Abstract: A device signals possible failure of a typical ball-and-socket hitch. A breakaway switch on the rear of the towing vehicle has an actuating member positioned substantially immediately above the ball of the hitch. A bracket is mounted on the front of the towed vehicle at substantially the midpoint between the tow bar outer ends. A cable connected between the actuating member and the bracket has a length selected such that, when the distance between the switch and the second bracket exceeds a predetermined threshold, the cable pulls the actuating member rearwardly to actuate the switch, causing an indicator circuit in the towing vehicle to give an audible or visual signal.

Abstract: A pet dish is provided including a food dish having a predetermined diameter for containing pet food therein. A base is included for containing water therein. The base has supports for supporting a periphery of a dish of any one of a plurality of diameters thereover in a fixed relation.

Abstract: In an illustrative embodiment of the invention, an angular digital-to-resolver data converter apparatus is provided for converting a digital input signal representative of angular data into digital pseudo sine and cosine output signals representative of the angular data, which when converted into analog signals may be used to provide excitation to analog servo system resolvers. The digital or binary output signals which approximate the sine and cosine function of the digital angular data input signal are related such that the ratio of the digital output signal representative of the pseudo sine function to the digital output signal representative of the pseudo cosine function equals the true tangent of the actual angle.