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. 29, 1981
Filed:
May. 30, 1979
Boris V Sudnishnikov, Novosibirsk, SU;
Veniamin V Kamensky, Novosibirsk, SU;
Eduard P Varnello, Novosibirsk, SU;
Sergei K Tupitsyn, Novosibirsk, SU;
Other;
Abstract
A rock-breaking implement, preferably for a self-propelled percussive machine for driving boreholes, having a body, at least a part of the body facing the borehole faces being cylindrical in shape. The body is provided with rock-breaking wedges which are arranged in such a manner that their blades extend radially at the end face of the body. The body has grooves opening outside to the periphery of the body and designed to remove broken rock, the grooves extending along helical lines and intersecting one another so that portions of the body located between the intersecting grooves define the rock-breaking wedges. Edges of said wedges which extend on the periphery of the body within the cylindrical part thereof define a continuous circle when projected to the plane of transverse section of the body and are designed for forming the walls of the borehole.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile