Viscous coupling
AssigneeBorgWarner Inc.
InventorsTobias Moser, Frank Gerber
Life of this patent
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Abstract
Disclosed is a viscous coupling that has a housing that carries ribs that are arranged concentrically about a central axis. A rotor is provided that can rotate relative to the housing about the central axis in a predetermined direction. The rotor also carries ribs, and the ribs of the housing and the rotor are arranged in a working chamber surrounded by the housing. Also provided is a fluid reservoir. A fluid discharge line leads from the working chamber to the fluid reservoir. A wiper is moveably arranged between the housing and the rotor and scrapes fluid from the rotor and feeds it to the fluid discharge line. A stop is provided for the wiper and is arranged next to the rotor.
Claims12
A viscous coupling, comprising:
- a housing carrying a plurality of first ribs arranged concentrically about a central axis;
- a rotor that can rotate relative to the housing about the central axis in a predetermined direction of rotation, the rotor carrying a plurality of second ribs, wherein the first ribs and second ribs are arranged in a working chamber surrounded by the housing;
- a fluid reservoir;
- a fluid discharge line leading from the working chamber to the fluid reservoir;
- a wiper arranged between the housing and the rotor and configured for scraping fluid from the rotor and feeding it to the fluid discharge line, the wiper being moveable relative to the housing and the rotor in a radial direction;
- and
- at least one stop for the wiper arranged next to the rotor wherein the at least one stop limits inward movement of the wiper in the radial direction.
Dependencies are inferred from the claim text.