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.:

US 6913094 B1

PDF
Full Text
Expired
Date of Patent:
Jul. 05, 2005

Filed:

Jun. 02, 2003
Applicants:

Toyohiko Youan, Hirakata, JP;

Kentaro Watanabe, Hirakata, JP;

Eiichi Muramoto, Hirakata, JP;

Touru Hishiyama, Hirakata, JP;

Inventors:

Toyohiko Youan, Hirakata, JP;

Kentaro Watanabe, Hirakata, JP;

Eiichi Muramoto, Hirakata, JP;

Touru Hishiyama, Hirakata, JP;

Assignee:

Komatsu Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B010/60 ;
U.S. Cl.
CPC ...
Abstract

A leading body for a ground drilling machine is provided which includes a main body which is tapered at a front end thereof to form a first sloped surface and a second sloped surface on opposite sides of the front end of the main body. A slant-cutting section extends from the main body substantially along the first sloped surface. And injection ports which are adapted to inject digging liquid are positioned in the slant-cutting section such that the injection ports inject digging liquid rearward with respect to a propelling direction of the leading body along an obtuse angle with respect to a rotation axis of the leading body and substantially along the second sloped surface.


Find Patent Forward Citations

Youan, Toyohiko. (2005). Leading body for ground drilling and ground drilling machine (U.S. Patent No. 6913094). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6913094

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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