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. 04, 2020
Filed:
Apr. 13, 2017
Schaeffler Technologies Ag & Co. KG, Herzogenaurach, DE;
Matthias Kruse, Sasbach, DE;
SCHAEFFLER TECHNOLOGIES AG & CO. KG, Herzogenaurach, DE;
Abstract
A piston assembly for a clutch pack including a piston in form of a ring-shaped plate, a stator connected to the piston, the stator having a circular stator main part and at least one radial protrusion extending radially outwardly from the circular stator main part, each of the at least one radial protrusion of the stator having a first side and a second side, and including a rotor that is connected to the stator, the rotor having a circular rotor main part and at least one radial protrusion extending radially inwardly from the circular rotor main part, each of the at least one radial protrusion of the rotor having a first side and a second side. A pressure chamber is formed between the second side of the at least one radial protrusion of the stator and the first side of an adjacent one of the at least one radial protrusion of the rotor, and an expandable vessel being provided in the pressure chamber between the radial protrusions of the stator and the rotor with the expandable vessel having an expandable volume.