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:
Aug. 25, 2015
Filed:
May. 04, 2010
Steffen Triebe, Reichertshofen, DE;
Michael Staiger, Brackenheim, DE;
Lars Helling, Ingolstadt, DE;
Dieter Lachner, Gaimersheim, DE;
Steffen Triebe, Reichertshofen, DE;
Michael Staiger, Brackenheim, DE;
Lars Helling, Ingolstadt, DE;
Dieter Lachner, Gaimersheim, DE;
AUDI AG, Ingolstadt, DE;
Abstract
The invention relates to a fail-safe rotary actuator () for a coolant circuit, in particular for a coolant circuit of an internal combustion engine () having a plurality of sub-circuits () and (), includes a coolant delivery pump () for circulating the coolant within the coolant circuit, and having a rotary-slide housing () which has a plurality of housing pass-through openings () and () and in which at least one rotary slide () having at least one rotary slide pass-through opening () and () is rotatably supported, wherein the housing pass-through openings () and/or () are fluidly connected to at least one sub-circuit () and/or (), and can be brought into at least partial coincidence with the rotary slide pass-through openings () and/or () by a rotary motion of the rotary slide (), wherein a thermostat valve () opens a flow path running parallel to the rotary slide () from one of the sub-circuits () or () to the coolant delivery pump (), when a temperature limit of the coolant is exceeded.