JP4646529B2 - Restraint prevention structure for submersible centrifugal pump - Google Patents

Restraint prevention structure for submersible centrifugal pump Download PDF

Info

Publication number
JP4646529B2
JP4646529B2 JP2004049930A JP2004049930A JP4646529B2 JP 4646529 B2 JP4646529 B2 JP 4646529B2 JP 2004049930 A JP2004049930 A JP 2004049930A JP 2004049930 A JP2004049930 A JP 2004049930A JP 4646529 B2 JP4646529 B2 JP 4646529B2
Authority
JP
Japan
Prior art keywords
impeller
pump casing
peripheral surface
centrifugal pump
outer peripheral
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.)
Expired - Lifetime
Application number
JP2004049930A
Other languages
Japanese (ja)
Other versions
JP2005240628A (en
Inventor
純子 櫻井
正彦 福田
啓久 木村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tsurumi Manufacturing Co Ltd
Original Assignee
Tsurumi Manufacturing Co Ltd
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 Tsurumi Manufacturing Co Ltd filed Critical Tsurumi Manufacturing Co Ltd
Priority to JP2004049930A priority Critical patent/JP4646529B2/en
Publication of JP2005240628A publication Critical patent/JP2005240628A/en
Application granted granted Critical
Publication of JP4646529B2 publication Critical patent/JP4646529B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Landscapes

  • Structures Of Non-Positive Displacement Pumps (AREA)

Description

本発明は、水中遠心ポンプの拘束防止構造に関するものである。   The present invention relates to a restraining prevention structure for a submersible centrifugal pump.

周知のように、水中遠心ポンプでは高揚程化等に伴い、ポンプケーシング内周面と羽根車外周との間に形成される環状間隙（側方クリアランス）が狭められた構造となっている（例えば、特許文献１および２参照。）。しかし、高揚程化等に対応させて側方クリアランスを狭くすれば、汚水中では異物の噛み込みによる羽根車拘束（ロック）事故が問題となる。また、異物の噛み込みを生じさせないため側方クリアランスを大きくすれば、高揚程ポンプとしての揚液の高所或いは長距離移送機能が損われることになる。
特開２０００−１７９４８９号公報 （第１−４図） 特開２００２−２１７６９号公報 （第１図） As is well known, submersible centrifugal pumps have a structure in which an annular gap (side clearance) formed between the inner peripheral surface of the pump casing and the outer periphery of the impeller is narrowed with an increase in head height (for example, And Patent Documents 1 and 2.). However, if the side clearance is made narrower in response to an increase in the head height or the like, an impeller restraint (lock) accident due to the biting of foreign matter becomes a problem in sewage. Further, if the lateral clearance is increased in order not to cause foreign matter to be caught, the height of the pumped liquid or the long distance transfer function as a high head pump is impaired.
JP 2000-179489 A (Fig. 1-4) Japanese Patent Laid-Open No. 2002-21769 (FIG. 1)

解決しようとする課題は、高揚程ポンプとしての揚液の高所或いは長距離移送機能を損うことなく、しかも汚水中における異物の噛み込みを生じさせることのない、水中遠心ポンプの拘束防止構造を提供することである。   The problem to be solved is a structure for preventing restraint of a submersible centrifugal pump that does not impair the height or long-distance transfer function of the pumped liquid as a high-lift pump and does not cause foreign matter to be caught in sewage. Is to provide.

本発明では、ポンプケーシングに内装される、下端面が開放状態の羽根板がシュラウドの下面に植設され、該羽根板の下端面が該ポンプケーシング内の底面と狭い間隙で対向するように形成された羽根車と、同心状に形成された該ポンプケーシングの内周面と羽根車の外周面との間に形成される環状間隙（側方クリアランス）が、上方部で狭く下方部で広く形成されていることを、最も主要な特徴とする。 In the present invention, a vane plate , which is built in the pump casing and has a lower end surface open, is planted on the lower surface of the shroud, and the lower end surface of the vane plate is formed to face the bottom surface in the pump casing with a narrow gap. An annular gap (side clearance) formed between the impeller and the concentrically formed inner peripheral surface of the pump casing and the outer peripheral surface of the impeller is narrow at the upper portion and wide at the lower portion. The main feature is that

本発明によれば、ポンプケーシング内へ吸込まれた揚液中の異物は、環状間隙下方部の広い間隙へ逃がされるため、異物の噛み込みによる羽根車の拘束（ロック）事故を起すことがなく、ポンプ揚送停止時において沈降した異物が環状間隙の下方部へ堆積しても、該環状間隙の下方部は前述のように広い間隙に形成されているので、再起動時の拘束事故を防止できるという利点がある。また、環状間隙の上方部は狭い間隙に形成されているため、高揚程ポンプとしての揚液の高所或いは長距離移送機能が損われることはない。   According to the present invention, the foreign matter in the pumped liquid sucked into the pump casing is released to the wide gap below the annular gap, so that the impeller restraint (lock) accident due to the biting of the foreign matter does not occur. Even if foreign matter settled down when pumping is stopped accumulates in the lower part of the annular gap, the lower part of the annular gap is formed as a wide gap as described above, preventing a restraint accident at the time of restart. There is an advantage that you can. Moreover, since the upper part of the annular gap is formed in a narrow gap, the height of the pumped liquid or the long distance transfer function as a high head pump is not impaired.

ポンプケーシングに内装される、下端面が開放状態の羽根板がシュラウドの下面に植設され、該羽根板の下端面が該ポンプケーシング内の底面と狭い間隙で対向するように形成された羽根車と同心状に形成された該ポンプケーシングにおいて、該ポンプケーシングの内周面が、上方部よりも下方部で大径に形成され、且つ、羽根車の外周面上方部が、ポンプケーシングの内周面上方部と狭い間隙を保って対向するよう大径に形成され、羽根車の外周面下方部が、ポンプケーシングの内周面下方部との間に広い間隙を保って対向するよう小径に形成されると共に、該羽根車の羽根板は、先端部の肉厚を薄くし該先端部における外周長さが短くなるよう構成する。 An impeller formed in a pump casing , in which a vane plate having an open lower end surface is planted on a lower surface of the shroud, and the lower end surface of the vane plate faces a bottom surface in the pump casing with a narrow gap. In the pump casing formed concentrically with the inner periphery of the pump casing, the inner peripheral surface of the pump casing is formed to have a larger diameter at the lower part than the upper part, and the upper part of the outer peripheral surface of the impeller is the inner periphery of the pump casing. It is formed with a large diameter so as to oppose the upper part of the surface with a narrow gap, and the lower part of the outer peripheral surface of the impeller is formed with a small diameter so as to face with a lower part of the inner peripheral surface of the pump casing. In addition , the impeller blade plate is configured such that the thickness of the tip portion is reduced and the outer peripheral length of the tip portion is shortened .

図１において、１はポンプケーシングであり、内装される下端面が開放状態の羽根板５・・５がシュラウド３の下面に植設され、羽根板５・・５の下端面がポンプケーシング１内の底面と狭い間隙で対向するように形成された羽根車２と、同心状に形成されたポンプケーシング１内周面を有している。羽根車２は外周面が、上方部よりも下方部で小径に形成され、ポンプケーシング１の内周面との間に形成される環状間隙（側方クリアランス）の下方部で広い間隙４ａとなり上方部で狭い間隙４ｂとなっている。６はポンプケーシング１の下壁中央に開設された吸込口、７はポンプケーシング１の側壁の一側部に開設された吐出口である。この構造により、ポンプ揚送時において、吸込口６からポンプケーシング１内へ吸込まれた揚液中の異物は、環状間隙下方部の広い間隙４ａへ逃がされるため、異物の噛み込みによる羽根車２の拘束（ロック）事故を起すことなくポンプケーシング１内を一巡して吐出口７から揚液と共に揚送される。また、ポンプ揚送停止時において沈降した異物が環状間隙の下方部へ堆積しても、該環状間隙の下方部は前述のように広い間隙４ａに形成されているので、再起動時の拘束事故を防止できる。そして、環状間隙の上方部は狭い間隙４ｂに形成されているため、高揚程ポンプとしての揚液の高所或いは長距離移送機能が損われることもない。
In FIG. 1, reference numeral 1 denotes a pump casing, and a blade plate 5... 5 with an open lower end surface is planted on the lower surface of the shroud 3, and a lower end surface of the blade plate 5. And an impeller 2 formed so as to face the bottom surface of the pump casing 1 with a narrow gap, and an inner peripheral surface of the pump casing 1 formed concentrically. The impeller 2 is formed such that the outer peripheral surface has a smaller diameter at the lower part than the upper part and becomes a wide gap 4a at the lower part of the annular gap (side clearance) formed between the inner peripheral surface of the pump casing 1 and the upper part. The gap 4b is narrow at the part. 6 is a suction port established in the center of the lower wall of the pump casing 1, and 7 is a discharge port established on one side of the side wall of the pump casing 1. With this structure, foreign matter in the pumped liquid sucked into the pump casing 1 from the suction port 6 during pumping is released to the wide gap 4a at the lower part of the annular gap, and therefore the impeller 2 due to the biting of foreign matter. The pump casing 1 travels around the pump casing 1 without pumping (locking) accident and is pumped together with the pumped liquid. Even if foreign matter that has settled down when pumping is stopped accumulates in the lower part of the annular gap, the lower part of the annular gap is formed in the wide gap 4a as described above. Can be prevented. Since the upper portion of the annular gap is formed in the narrow gap 4b, the height of the pumped liquid or the long-distance transfer function as a high head pump is not impaired.

図２において、１はポンプケーシングであり、内装される羽根車２と同心状に形成された内周面が、上方部よりも下方部で大径に形成され、羽根車２の外周面との間に形成される環状間隙（側方クリアランス）の下方部で広い間隙４ａとなり上方部で狭い間隙４ｂとなっている。５・・５は羽根板、６はポンプケーシング１の下壁中央に開設された吸込口、７はポンプケーシング１の側壁の一側部に開設された吐出口である。この構造により、ポンプ揚送時において、吸込口６からポンプケーシング１内へ吸込まれた揚液中の異物は、環状間隙下方部の広い間隙４ａへ逃がされるため、異物の噛み込みによる羽根車２の拘束（ロック）事故を起すことなくポンプケーシング１内を一巡して吐出口７から揚液と共に揚送される。また、ポンプ揚送停止時において沈降した異物が環状間隙の下方部へ堆積しても、該環状間隙の下方部は前述のように広い間隙４ａに形成されているので、再起動時の拘束事故を防止できる。   In FIG. 2, reference numeral 1 denotes a pump casing, and an inner peripheral surface formed concentrically with the impeller 2 to be installed is formed to have a larger diameter at a lower portion than an upper portion, and the outer peripheral surface of the impeller 2 is A wide gap 4a is formed at a lower portion of an annular gap (side clearance) formed therebetween, and a narrow gap 4b is formed at an upper portion. 5 and 5 are blades, 6 is a suction port opened in the center of the lower wall of the pump casing 1, and 7 is a discharge port opened on one side of the side wall of the pump casing 1. With this structure, foreign matter in the pumped liquid sucked into the pump casing 1 from the suction port 6 during pumping is released to the wide gap 4a at the lower part of the annular gap, and therefore the impeller 2 due to the biting of foreign matter. The pump casing 1 travels around the pump casing 1 without pumping (locking) accident and is pumped together with the pumped liquid. Even if foreign matter that has settled down when pumping is stopped accumulates in the lower part of the annular gap, the lower part of the annular gap is formed in the wide gap 4a as described above. Can be prevented.

図３において、１はポンプケーシングであり、内装される羽根車２と同心状に形成された内周面が、上方部よりも下方部で大径に形成されている。羽根車２の外周面は、上方部よりも下方部で小径に形成されており、該羽根車２の外周面と前記ポンプケーシング１の内周面との対向面間に形成される環状間隙（側方クリアランス）は、下方部で広い間隙４ａとなり、上方部で狭い間隙４ｂとなっている。この構造により、ポンプ揚送時において、吸込口６からポンプケーシング１内へ吸込まれた揚液中の異物は、環状間隙下方部の広い間隙４ａへ逃がされるため、異物の噛み込みによる羽根車２の拘束（ロック）事故を起すこなくポンプケーシング１内を一巡して吐出口７から揚液と共に揚送される。また、ポンプ揚送停止時において沈降した異物が環状間隙の下方部へ堆積しても、該環状間隙の下方部は前述のように広い間隙４ａに形成されているので、再起動時の拘束事故を防止できる。そして、環状間隙の上方部は狭い間隙４ｂに形成されているため、高揚程ポンプとしての揚液の高所或いは長距離移送機能が損われることもない。   In FIG. 3, 1 is a pump casing, and the inner peripheral surface formed concentrically with the impeller 2 to be installed is formed in a larger diameter in the lower part than in the upper part. The outer peripheral surface of the impeller 2 is formed to have a smaller diameter at the lower portion than the upper portion, and an annular gap (between the opposing surfaces of the outer peripheral surface of the impeller 2 and the inner peripheral surface of the pump casing 1 ( The side clearance is a wide gap 4a at the lower part and a narrow gap 4b at the upper part. With this structure, foreign matter in the pumped liquid sucked into the pump casing 1 from the suction port 6 during pumping is released to the wide gap 4a at the lower part of the annular gap, and therefore the impeller 2 due to the biting of foreign matter. The pump casing 1 travels around the pump casing 1 without causing a locking (locking) accident. Even if foreign matter that has settled down when pumping is stopped accumulates in the lower part of the annular gap, the lower part of the annular gap is formed in the wide gap 4a as described above. Can be prevented. And since the upper part of the annular gap is formed in the narrow gap 4b, the height of the pumped liquid or the long distance transfer function as a high head pump is not impaired.

図１ないし図３の構成を前提として、羽根車２の羽根板５・・５は図４に示すよう、先端部５ｅの肉厚を薄くし該先端部５ｅにおける外周長さ５ａが可能な限り短くなるよう構成する。この構造により、異物は羽根板５・・５の回転後方側へ逃がされることになり、実施例１ないし３における広い間隙４ａの存在とが相俟って、異物の噛み込みによる羽根車２の拘束（ロック）事故防止効果が一層高められる。また、狭い間隙４ｂの存在により、高揚程ポンプとしての揚液の高所或いは長距離移送が有効に機能することになる。   Assuming the configuration of FIGS. 1 to 3, the blades 5... 5 of the impeller 2 are made thin as shown in FIG. 4 so that the distal end portion 5 e is thin and the outer peripheral length 5 a is as long as possible. Configure to be shorter. With this structure, the foreign matter is released to the rotational rear side of the blades 5.. 5, and the presence of the wide gap 4 a in the first to third embodiments is combined with the impeller 2 due to the biting of the foreign matter. The restraint (lock) accident prevention effect is further enhanced. In addition, due to the presence of the narrow gap 4b, the height or long distance transfer of the pumped liquid as the high head pump functions effectively.

本発明構造を備えた水中遠心ポンプの要部縦断側面図であって、羽根車外周面の下方部が上方部よりも小径に形成されている事例を示す。It is a principal part vertical side view of the submersible centrifugal pump provided with the structure of this invention, Comprising: The lower part of an impeller outer peripheral surface is shown in the example smaller diameter than an upper part. 本発明構造を備えた水中遠心ポンプの要部縦断側面図であって、ポンプケーシング内周面の下方部が上方部よりも大径に形成されている事例を示す。It is a principal part vertical side view of the submersible centrifugal pump provided with the structure of this invention, Comprising: The lower part of a pump casing internal peripheral surface is shown in the example larger diameter than an upper part. 本発明構造を備えた水中遠心ポンプの要部縦断側面図であって、ポンプケーシング内周面の下方部が上方部よりも大径に形成され、羽根車外周面の下方部が上方部よりも小径に形成されている事例を示す。It is a principal part vertical side view of the submersible centrifugal pump provided with the structure of the present invention, wherein the lower part of the inner peripheral surface of the pump casing is formed with a larger diameter than the upper part, and the lower part of the outer peripheral surface of the impeller is higher than the upper part. An example of a small diameter is shown. 本発明構造における羽根車の要部底面図である。It is a principal part bottom view of the impeller in a structure of this invention.

符号の説明Explanation of symbols

１ ポンプケーシング
２ 羽根車
４ａ 広い間隙
４ｂ 狭い間隙
５ 羽根板
５ａ 外周長さ
５ｅ 羽根板先端部 DESCRIPTION OF SYMBOLS 1 Pump casing 2 Impeller 4a Wide gap 4b Narrow gap 5 Blade plate 5a Perimeter length 5e Blade plate tip

Claims (5)

ポンプケーシングに内装される、下端面が開放状態の羽根板がシュラウドの下面に植設され、該羽根板の下端面が該ポンプケーシング内の底面と狭い間隙で対向するように形成された羽根車と、同心状に形成された該ポンプケーシングの内周面と、前記羽根車の外周面との間に形成される環状間隙（側方クリアランス）が、上方部で狭く下方部で広く形成されていることを特徴とする、水中遠心ポンプの拘束防止構造。 An impeller formed in a pump casing, in which a vane plate having an open lower end surface is planted on a lower surface of the shroud, and the lower end surface of the vane plate faces a bottom surface in the pump casing with a narrow gap. When the inner peripheral surface of the pump casing which is formed concentrically, annular gap formed between the outer peripheral surface of the impeller (the side clearance) is formed wider at the narrower lower portion in the upper portion A structure for preventing restraint of a submersible centrifugal pump. 羽根車の外周面が、上方部よりも下方部で小径に形成されていることを特徴とする、請求項１記載の水中遠心ポンプの拘束防止構造。 2. The structure for preventing restraint of an underwater centrifugal pump according to claim 1, wherein the outer peripheral surface of the impeller is formed with a smaller diameter in the lower part than in the upper part. ポンプケーシングの内周面が、上方部よりも下方部で大径に形成されていることを特徴とする、請求項１記載の水中遠心ポンプの拘束防止構造。 2. The structure for preventing restraint of a submersible centrifugal pump according to claim 1, wherein the inner peripheral surface of the pump casing is formed to have a larger diameter in the lower part than in the upper part. ポンプケーシングの内周面が、上方部よりも下方部で大径に形成され、且つ、羽根車の外周面が、上方部よりも下方部で小径に形成されていることを特徴とする、請求項１記載の水中遠心ポンプの拘束防止構造。 The inner peripheral surface of the pump casing is formed with a larger diameter at the lower portion than the upper portion, and the outer peripheral surface of the impeller is formed with a smaller diameter at the lower portion than the upper portion. Item 2. A structure for preventing restraint of a submersible centrifugal pump according to Item 1. 羽根車の羽根板は、先端部の肉厚を薄くし該先端部における外周長さが短くなるよう構成したことを特徴とする、請求項１ないし４のいずれか１項に記載の水中遠心ポンプの拘束防止構造。 5. The submersible centrifugal pump according to claim 1, wherein a blade plate of the impeller is configured such that a thickness of a tip portion is reduced and an outer peripheral length of the tip portion is shortened. Restraint prevention structure.
JP2004049930A 2004-02-25 2004-02-25 Restraint prevention structure for submersible centrifugal pump Expired - Lifetime JP4646529B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004049930A JP4646529B2 (en) 2004-02-25 2004-02-25 Restraint prevention structure for submersible centrifugal pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004049930A JP4646529B2 (en) 2004-02-25 2004-02-25 Restraint prevention structure for submersible centrifugal pump

Publications (2)

Publication Number Publication Date
JP2005240628A JP2005240628A (en) 2005-09-08
JP4646529B2 true JP4646529B2 (en) 2011-03-09

Family

ID=35022636

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004049930A Expired - Lifetime JP4646529B2 (en) 2004-02-25 2004-02-25 Restraint prevention structure for submersible centrifugal pump

Country Status (1)

Country Link
JP (1) JP4646529B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100097165A (en) * 2007-12-21 2010-09-02 요네하라기켄유켄가이샤 Pressurizing centrifugal pump
JP7073137B2 (en) * 2018-02-23 2022-05-23 株式会社荏原製作所 Centrifugal pump

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55135191U (en) * 1979-03-16 1980-09-25
JPS586990U (en) * 1981-07-07 1983-01-17 株式会社荏原製作所 vortex pump
JPS60188887U (en) * 1984-05-25 1985-12-14 新明和工業株式会社 Impeller for vortex pump
JPS6422891U (en) * 1987-07-31 1989-02-07
JPH01294997A (en) * 1988-05-20 1989-11-28 Hitachi Ltd Movable blade pump
JPH0397117U (en) * 1990-01-25 1991-10-04
JPH0791389A (en) * 1993-09-24 1995-04-04 Kubota Corp Operating method of underwater vertical pump
JP2002021769A (en) * 2000-07-04 2002-01-23 Tsurumi Mfg Co Ltd Suction cover in submergible pump and fixing structure for strainer

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55135191U (en) * 1979-03-16 1980-09-25
JPS586990U (en) * 1981-07-07 1983-01-17 株式会社荏原製作所 vortex pump
JPS60188887U (en) * 1984-05-25 1985-12-14 新明和工業株式会社 Impeller for vortex pump
JPS6422891U (en) * 1987-07-31 1989-02-07
JPH01294997A (en) * 1988-05-20 1989-11-28 Hitachi Ltd Movable blade pump
JPH0397117U (en) * 1990-01-25 1991-10-04
JPH0791389A (en) * 1993-09-24 1995-04-04 Kubota Corp Operating method of underwater vertical pump
JP2002021769A (en) * 2000-07-04 2002-01-23 Tsurumi Mfg Co Ltd Suction cover in submergible pump and fixing structure for strainer

Also Published As

Publication number Publication date
JP2005240628A (en) 2005-09-08

Similar Documents

Publication Publication Date Title
EP2484917B1 (en) Anti-vortex device and double-suction vertical pump provided with the anti-vortex device
JPS6036800A (en) Warman int ltd
US10544787B2 (en) Pump device
JP2006336642A (en) Centrifugal fan and its frame
JP2018529880A (en) Low cavitation impeller and pump
JP4672420B2 (en) Fuel pump
JP2006125391A (en) Rotor structure for internal gear pump
JP2004353655A (en) Radial impeller
US20140079541A1 (en) Electronic device
JP4646529B2 (en) Restraint prevention structure for submersible centrifugal pump
JP3862137B2 (en) Turbo hydraulic machine
JP2005240629A (en) Constraint preventing structure of submergible centrifugal pump
JP4540363B2 (en) Restraint prevention structure for submersible centrifugal pump
CN210152981U (en) Air blower
JP2005240630A (en) Constraint preventing structure of submergible centrifugal pump
JP4888871B2 (en) Air lock prevention structure for submersible pumps
KR101203241B1 (en) Centrifugal Blower
JP2009144531A (en) Centrifugal pump impeller and centrifugal pump
JP3864149B2 (en) Sewage pump
JP2005240764A (en) Liquid pump
JP4454987B2 (en) Submersible vertical pump and vertical residual water drainage pump
JP2005155393A (en) Volute pump
JP2017201136A (en) pump
JP4821254B2 (en) Non-self-priming pump
JP2005273521A (en) Air lock prevention structure for pump

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20061204

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091218

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100119

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100319

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100622

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20101207

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20101207

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131217

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Ref document number: 4646529

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151217

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151217

Year of fee payment: 5

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term