NO941779L - Borkrone - Google Patents

Borkrone

Info

Publication number
NO941779L
NO941779L NO941779A NO941779A NO941779L NO 941779 L NO941779 L NO 941779L NO 941779 A NO941779 A NO 941779A NO 941779 A NO941779 A NO 941779A NO 941779 L NO941779 L NO 941779L
Authority
NO
Norway
Prior art keywords
drill bit
rotary
wall
recesses
sleeve
Prior art date
Application number
NO941779A
Other languages
English (en)
Other versions
NO941779D0 (no
Inventor
Stephanus Frederick Kloppers
Original Assignee
Boart Int 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 Boart Int Ltd filed Critical Boart Int Ltd
Priority to NO941779A priority Critical patent/NO941779L/no
Publication of NO941779D0 publication Critical patent/NO941779D0/no
Publication of NO941779L publication Critical patent/NO941779L/no

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Abstract

En roterende eller roterende/slag- borende borkrone (10) med en avsmalnet hylse (14) i en ende. En vegg (18) bin- der hylsen (14). Flere utsparinger (20) er tilveiebrakt i veggen. I en utførel- sesform strekker hver utsparing (20) seg i lengderetningen og ligner en rille. Den har en dal (22) omgitt av spisser (24). I en utførelsesform kan utsparing- ene gå langs omkretsen, dvs. skruefor- met.
NO941779A 1994-05-11 1994-05-11 Borkrone NO941779L (no)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NO941779A NO941779L (no) 1994-05-11 1994-05-11 Borkrone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NO941779A NO941779L (no) 1994-05-11 1994-05-11 Borkrone

Publications (2)

Publication Number Publication Date
NO941779D0 NO941779D0 (no) 1994-05-11
NO941779L true NO941779L (no) 1995-11-13

Family

ID=19897097

Family Applications (1)

Application Number Title Priority Date Filing Date
NO941779A NO941779L (no) 1994-05-11 1994-05-11 Borkrone

Country Status (1)

Country Link
NO (1) NO941779L (no)

Also Published As

Publication number Publication date
NO941779D0 (no) 1994-05-11

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