CA1292220C - Outil de forage avec palier en deux pieces et garniture radials rigide
- Google Patents
Outil de forage avec palier en deux pieces et garniture radials rigide
Info
Publication number
CA1292220C
CA1292220CCA000559193ACA559193ACA1292220CCA 1292220 CCA1292220 CCA 1292220CCA 000559193 ACA000559193 ACA 000559193ACA 559193 ACA559193 ACA 559193ACA 1292220 CCA1292220 CCA 1292220C
Authority
CA
Canada
Prior art keywords
cutter
bearing
seal
shaft
movement
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.)
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.)
Hughes Tool Co
Original Assignee
Hughes 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
Priority claimed from US07/023,170external-prioritypatent/US4753303A/en
Application filed by Hughes Tool CofiledCriticalHughes Tool Co
Application grantedgrantedCritical
Publication of CA1292220CpublicationCriticalpatent/CA1292220C/fr