Patents Assigned to ERP-Rotax GmbH & Co. KG
  • Patent number: 6862977
    Abstract: A light weight piston for an internal combustion engine is disclosed that minimizes the stresses found in a transition area between the piston head and the associated piston pin bosses while maintaining a flexible soft connection between the piston skirts and the piston head. The piston includes a pair of piston skirts having tapered edges. Flared connecting walls are provided such that the distance between the connecting walls is minimized adjacent a pair of piston pin bosses and the distance between the connecting walls is maximized adjacent a portion of the tapered edges. The connecting wall flares in a generally outward direction such that at least a portion of the inner surfaces of the connecting wall has a generally convex curvature.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: March 8, 2005
    Assignee: ERP-Rotax GmbH & Co. KG
    Inventors: Karl Glinsner, Martin Olejniczak