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. 03, 2020
Filed:
Nov. 02, 2016
Gustav Klauke Gmbh, Remscheid, DE;
Egbert Frenken, Heinsberg, DE;
Andreas Lehr, Neuss, DE;
GUSTAV KLAUKE GMBH, Remscheid, DE;
Abstract
The invention relates to a hydraulically actuated piston () guided in a cylinder (), and to a hydraulic working tool () having a working head (), wherein the piston () has an impact surface () which borders an impact space () on the piston side provided between the piston () and the cylinder (), and wherein hydraulic fluid () can act on the impact surface () by increasing the impact space () in order to move the piston () in an impact direction (r), and the piston () forms a limiting device () for a through-flow of the hydraulic fluid (). According to the invention, in order to design a hydraulic piston guided in a cylinder or a hydraulic working tool in such a way that no undue signs of wear occur even during working processes with the sudden disappearance of the counter pressure, a hydraulic chamber () filled with the hydraulic fluid () is formed in the impact direction (r) after the limiting device (), wherein a volume of the hydraulic chamber () is reduced according to the increase in the impact space (), by means of the displacement of hydraulic fluid () out of the hydraulic chamber () and into the impact space () via the limiting device ().