Abstract: The output of a wheel speed sensor is sampled at dithered time intervals and the samples used to construct a pair of histograms representing high and low sample values. A minimum voltage threshold is determined as a function of the output voltage associated with the dominate histogram value for the low sample values. The output voltage associated with the dominant histogram value for the high sample values is compared to the minimum voltage threshold to determine whether a potential sensor wiring problem is developing.

Abstract: An aerodynamically-shaped flying disc comprised of two separate and distinct parts, a disc body portion and one or more separate rim portions. In one embodiment, the connection between the body and rim portions is permanent. In a second embodiment, the connection is disengageable to permit the use of interchangeable rim portions of different aerodynamic configurations, colors, dimensions and weights.

Abstract: Apparatus for creating optical illusions utilizing a rotating circular disc having alternating transparent and reflective areas according to a predetermined pattern. The reflective area is approximately equal to the transparent area. As the disc rotates at a user's selected speed the user perceives alternating reflected and transmitted images. Thus where the apparatus is positioned between an object and the user the transmitted image of the object is superimposed upon the reflected image of the user and consequently the two images merge to form the desired optical illusion.

Abstract: A water play toy shaped in the form of an animal or cartoon character in which the body is provided with an outlet section which has a plurality of flexible hollow tubes attached to water outlets spaced around the outlet section. A source of water under pressure is coupled to a conduit passing through the body and communicates with the outlet section for distributing water to the hollow tubes. When the water pressure is turned on, a plurality of individual jets of water are emitted by the individual tubes. Because the tubes are flexible they writhe and twist in a random motion pattern due to the action and reaction forces of the water acting on the tubes. In one embodiment a first enclosed chamber compresses the outlet section. A second enclosed chamber is built into the upper interior portion of the first chamber which communicates with a small pinhole-type outlet to provide a misting or fogging aspect to the overall water pattern emitted by the water play toy.