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.)
Ingersoll Rand Co
Original Assignee
Ingersoll Rand 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 Ingersoll Rand CofiledCriticalIngersoll Rand Co
Priority to ES0002719UpriorityCriticalpatent/ES2719Y/en
Publication of ES2719UpublicationCriticalpatent/ES2719U/en
Application grantedgrantedCritical
Publication of ES2719YpublicationCriticalpatent/ES2719Y/en
Improved tool for drilling characterized in that it comprises a shank and a drill bit, seating surfaces in these members having cylindrical threaded parts that screw together, in which the screw parts have their opposite sides at different angles of inclination to the axes of said bodies, so as to constitute spiral cam surfaces on those sides of the fillets having the lowest degree of inclination, in order to keep the seating surfaces firmly joined together. (Machine-translation by Google Translate, not legally binding)
ES0002719U1934-03-171934-03-17
Perfect tool for drilling.
ExpiredES2719Y
(en)