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:
Dec. 05, 2023
Filed:
Jun. 18, 2020
Applicant:
Sandvik Mining and Construction Oy, Tampere, FI;
Inventor:
Olivier Bruandet, Tampere, FI;
Assignee:
Sandvik Mining and Construction Oy, Tampere, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/14 (2006.01); E21B 21/18 (2006.01);
U.S. Cl.
CPC ...
E21B 4/14 (2013.01); E21B 21/18 (2013.01);
Abstract
A down the hole drilling assembly having an elongate casing, a fluid powered piston, top and bottom working chambers, a plurality of fluid passages and an exhaust system, wherein the sum of the top work area and a top intermediate work area of the piston is equal to the cross-sectional area of the casing bore.
Bruandet, Olivier. (2023). Down the hole drilling assembly and apparatus (U.S. Patent No. 11834929). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11834929
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile