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. 14, 2020
Filed:
May. 01, 2018
Vermeer Manufacturing Company, Pella, IA (US);
Michael D. Langenfeld, Pella, IA (US);
Andrew J. Kreimeyer, Knoxville, IA (US);
Tyler J. Dorin, Pella, IA (US);
Vermeer Manufacturing Company, Pella, IA (US);
Abstract
A drill head includes a drive shaft that has an uphole end and a downhole end. The downhole end includes drive features that are torque transmitting and radial load bearing. The drill head also includes a coupling that includes drive features that are torque transmitting and radial load bearing. The drive features of the coupling are sized and shaped to mate with the drive features of the drive shaft. The coupling includes an axial fluid flow passage and a radial fluid flow passage. The radial fluid flow passage is in communication with the axial fluid passage, and fluid flow is permitted between the drive features of the drive shaft and the drive features of the coupling.