Abstract: A ring-shaped end member for a rotor assembly, a rotor assembly including such ring-shaped end member and an electric machine including such rotor assembly. The ring-shaped end member includes at least one venting groove, at least one venting opening, a front surface and a rear surface. The venting groove extends from an interior to an outer circumference at the front surface. The venting opening extends from the front surface of the rear surface. The venting groove and the venting opening are in fluid communication with ambient air.

Abstract: Disclosed is an open online system that allows users to use an automated Request for Proposal (RFP) process powered by a modern communicational web-platform. The system adapts to user feedback, and provides the automated communicational platform to administrate the RFP process; letting users post so-called “Needs,” “NeedCatchers,” “NeedTrackers,” “Helps,” and “Pro-helps.” Needs are buying signals similar to RFPs, providing a request for a service, good, advice, or other information. NeedCatchers and NeedTrackers are implemented by users, and contain tables of words and data defined by a user, wherein the words and data relate to services, products, or information in which the user is interested in providing to other users. The NeedCatchers and NeedTrackers act as a way to receive posted Needs that are relevant to the words and data defined in the user's NeedCatcher or NeedTracker. “Help” and “Pro-help” are ways of providing information to a user posting a Need.