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:
Feb. 03, 2026
Filed:
Dec. 02, 2021
Gustav Klauke Gmbh, Remscheid, DE;
Egbert Frenken, Heinsberg, DE;
GUSTAV KLAUKE GMBH, Remscheid, DE;
Abstract
The invention relates to a hydraulic cylinder () with a hydraulically actuatable working piston () movable therein for transferring a working force to an object () to be processed outside of the hydraulic cylinder () accompanied by the buildup of a counterforce, wherein the working piston () has an actuation surface (), the actuation surface () borders an actuation space present between the working piston () and the hydraulic cylinder () in a working direction (R) in which the working force is transferred, and for executing an operation, hydraulic fluid can act for moving the working piston () in the working direction (R) toward the actuation surface (), accompanied by an enlargement of the actuation space. The invention further relates to a hydraulic work tool () with a hydraulic cylinder (), and to a shock absorption method using such a hydraulic cylinder (). In order to achieve an effective shock absorption, the invention proposes that an intermediate piston () be arranged before the working piston () in the working direction (R), that the actuation space be divided by the intermediate piston () into an entrance space () and a working space (), wherein the entrance space () is formed between a cylinder floor () and the intermediate piston (), and the working space () is formed between the working piston () and the intermediate piston (), that the hydraulic fluid can flow out of the entrance space () into the working space (), accompanied by an enlargement of the working space (), and that a mechanical coupling between the working piston () and the intermediate piston () can compensate for an actuation emanating from the hydraulic fluid located in the working space () given a loss in counterforce.