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:
Jul. 01, 1980
Filed:
Jul. 31, 1978
Wolfgang Peetz, Blitzenreute, DE;
Siefgried Klaissle, Unterankenreute, DE;
Hawera Probst GmbH & Co., Ravensburg, DE;
Abstract
A rock drill, especially for rotary blow machines and drifters or stoppers with drilling cutting edges and at least one drilling dust conveying groove which in axial direction is confined by a web which extends around the drill axis and one lateral surface of which forms a drilling dust supporting surface which merges with the bottom of the drilling dust conveying groove. The bottom of the drilling dust conveying groove extends from the drilling dust supporting surface at an acute angle with regard to the drill axis rectilinearly up to the back surface of the web. The ratio of the width of the drilling dust conveying groove, measured in axial direction of said drill, to the width of the back of the web is greater than 5:1.