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:
Nov. 29, 2016
Filed:
May. 31, 2012
Applicants:
Stuart Harrison, Clyde, AU;
Edwin Spoelstra, Leighton, IA (US);
Nathan James Meyer, Knoxville, IA (US);
Inventors:
Stuart Harrison, Clyde, AU;
Edwin Spoelstra, Leighton, IA (US);
Nathan James Meyer, Knoxville, IA (US);
Assignee:
Vermeer Manufacturing Company, Pella, IA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21D 9/02 (2006.01); E21D 9/10 (2006.01); E21D 9/00 (2006.01); E21B 7/04 (2006.01); E21B 7/06 (2006.01);
U.S. Cl.
CPC ...
E21D 9/1006 (2013.01); E21B 7/046 (2013.01); E21B 7/06 (2013.01); E21B 7/067 (2013.01); E21D 9/004 (2013.01); E21D 9/02 (2013.01);
Abstract
A tunneling apparatus includes a drill head and a steering shell. The drill head includes a main body having a distal end and an oppositely disposed proximal end. The steering shell is disposed at the distal end of the drill head and is movable relative to the main body of the drill head. The drill head includes structure that assists in maintaining a precise line.