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:
Sep. 02, 1986
Filed:
May. 17, 1985
Henryk J Chylinski, Haverhill, MA (US);
The Gillette Company, Boston, MA (US);
Abstract
Apparatus for forming a sharpened edge on a razor blade or the like includes structure for passing a blade element on which it is desired to form a sharpened edge along a path, and abrading structure mounted adjacent the path for forming a primary sharpened edge on the blade element. a secondary sharpened edge forming stage includes secondary edge forming apparaus mounted for rotation adjacent the path, the secondary edge forming apparatus having a helical abrading land formed thereon for forming spaced recesses in at least one of the facets that define the primary edge along the length of the sharpened primary edge. The blade element is advanced along the sharpening path and the secondary edge forming apparatus is rotated in synchronism with the advance of the blade element to abrade a series of spaced recesses along the primary sharpened cutting edge, those recesses providing secondary sharpened cutting edge portions spaced at regular intervals along the primary sharpened cutting edge and the primary and secondary sharpened cutting edge portions forming an essentially continuous undulating sharpened cutting edge in a razor blade or the like.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile