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:
Jan. 24, 2017
Filed:
Sep. 16, 2013
William J. Brady, St. Louis, MO (US);
William J. Brady, St. Louis, MO (US);
WBM-LLC, St. Louis, MO (US);
Abstract
A polycrystalline diamond drill bit for percussion drilling, in small holes in high silica ground. The bits are made having a bit body, and a series of insets locating in the bit body, and the bits are made using a double chisel design, or a modified double chisel design. The inserts are set into the bit body at very specific angles. The inserts have specific lengths to provide cut clearance for the bit body. The cutting angle the and radius on the tip of each insert in addition to the diameter of the inserts, provide a machine thrust pressure and machine torque pressure at low ranges when the PCD bits are used in percussion drilling.