B23G5/02- Thread-cutting tools Die-heads without means for adjustment.B23G5/00- Thread-cutting tools Die-heads.B23G- THREAD CUTTING WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH.B23- MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR.229910001209 Low-carbon steel Inorganic materials 0.000 description 1.238000006011 modification reaction Methods 0.000 description 2.238000005755 formation reaction Methods 0.000 description 2.230000015572 biosynthetic process Effects 0.000 description 2.229910001315 Tool steel Inorganic materials 0.000 description 3.230000000052 comparative effect Effects 0.000 description 8.230000000875 corresponding Effects 0.000 claims abstract description 12.Assignors: HARADA, Kazumitsu Publication of US20200230727A1 publication Critical patent/US20200230727A1/en Application granted granted Critical Publication of US11110531B2 publication Critical patent/US11110531B2/en Status Active legal-status Critical Current Adjusted expiration legal-status Critical Links

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 OSG Corp filed Critical OSG Corp Assigned to OSG CORPORATION reassignment OSG CORPORATION ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).

Original Assignee OSG Corp 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 or warranty as to the accuracy of the list.) ( en Inventor Kazumitsu Harada Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number US16/486,305 Other versions US11110531B2

13818 thread forming tap