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. 11, 2001
Filed:
Nov. 13, 1998
Arvo Hurskainen, Lahti, FI;
Timo Sippus, Hollola, FI;
Sandvik Tamrock Oy, Tampere, FI;
Abstract
The invention relates to an arrangement in connection with a hydraulic breaking apparatus, the arrangement comprising a housing (,) placed around a percussion hammer (,), and a changeable wearing element (,) arranged at the lower part of the housing. The wearing element (,) receives blows and forces directed at the lower part of the housing (,). The wearing element (,) is fastened in such a way that it can be detached and changed easily and rapidly, if required. Further, the structure of the breaking apparatus may also be such that when the wearing element (,) is removed, it is possible to carry out the maintenance and repair operations of the lower frame (,) of the percussion hammer without disassembling the upper frame (,) of the percussion hammer.