JPH044986U - - Google Patents

Info

Publication number
JPH044986U
JPH044986U JP4384990U JP4384990U JPH044986U JP H044986 U JPH044986 U JP H044986U JP 4384990 U JP4384990 U JP 4384990U JP 4384990 U JP4384990 U JP 4384990U JP H044986 U JPH044986 U JP H044986U
Authority
JP
Japan
Prior art keywords
chevron
ring bit
view
ridgeline
boring
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
JP4384990U
Other languages
English (en)
Other versions
JP2525225Y2 (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 JP1990043849U priority Critical patent/JP2525225Y2/ja
Publication of JPH044986U publication Critical patent/JPH044986U/ja
Application granted granted Critical
Publication of JP2525225Y2 publication Critical patent/JP2525225Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Earth Drilling (AREA)

Description

【図面の簡単な説明】
第１ａ図は本考案の一実施例を示すリングビツ
トの平面図、第１ｂ図は同部分側面図、第２ａ図
は本考案の一実施例のチツプ斜視図、第２ｂ図は
同平面図、第３ａ図は従来のクラウンビツトの平
面図、第３ｂ図は同部分側面図、第４ａ図は従来
のチツプの斜視図、第４ｂ図は同平面図である。 １１……リングビツト、１２……チツプ、１２
ａ……稜線。

Claims (1)

    【実用新案登録請求の範囲】
  1. ボーリング用のリングビツトにおいて、該リン
    グビツトに植え込まれたチツプの形状を、頂部が
    山形の長方体とし、この山形は対角線を稜線とし
    たことを特徴とするリングビツト。
JP1990043849U 1990-04-24 1990-04-24 リングビット Expired - Lifetime JP2525225Y2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990043849U JP2525225Y2 (ja) 1990-04-24 1990-04-24 リングビット

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990043849U JP2525225Y2 (ja) 1990-04-24 1990-04-24 リングビット

Publications (2)

Publication Number Publication Date
JPH044986U true JPH044986U (ja) 1992-01-17
JP2525225Y2 JP2525225Y2 (ja) 1997-02-05

Family

ID=31556621

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990043849U Expired - Lifetime JP2525225Y2 (ja) 1990-04-24 1990-04-24 リングビット

Country Status (1)

Country Link
JP (1) JP2525225Y2 (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6447892U (ja) * 1987-09-17 1989-03-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6447892U (ja) * 1987-09-17 1989-03-24

Also Published As

Publication number Publication date
JP2525225Y2 (ja) 1997-02-05

Similar Documents

Publication Publication Date Title
JPH044986U (ja)
JPS6246520U (ja)
JPH0451318U (ja)
JPS5864337U (ja) 鍼灸針用受皿
JPS60169408U (ja) 割れ及び曲がり防止用釘
JPS60166385U (ja) スキ−ストツクのリング
JPS58130617U (ja) 口紅ケ−ス
JPS6178743U (ja)
JPH0239781U (ja)
JPS58176742U (ja) 盆栽用根張り矯正具
JPH01159208U (ja)
JPS6395564U (ja)
JPS6453230U (ja)
JPS62154991U (ja)
JPH0463730U (ja)
JPH0326783U (ja)
JPS6419767U (ja)
JPH02148636U (ja)
JPS63136342U (ja)
JPS6053836U (ja) 間知ブロツク
JPS61144867U (ja)
JPH0452438U (ja)
JPS62199937U (ja)
JPS6177165U (ja)
JPS6355600U (ja)