AU481047B2 - Mast locking mechanism for drilling apparatus - Google Patents

Mast locking mechanism for drilling apparatus

Info

Publication number
AU481047B2
AU481047B2 AU79256/75A AU7925675A AU481047B2 AU 481047 B2 AU481047 B2 AU 481047B2 AU 79256/75 A AU79256/75 A AU 79256/75A AU 7925675 A AU7925675 A AU 7925675A AU 481047 B2 AU481047 B2 AU 481047B2
Authority
AU
Australia
Prior art keywords
locking mechanism
drilling apparatus
mast locking
mast
drilling
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
AU79256/75A
Other versions
AU7925675A (en
Inventor
Dennis Nelmark And Matthew Smith Jack
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.)
Ruston-Bucyrus Ltd
Original Assignee
Ruston-Bucyrus 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
Priority claimed from US452730A external-priority patent/US3905168A/en
Application filed by Ruston-Bucyrus Ltd filed Critical Ruston-Bucyrus Ltd
Application granted granted Critical
Publication of AU7925675A publication Critical patent/AU7925675A/en
Publication of AU481047B2 publication Critical patent/AU481047B2/en
Expired legal-status Critical Current

Links

AU79256/75A 1974-03-20 1975-03-19 Mast locking mechanism for drilling apparatus Expired AU481047B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
USUS452,730 1974-03-20
US452730A US3905168A (en) 1974-03-20 1974-03-20 Mast locking mechanism

Publications (2)

Publication Number Publication Date
AU7925675A AU7925675A (en) 1976-09-23
AU481047B2 true AU481047B2 (en) 1976-09-23

Family

ID=

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