Abstract: An ice-removal tool for an ice-removal machine is provided, which tool, during operation, is driven in rotation about an axis of rotation, including a disc-shaped holder with a first side and a second side, which is opposite the first side, wherein a plurality of ridges is arranged on the first side, wherein a toothed ring with an inner toothing is arranged on the second side.

Abstract: The system and method uses a one or more pilot beacons to more accurately locate the position of an indoor mobile device. Modulation and level control of the co-pilot beacons provides a third dimension, z-axis, of positioning. An augmented Position Determining Entity (“aPDE”) can be used which does not modify the existing PDE in the network, and facilitates and ensures high-integrity information during a 2D to 3D positioning upgrade.

Abstract: A method for improving location determination for a mobile device location of which precludes it from sufficiently accurate determination by a standard position determination mechanism is disclosed. The method includes a step of receiving, at a server and from a mobile device, an indication that the mobile device detects a supplemental position determination signal not associated with an overhead channel set that is transmitted in support of traffic channels required to support voice or data communications. The method also includes steps of referencing a database to identify one or more criteria associated with the supplemental position determination signal; determining that the one or more criteria associated with the supplemental position determination signal indicates that a source generating the supplemental position determination signal is within a close proximity of the mobile device; and identifying the location of the source generating the supplemental position determination signal.