WO1994020756A1 - Forced compression type pump - Google Patents

Forced compression type pump Download PDF

Info

Publication number
WO1994020756A1
WO1994020756A1 PCT/JP1993/000253 JP9300253W WO9420756A1 WO 1994020756 A1 WO1994020756 A1 WO 1994020756A1 JP 9300253 W JP9300253 W JP 9300253W WO 9420756 A1 WO9420756 A1 WO 9420756A1
Authority
WO
WIPO (PCT)
Prior art keywords
pump case
pump
cylinder
eccentric
forced
Prior art date
Application number
PCT/JP1993/000253
Other languages
English (en)
French (fr)
Inventor
Hirokazu Yoshida
Original Assignee
Hirokazu Yoshida
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 Hirokazu Yoshida filed Critical Hirokazu Yoshida
Priority to AU35755/93A priority Critical patent/AU683012B2/en
Priority to AT93904368T priority patent/ATE187805T1/de
Priority to KR1019950703653A priority patent/KR960701304A/ko
Priority to PCT/JP1993/000253 priority patent/WO1994020756A1/ja
Priority to DE69327341T priority patent/DE69327341D1/de
Priority to EP93904368A priority patent/EP0695870B1/en
Publication of WO1994020756A1 publication Critical patent/WO1994020756A1/ja
Priority to US08/522,305 priority patent/US5609479A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/30—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C2/34—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members
    • F04C2/344—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C2/3441—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation
    • F04C2/3445—Rotary-piston machines or pumps having the characteristics covered by two or more groups F04C2/02, F04C2/08, F04C2/22, F04C2/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in groups F04C2/08 or F04C2/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation the vanes having the form of rollers, slippers or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/08—Rotary pistons
    • F01C21/0809—Construction of vanes or vane holders
    • F01C21/0818—Vane tracking; control therefor
    • F01C21/0827—Vane tracking; control therefor by mechanical means
    • F01C21/0836—Vane tracking; control therefor by mechanical means comprising guiding means, e.g. cams, rollers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2251/00—Material properties
    • F05C2251/02—Elasticity

Definitions

  • the present invention relates to a forced-compression pump including a cylindrical pump case, a rotating rotary member, and a compression / push member pressed against an inner wall of the pump case.
  • the above-mentioned forced-compression pump includes a cylindrical pump case A, a wound rotary body B mounted on an eccentric position IS with respect to the pump case A,
  • the rod-shaped roller 10 is movable in the radial direction of the pump case A and is in contact with the inner wall of the pump case A. With the rotation of the eccentric rotator B, the volume of the pressure is reduced as it approaches the outlet 2 from the inlet side 1 to pump gas and liquid.
  • an eccentric rotator has an inner space formed in the center thereof, and a plurality of guide grooves are formed radially from the inner space to the peripheral surface of the eccentric rotator.
  • a central cylindrical body inserted into the internal space of the main body, and a plurality of circumferential cylindrical bodies inserted in the guide grooves and movable in the radial direction.
  • the outer peripheral surface of the peripheral cylinder is pressed against the inner wall of the pump case and the inner peripheral surface of the peripheral cylinder is pressed against the center cylinder to compress and push the peripheral cylinder. Function as a member.
  • FIG. 1 is a vertical cross-sectional view of a forced-compression pump according to an embodiment of the present invention in a transverse direction in plan view
  • FIG. 2 is a cross-sectional view taken along a line SS in FIG.
  • FIG. 3 is a longitudinal sectional view of the forced pressure box pump in a longitudinal direction in plan view.
  • FIG. 4 is a pseudo sectional view similar to FIG. 1 of a known forced compression pump. BEST MODE FOR CARRYING OUT THE INVENTION
  • a bomb case having a cylindrical internal space in a longitudinal sectional view, a wound rotary body embedded in the front three cylindrical internal spaces tt mounted on the pump case at an eccentric position with respect to the pump case;
  • the construction of a forced-compression pump with a pressure box pushing material that is movable in the radial direction of the body and presses against the inner wall of the pump case is the same as the known forced-compression pump, but is not limited to the practice of the present invention.
  • An inner space 3 is formed at the center of the eccentric rotator B, and a plurality of guide grooves 4 are formed radially from the inner space 3 to the peripheral surface of the connecting rotator B.
  • a number of peripheral cylinders 5 are installed in the guide grooves 4, which are movable in the radial direction and are movable in the radial direction so that the axial direction is parallel to the center of the eccentric rotor B, and inserted into the internal space 3.
  • the center cylinder 6 is provided so as to be in contact with several cylinders 5 that are in contact with each other, and the outer peripheral surface of the peripheral cylinder 5 is pressed against the inner wall of the bomb case A, and the peripheral cylinder 5 is pressed into a pressure box.
  • the eccentric rotator is supported by the bearing 7 at an eccentric position with respect to the pump case A, and is driven to rotate by the boat drive IB 8.
  • the eccentric rotator B is at the eccentric position S with respect to the pump case A
  • the center cylinder ⁇ is located at the axis P 3 of the cylindrical internal space in the longitudinal sectional view of the pump case A.
  • reference numeral 9 denotes a 0 ring for sealing.
  • the amount of eccentric movement of the peripheral cylinder 5 is regulated by the guide of the eccentric rotation and the central cylinder, and the central cylinder and the peripheral cylinder come into rotational contact with a small speed difference.
  • the rotation of the revolving rotator B reduces the volume of the pumping chamber Q as it approaches the outlet ⁇ 2 from the inlet ⁇ 1 and pumps gas and liquid.
  • the inner wall surface of the pump case that comes into contact with the peripheral cylinder is made of a flexible material, the inner wall surface can be deformed in a thriller (transportation of fine particles), which is convenient.
  • the sealing effect on the internal space of the rotator B can be enhanced.
  • the diameter of the peripheral cylinder is made larger than the guide groove, it is forcibly deformed into a circular shape and the diameter of the peripheral cylinder is reduced, so that the sealing effect can be further improved.
  • the surrounding cylindrical body which can be filled as the pressure box pushing-out device of the forced compression type pump, constantly rotates and moves while being in contact with the inner wall of the pump case.
  • the circumferential cylinder functioning as the pusher and the inner wall of the pump case are always rotated iS friction, and the circumferential cylinder is restricted by the guide groove of the eccentric rotation 1 ⁇ and the center cylinder by the center movement S. Since the rotation of the center cylinder and the peripheral cylinder is performed with a small speed difference, the wear on the inner wall of the pump case and the compression / pushing material is significantly reduced. This facilitates maintenance of the pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Description

明細 «
強制圧縮型ポンプ 技術分野
本願発明は、 円筒形状のポンプケースと、儷心回転体と、 ポンプケースの 内壁と圧接する圧縮押送部材とを含む、強制圧縮型ポンプに関するものであ る。 背《技術
この種の強制圧接型ポンプとしては、 実公昭 5 5— 1 8 5 4 2号 Γ液体兼 気体の独制圧港型ポンプ Jか'公知である。
上記の強制圧縮型ポンプは、第 4図を参照して、 円筒形状のポンプケース Aと、該ポンプケース Aに対する偏心位 ISに軸架された傷心回転体 Bと、該 僵心 0耘体 Bの放射方向に移動自在でポンプケース Aの内壁と圧接する庄 «I 押送都材 Cとを含み、圧縮押送都材 Cは傷心回 ¾体 Bの放射方向に移動自在 である杆状ローラ 1 0で構成し、 偏心回転体 Bの回転により圧 の容積 を入口側 1より出口倔 2に接近するに従って綰小して気体、液体を圧送する ようになつている。
上記の公知の強制圧縮塑ポンプにおいては、 ローラトローラ支持面とのス ピード差が大きいため、摩耗か大きい問題点がある。 発明の開示
本発 ¾は、偏心回転体に、 その中心部に内部空間を形成するとともに、該 内部空間より偃心回転体の周面へ放射方向に複数個のガイド溝を形成し、前 記偏心面^の内部空間に挿入された中心筒体と、前記ガイド溝に挿入され て放射方向へ移動自在な複数個の周接筒体とを設けて、榷数個の周接筒体を 中心筒体に対し遊星関係位置とし、 周接筒体の外周側の周面をポンプケース の内壁と圧接させ周接筒体の内心側の周面を中心筒体と圧接させて、 周接筒 体を圧縮押送部材として機能させる。 P T/JP / 5
図面の簡単な説明
第 1図は、本願発明の実施例を示す強制圧縮型ポンプの平面視横断方向の 縦断面図であり、第 2図は、第 1図 S— S»による断面図である。
第 3図は、強制圧箱型ポンプの平面視長手方向の縦断面図である。
第 4図は、公知の強制圧縮型ポンプの第 1図同様の擬断面図である。 発明を実施するための最良の形抵
以下、第 1図乃至第 3図に示す実施例にもとづいて、本発明を詳細に説明 する。
縦断面視で円筒形状の内部空間を有するボンブケースと、該ポンプケース に対する偏心位置でポンプケースに tt架された前3円筒形状の内部空間に内 装された傷心回転体と、該僵心回転体の放射方向に移動自在でポンプケース の内壁と圧接する圧箱押送都材とで強制圧縮型ボンプを構成することは、公 知の強制圧縮型ポンプと同様であるが、本発明の実施にあたり、偏心回転体 Bの中心部に内部空間 3を形成するとともに、該内部空間 3より儡心回転体 Bの周面へ放射方向に複数個のガイド溝 4を形成する。該ガイド溝 4に搏入 されて放射方向へ移動自在で軸心方向を偏心回転体 Bの轴心と平行に位置す る祓数個の周接筒体 5を設け、前記内部空間 3に挿入されて接数個の筒体 5 と周接する中心筒体 6を設け、周接筒体 5の外周側の周面をボンブケース A の内壁と圧接させ、周接筒体 5を圧箱押送 ¾mcとして機能させる。
なお、前 33偏心回転体 Bに形成される放射方向の褸数個のガイド潸 4は、 第 1図を参照して、儸心囬転体 Bの軸心 P 1と周接筒体 5の軸心 P2とをとお る線 Z 1に対し、ガイド溝 4の壁面 4 aの延長線 Z2とを平行とする，
懂心回転体 ま、 ¾受 7により、 ポンプケース Aに対し偏心位置で軸架さ れ、艇動装 IB 8により回転駆動され、偏心回転体 Bはポンプケース Aに対し 偏心位 Sにあるが、 中心筒体 βほポンプケース Aの縱断面視で円筒形状の内 部空間の軸心 P 3に位 fiする。第 3図において、 9はシール用の 0リングで ある。 價心面転体 Bの回転に際し、周接筒体 5および中心筒体 6は、常時回おす る。その結果、离接筒体 5の内心側の周面は中心筒体 6と回転しつつ圧接し 、周接筒体 5の外周面の周面は、ポンプケース Aの内壁と回転しつつ圧接し て、ポンプケース Aの内壁と周接筒体 5とは常に回転摩擦となる ·
周接筒体 5は偏心回¾«：のガイド と中心筒体とでその偏心移動量が規 制され中心筒体と周接筒体とは少ない速度差で回転接触する。
信心回転体 Bの回転により圧送室 Qの容種を、入口侧 1より出口佣 2に接 近するに従って縮小して気体、液体を圧送する。
ポンプケースの少なくとも周接筒体と接触する内壁面を弹性部材で製作す ると、 スリラー (微粒物の搬送〉にあたり、 内壁面を変形できて好都合 である。
周接筒体を弾性部材で製作するか、周接筒体を円筒形状とし弾性変形を自 在とすると、僵心回転体 Bの内部空間に対するシール効果を高めることがで きて、 この場合に、周接筒体の直径をガイド溝に対し大とすると、強制的に 榷円形に変形させて周接筒体の直径を綰小することとなってシール効果をよ り ¾めることができる。 産業上の利用可 Igft
以上のように、本発明にかかる強制圧縮型ポンプは、強制圧縮型ボンプの 圧箱押送 ¾¾ίとして埋能する周接筒体は常に回転しつつポンプケース内壁と 接触して移動することで、圧縮押送∞として機能する周接筒体とポンプケ ースの内壁とは常に回 iS¾擦となり、 また、周接筒体は偏心回1^のガイド 溝と中心筒体とでその儸心移動 Sが規制され中心筒体と周接筒体とほ少ない 速度差で回転接勉するので、 ポンプケース内壁および圧縮押送都材のほ耗は 顕著に減少する結果、強制圧縮型ポンプの機能を半永久的に雑持しポンプの 保守を容易にするものである。

Claims

請求の範囲
1 . 円筒形状のポンプケースと、該ポンプケースに対する偏心位置でポンプ ケースに軸架された傷心回お体と、該偏心回転体の放射方向に移動自在で ボンブケースの内壁と圧接する圧 送^とを含む強制圧縮型ポンプに おいて、
前記漏心回 l¾fに、 その中心部に内部空間を形成するとともに、該内部 空間より偏心回転体の周面へ放射方向に複数個のガイド溝を形成し、 前記偏心回転体の内都空間に撺人された中心筒体と、前 ffiガイド溝に挿 入されて放射方向へ移動自在な複数個の周接筒体とを設けて、複数個の周 接筒体を中心筒体に対し遊星関係位 とし、周接筒体の外周側の周面をボ ンプケースの内壁と庄接させ周接筒体の内心僳の周面を中心简体と圧接さ せて、周接筒体を圧 «s}送 a¾として作用させたことを特徴とする 3虔制圧 縮型ポンプ *
2 , ポンプケースの少なくとも周接筒体と接触する内壁面を弾性部材で製作 したことを特徴とする請求の範囲第 1項き Bttの強制圧縮型ポンプ
3， 周接筒体を弾性部材で製作したことを特徴とする請求の範囲第 1項記載 の強制压箱型ボンブ
4 .周接筒体を円筒形状とレ弹性変形を自在としたことを特徴とする請求の 範囲第 1項の強制圧縮型ポンプ
PCT/JP1993/000253 1993-03-01 1993-03-01 Forced compression type pump WO1994020756A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
AU35755/93A AU683012B2 (en) 1993-03-01 1993-03-01 Forced compression type pump
AT93904368T ATE187805T1 (de) 1993-03-01 1993-03-01 Verstärkte kompressortyp-pumpe
KR1019950703653A KR960701304A (ko) 1993-03-01 1993-03-01 강제압축형 펌프(Forced compression type pump)
PCT/JP1993/000253 WO1994020756A1 (en) 1993-03-01 1993-03-01 Forced compression type pump
DE69327341T DE69327341D1 (de) 1993-03-01 1993-03-01 Verstärkte kompressortyp-pumpe
EP93904368A EP0695870B1 (en) 1993-03-01 1993-03-01 Forced compression type pump
US08/522,305 US5609479A (en) 1993-03-01 1995-08-30 Forced compression type pump

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/JP1993/000253 WO1994020756A1 (en) 1993-03-01 1993-03-01 Forced compression type pump
US08/522,305 US5609479A (en) 1993-03-01 1995-08-30 Forced compression type pump

Publications (1)

Publication Number Publication Date
WO1994020756A1 true WO1994020756A1 (en) 1994-09-15

Family

ID=26434378

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1993/000253 WO1994020756A1 (en) 1993-03-01 1993-03-01 Forced compression type pump

Country Status (3)

Country Link
US (1) US5609479A (ja)
EP (1) EP0695870B1 (ja)
WO (1) WO1994020756A1 (ja)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047516B4 (de) * 2008-09-12 2010-11-25 Hüttlin, Herbert, Dr. h.c. Pumpe
CN101864991A (zh) * 2010-06-10 2010-10-20 姚镇 星旋式流体马达或发动机和压缩机及泵

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3315565Y1 (ja) * 1956-12-21 1958-09-20
JPS371475Y1 (ja) * 1959-10-14 1962-02-07
JPS52246B1 (ja) * 1970-08-21 1977-01-06
JPS59190490A (ja) * 1983-04-12 1984-10-29 Nippon Seiko Kk ベ−ンポンプ
JPH01158586U (ja) * 1988-04-18 1989-11-01
US4958992A (en) * 1986-10-27 1990-09-25 Notron Engineering Variable capacity swivelling vane pump

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB599085A (en) * 1945-06-15 1948-03-04 Frank Horton Improvements in and relating to rotary pumps or meters
DE186489C (ja) *
CA452935A (en) * 1948-11-30 Edison Edouard Jessop Robert Rotary pump
US1265070A (en) * 1915-04-07 1918-05-07 Peters Machine & Mfg Company Pump.
US1700038A (en) * 1927-03-12 1929-01-22 James Aratoon Malcolm Rotary engine, pump, meter, and the like
US1762418A (en) * 1928-12-05 1930-06-10 Petersen Henry Rotary force pump
US1974122A (en) * 1930-02-26 1934-09-18 Herbert Playford Sheppard Rotary engine motor, compressor, and the like
US2068570A (en) * 1933-09-14 1937-01-19 Gen Electric Rotary pump
US2036711A (en) * 1934-04-21 1936-04-07 Charles E Wisner Rotary pump
GB474231A (en) * 1936-03-27 1937-10-27 Fluvario Ltd Improvements in or relating to rotary engines
US2484993A (en) * 1946-06-04 1949-10-18 Gruber Milan Rotary pump
US2586964A (en) * 1946-09-24 1952-02-26 Jr Frederick Kraissl Rotary pump
US2520724A (en) * 1947-07-11 1950-08-29 Jessop Robert Edison Edouard Rotary roller pump
GB654808A (en) * 1948-11-23 1951-06-27 Alfred George Langdon Improvements in or relating to rotary circulating pumps
US2988003A (en) * 1960-07-01 1961-06-13 Joseph M Schmied Pump construction
GB1023629A (en) * 1964-02-27 1966-03-23 Ustav Pro Vyzkum Motorovych Vo Rotary internal combustion engine or compressor
US3870437A (en) * 1972-06-29 1975-03-11 John T Gondek Planetary gear pump
GB1539251A (en) * 1975-06-16 1979-01-31 Rohm & Haas Thiophosphoric acid esters
JPS5692385A (en) * 1979-12-26 1981-07-27 Automob Antipollut & Saf Res Center Rotary machine
US4385874A (en) * 1980-05-01 1983-05-31 Savoie Jr Hilbert J Rotary pump apparatus with plural abutting pumping segments
JPH01158586A (ja) * 1987-12-15 1989-06-21 Nec Corp Ｉｃカード

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3315565Y1 (ja) * 1956-12-21 1958-09-20
JPS371475Y1 (ja) * 1959-10-14 1962-02-07
JPS52246B1 (ja) * 1970-08-21 1977-01-06
JPS59190490A (ja) * 1983-04-12 1984-10-29 Nippon Seiko Kk ベ−ンポンプ
US4958992A (en) * 1986-10-27 1990-09-25 Notron Engineering Variable capacity swivelling vane pump
JPH01158586U (ja) * 1988-04-18 1989-11-01

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0695870A4 *

Also Published As

Publication number Publication date
EP0695870A4 (en) 1996-04-03
US5609479A (en) 1997-03-11
EP0695870A1 (en) 1996-02-07
EP0695870B1 (en) 1999-12-15

Similar Documents

Publication Publication Date Title
JPS5941034B2 (ja) 流体ポンプ
US5011386A (en) Rotary positive displacement machine for incompressible media
US4113409A (en) Hose pump with friction drive of hollow, resilient roller means
WO1994020756A1 (en) Forced compression type pump
US4214855A (en) Peristaltic type pump
EP0376049B1 (en) Fluid compressor
CN1106494C (zh) 旋转式活塞发动机
KR930009733B1 (ko) 유체 압축기
KR0121938B1 (ko) 유체압축기
JPS5996493A (ja) 回転式流体機械
US4082485A (en) Rotary vane-type pump
RU2117822C1 (ru) Диафрагменный насос
RU2146338C1 (ru) Роторно-пластинчатая машина
JPH06185472A (ja) 強制圧縮型ポンプ
JPH0732952Y2 (ja) 流体圧縮機
JP2588911Y2 (ja) 回転式圧縮機
CN110131161B (zh) 一种滚动式滑片泵转子
JPH01130079A (ja) 回転ポンプ
EP0901563B1 (en) Fluid vane motor/pump
HU211413B (en) Rotary membran pump for passing fluids and gases
JPH0219683A (ja) 流体圧縮機
CN100473835C (zh) 偏心泵及偏心泵的应用
JPH0396681A (ja) 流体圧縮機
RU2222712C1 (ru) Диафрагменный насос
RU2127830C1 (ru) Компрессор для агрессивных сред

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU CA KR US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES 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
WWE Wipo information: entry into national phase

Ref document number: 2157267

Country of ref document: CA

Ref document number: 1993904368

Country of ref document: EP

Ref document number: 08522305

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 1993904368

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: 1993904368

Country of ref document: EP