JPS61169189U - - Google Patents

Info

Publication number
JPS61169189U
JPS61169189U JP4990685U JP4990685U JPS61169189U JP S61169189 U JPS61169189 U JP S61169189U JP 4990685 U JP4990685 U JP 4990685U JP 4990685 U JP4990685 U JP 4990685U JP S61169189 U JPS61169189 U JP S61169189U
Authority
JP
Japan
Prior art keywords
pressure reducing
shaft
reducing bushing
outer cylinder
inner cylinder
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
Application number
JP4990685U
Other languages
English (en)
Other versions
JPH0342156Y2 (ja
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 filed Critical
Priority to JP4990685U priority Critical patent/JPH0342156Y2/ja
Publication of JPS61169189U publication Critical patent/JPS61169189U/ja
Application granted granted Critical
Publication of JPH0342156Y2 publication Critical patent/JPH0342156Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Description

【図面の簡単な説明】
第１図〜第４図は本考案の実施例を示し、第１
図は減圧ブツシユ部分の断面図、第２図は減圧ブ
ツシユの断面図、第３図は全体概略断面図、第４
図は他の実施例を示す減圧ブツシユ部分の断面図
であり、第５図はダウンホールモータの全体断面
図、第６図は先に出願したものの概略断面図であ
る。 １は本体、３はシヤフト、２０は減圧ブツシユ
、２３は内筒、２６は外筒、２７は隙間。

Claims (1)

    【実用新案登録請求の範囲】
  1. 本体１とシヤフト３との間におけるシヤフト３
    の軸承部分の上方に、内筒２３と外筒２６との間
    に軸方向の隙間２７を有する減圧ブツシユ２０を
    、その内筒２３と外筒２６の少なくともどちらか
    一方を弾性材を介して設けたことを特徴とするダ
    ウンホールモータ。
JP4990685U 1985-04-05 1985-04-05 Expired JPH0342156Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4990685U JPH0342156Y2 (ja) 1985-04-05 1985-04-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4990685U JPH0342156Y2 (ja) 1985-04-05 1985-04-05

Publications (2)

Publication Number Publication Date
JPS61169189U true JPS61169189U (ja) 1986-10-20
JPH0342156Y2 JPH0342156Y2 (ja) 1991-09-04

Family

ID=30567525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4990685U Expired JPH0342156Y2 (ja) 1985-04-05 1985-04-05

Country Status (1)

Country Link
JP (1) JPH0342156Y2 (ja)

Also Published As

Publication number Publication date
JPH0342156Y2 (ja) 1991-09-04

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