole 19 and is spread by rotating the injection nozzle 9 of the upper portion when the mixed liquid of water and vermicide is reached to the upper portion connector 16.
At this time, the piston pipe 8 is ascended according to a guidance of the support pipe 5 because hydraulic pressure is greatly applied.
The mixed liquid of water and vermicide flows inside the space portion 13 and it is acted on the sealing member 11 through a gap between the tuck 20 and the piston pipe 8. Accordingly, the rubber lip lla of the sealing member 11 is closed and closely adhered on the outer circumference of the piston pipe 8. Therefore, a quick ascension of the piston pipe 8 by the strong hydraulic pressure can be prevented and the mixed liquid of water and vermicide can be evenly spread because the piston pipe 8 is gradually ascended by the sealing member 11. At this time, the ascent speed of the piston pipe 8 is also controlled by the sealing action between the O-ring 12 and O-ring cap 14.
The elastic return member 17 is extended when the head portion 7 is gradually ascended. The head portion is ascended to the maximum ascent position that the tuck reaches to the stopper 21.
The head portion 7 is ascended to the proper position according to the height of crops. The operation of the pump 1 is stopped after finishing the spread of the mixed liquid of water and vermicide.
The hydraulic pressure acted on the head portion 7 is removed when the operation of the pump 1 is stopped. The head portion 7 is descended by the elastic force of the elastic return member 17. At this time, the amount of the mixed liquid of water and vermicide that is left in the head portion 7 is spread through the injection nozzle 9.
In addition, the head portion is quickly descended because the adherence state between the O-ring 12 and the piston pipe 8 or the sealing member 11 and the piston pipe 8 is opened when the head portion is descended by the gravity and the elastic force of the elastic return member 17.
In addition, if the head portion 7 is repeatedly ascended and descended than the head portion 7 is ascended for once, the mixed liquid of water and vermicide can be evenly spread and efficiently prevent vermin thereby.
Like the above, the sprinkler of the present invention includes the head portion 7 having the injection nozzle, which can spread the mixed liquid of water and vermicide by hydraulic pressure, the head portion 7 ascending so as to spread the mixed liquid of water and vermicide, the sealing member for preventing a quick ascension of the head portion generated by the strong hydraulic pressure, and the elastic return member for descending the head portion by the elastic force accumulated when the head portion is ascended.
In addition, the present invention has an advantage that the mixed liquid of water and vermicide can be evenly spread from a surface of leafage to a backside of leafage by the ascent and descent movement of the head portion. Therefore, the environmental pollution can be prevented and the cost for exterminating vermin can be decreased.
While this invention has been described in connection with what is presently considered to be the most practical and preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiment is not limited to the disclosed embodiments, but, on the contrary, it is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

What is claimed is :
1. A sprinkler for spreading vermicide sent from a pump over crops comprising: a support pipe on which is vertically connected and disposed to a distribution pipe for sending vermicide from a pump; a piston pipe, which is moved toward an upper portion by a guidance of the support pipe when hydraulic pressure is applied; a head portion having an injection nozzle, which is disposed on a nose of the piston pipe and spreads vermicide supplied through the piston pipe; and an elastic return member for descending the head portion when hydraulic pressure is removed by an elastic force, which is generated by an ascension of the head portion.
2. The sprinkler according to claim 1, characterized in that the sealing member is prepared on the support pipe so as to prevent a leakage of a mixed liquid of water and vermicide through a gap between the support pipe and the piston pipe, and the sealing member is gradually closed and closely adhered to the piston pipe by a taper lip which a diameter of its lower portion is gradually decreased than a diameter of its upper portion so as to prevent a quick ascent of the piston pipe when the hydraulic pressure is applied.
3. The sprinkler according to claim 1, characterized in that the elastic return member is a rubber hose.
4. The sprinkler according to claim 1, characterized in that the elastic return member is a tension coil spring.
5. The sprinkler according to claim 1, characterized in that an O-ring is disposed so as to prevent leakage between the support pipe and the piston pipe, and an O-ring cap for supporting the O-ring is disposed for an sealing action when the piston pipe is ascended.
PCT/KR1996/000194 1995-11-06 1996-11-04 A sprinkler for exterminating vermin of crops WO1997016956A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU73419/96A AU7341996A (en) 1995-11-06 1996-11-04 A sprinkler for exterminating vermin of crops

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR19950032369 1995-11-06
KR1995/32369U 1995-11-06

Publications (1)

Publication Number Publication Date
WO1997016956A1 true WO1997016956A1 (en) 1997-05-15

Family

ID=19428173

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1996/000194 WO1997016956A1 (en) 1995-11-06 1996-11-04 A sprinkler for exterminating vermin of crops

Country Status (2)

Country Link
AU (1) AU7341996A (en)
WO (1) WO1997016956A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7627574B2 (en) 2004-12-16 2009-12-01 Oracle International Corporation Infrastructure for performing file operations by a database server
KR20230053985A (en) * 2021-10-15 2023-04-24 권태한 A device for springcooler

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1590650A (en) * 1978-05-31 1981-06-03 Lockinge Farm Enterprises Ltd Spray applicator
DE3512765A1 (en) * 1985-04-10 1986-10-16 Albrecht Bertsche, Maschinenvertrieb, Inhaber Alfred Bertsche, 7715 Bräunlingen Device for watering
EP0623278A1 (en) * 1993-05-04 1994-11-09 Schmidmeier Rainbow Bewässerungsservice Thomas Process and device for the continuous, adjusted and waste free irrigation of plants and cultures in rows

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1590650A (en) * 1978-05-31 1981-06-03 Lockinge Farm Enterprises Ltd Spray applicator
DE3512765A1 (en) * 1985-04-10 1986-10-16 Albrecht Bertsche, Maschinenvertrieb, Inhaber Alfred Bertsche, 7715 Bräunlingen Device for watering
EP0623278A1 (en) * 1993-05-04 1994-11-09 Schmidmeier Rainbow Bewässerungsservice Thomas Process and device for the continuous, adjusted and waste free irrigation of plants and cultures in rows

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7627574B2 (en) 2004-12-16 2009-12-01 Oracle International Corporation Infrastructure for performing file operations by a database server
KR20230053985A (en) * 2021-10-15 2023-04-24 권태한 A device for springcooler
KR102698435B1 (en) * 2021-10-15 2024-08-22 권태한 A device for springcooler

Also Published As

Publication number Publication date
AU7341996A (en) 1997-05-29

Similar Documents

Publication Publication Date Title
DE69512199T2 (en) Pump for dispensing distributed liquids
DE69609440T2 (en) Device for storing and dispensing a liquid or pasty product
EP0819476A3 (en) Pump trigger assembly for a trigger sprayer
DE2706221A1 (en) FASTENING DEVICE FOR PAINT SPRAY UNITS, CONSISTS OF SPRAY GUN AND PAINT CONTAINER
US6267303B1 (en) Sprinkler system fertilizer injector
WO1997016956A1 (en) A sprinkler for exterminating vermin of crops
CN213670098U (en) Buried automatic lifting spray head
CN204969081U (en) Air -blast atomizer
US4279300A (en) Treating fluid applicator
US20070246563A1 (en) Method for reducing drip from agricultural sprayer nozzles
US5174499A (en) Irrigation system
KR0177380B1 (en) Sprinkler
DE4332869C2 (en) Dosing pump
KR200209412Y1 (en) Piston Sprinklers for Crop Control
EP0089031B1 (en) Orifice valve for an ultrasonic liquid atomizer
EP1796847B1 (en) Adapter for the selective inverted actuation of pump dispensers
JP3256200B2 (en) Liquid sprayer
KR101715805B1 (en) Drain valve for sprinkler pipe
US4471570A (en) Recirculating wiper for agricultural chemicals
DE4129888C2 (en) Telescopic sprinkler
CN220571380U (en) Novel forestry insect pest prevention device
CN221488589U (en) Spray thrower adjusting bracket
CN110973096B (en) Pesticide shower nozzle for plant protection unmanned aerial vehicle
JP2002186369A (en) Liquid sprinkler
CA1189549A (en) Two step packing gland

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR CA CN HU IL JP KZ LK LT MX NZ PL RU US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 97518088

Format of ref document f/p: F

NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase