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:
Jul. 12, 2011
Filed:
May. 28, 2009
Frank Lauterbach, Hochstadt, DE;
Frank Lauterbach, Hochstadt, DE;
Rausch & Pausch GmbH, Selb, DE;
Abstract
A piston accumulator () comprises a pressure chamber () which is closed on one side by an axially shiftable piston () in order to change its volume depending on the axial position of the piston (). A locking mechanism is provided for retaining the piston () in a second position different from a first position against a spring preload (). The piston accumulator () further comprises an electromagnetic apparatus () having an armature () which is shifted upon axial shifting of the piston () from the first into the second position in its turn into an axial position in which a blocking element () of the locking mechanism is held by the armature () in a radial position so as to block a shift of the piston () back in the direction of its first position. For holding the blocking element () there is provided a separate interlocking member () which is fastened to the armature () and is made of a harder material than the armature ().