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:
Sep. 11, 2012
Filed:
Jul. 28, 2006
Ulrich Teschke, Rheinberg, DE;
Martin Engels, Alpen, DE;
Ulrich Teschke, Rheinberg, DE;
Martin Engels, Alpen, DE;
Norgren GmbH, Alpen, DE;
Abstract
A locking piston assembly () is provided according to the invention. The locking piston assembly () includes a piston chamber (), a piston rod () configured to be substantially extended from and substantially retracted into the piston chamber (), and a piston head () coupled to the piston rod () and configured to move reciprocally in the piston chamber (). The locking piston assembly () further includes at least one lock () configured to mechanically lock the piston head () and the piston rod () in at least a substantially fully extended position. The lock () is configured to unlock the piston head () and the piston rod () in a presence of a pressurized fluid provided to retract the piston rod (). The pressurized fluid is introduced into the piston chamber () and the piston rod () is retracted only after the lock () is unlocked.