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. 28, 2023
Filed:
Feb. 10, 2022
Applicant:
Sandvik Mining and Construction Oy, Tampere, FI;
Inventors:
Mika Oksman, Tampere, FI;
Jyrki Nissinen, Tampere, FI;
Juhani Laine, Tampere, FI;
Harri Moilanen, Tampere, FI;
Assignee:
Sandvik Mining and Construction Oy, Tampere, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 4/14 (2006.01); B25D 9/12 (2006.01); B25D 9/18 (2006.01); E02D 7/10 (2006.01);
U.S. Cl.
CPC ...
E21B 4/14 (2013.01); B25D 9/12 (2013.01); B25D 9/18 (2013.01); E02D 7/10 (2013.01); B25D 2250/065 (2013.01); B25D 2250/105 (2013.01); B25D 2250/121 (2013.01); B25D 2250/231 (2013.01);
Abstract
A hydraulic breaking hammer and method of supporting a percussion piston is provided. The breaking hammer includes a percussion device provided with a reciprocating piston. The piston is supported on a frame at its end portions by a first piston bearing element and a second piston bearing element. The second piston bearing element includes a collar sealing element facing towards a working collar of the piston. The piston bearing elements are easily mountable and dismountable separate components.