The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 26, 1985
Filed:
Nov. 18, 1982
Shiro Takahashi, Tokyo, JP;
Nitto Kohki Co., Ltd., Tokyo, JP;
Abstract
A drilling machine including a spindle and an elevating hollow shaft rotatable in unison with the spindle. An annular cutter is mounted in axial alignment with the hollow shaft and an elevating center drill is mounted in axial alignment with the annular cutter. The drill is movable to descend relative to the annular cutter to initiate the formation of a center hole in a workpiece prior to drilling. The drilling machine further includes a cylindrical member vertically movable and rotatably supported within a holder with the elevating hollow shaft being vertically movable and rotatably supported within the cylindrical member.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile