[go: up one dir, main page]

AU444133B2 - Expandible rotary drill bit with hydraulic lock - Google Patents

Expandible rotary drill bit with hydraulic lock

Info

Publication number
AU444133B2
AU444133B2 AU56858/69A AU5685869A AU444133B2 AU 444133 B2 AU444133 B2 AU 444133B2 AU 56858/69 A AU56858/69 A AU 56858/69A AU 5685869 A AU5685869 A AU 5685869A AU 444133 B2 AU444133 B2 AU 444133B2
Authority
AU
Australia
Prior art keywords
expandible
drill bit
rotary drill
hydraulic lock
hydraulic
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
Application number
AU56858/69A
Other versions
AU5685869A (en
Inventor
Archer William Kammerer, Jr
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.)
Rotary Oil Tool Co
Original Assignee
Rotary Oil Tool Co
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 Rotary Oil Tool Co filed Critical Rotary Oil Tool Co
Application granted granted Critical
Publication of AU5685869A publication Critical patent/AU5685869A/en
Publication of AU444133B2 publication Critical patent/AU444133B2/en
Expired legal-status Critical Current

Links

AU56858/69A 1968-09-24 1969-06-23 Expandible rotary drill bit with hydraulic lock Expired AU444133B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
USUS761,947 1968-09-24

Publications (2)

Publication Number Publication Date
AU5685869A AU5685869A (en) 1970-12-24
AU444133B2 true AU444133B2 (en) 1970-12-24

Family

ID=

Similar Documents

Publication Publication Date Title
CA949060A (en) Drill bit construction
CA932318A (en) Rock bit assembly
AU4834168A (en) Abig hole drilling bit
CA946825A (en) Drill bit
AU463698B2 (en) Big hole drilling bit
AU444133B2 (en) Expandible rotary drill bit with hydraulic lock
CA931137A (en) Large diameter earth boring bit
AU5685869A (en) Expandible rotary drill bit with hydraulic lock
SU578420A1 (en) Drill bit
CA900951A (en) Expansible rotary drill bit with hydraulic lock
AU444110B2 (en) Drill bit
CA928948A (en) Drilling bolt holes
CA790457A (en) Drill bit
CA868781A (en) Rock drilling bit
CA791556A (en) Rock drill bit
CA788914A (en) Drilling mud
CA820148A (en) Rotary drilling bit
CA781323A (en) Drilling rig
CA715416A (en) Rotary earth boring drill
CA796618A (en) Rock drill bits
CA779147A (en) Drill rigs
CA781383A (en) Rotary drilling of wells
CA798664A (en) Hydraulic turbines for borehole drilling
AU466941B2 (en) Drill bit construction
CA898236A (en) Retractable drill bits