Abstract: A modular tire pressure leak detection system includes a tire that supports a vehicle and a sensor unit mounted on the tire. The sensor unit detects real-time tire parameters inside the tire and transmits the parameters to a processor. A plurality of modules are in electronic communication with the processor. The plurality of modules include a pre-processing module that receives the parameters and applies a set of operations to generate pressure time series data, a leak detection module that receives the pressure time series data and determines a leak rate of the tire, and a post-processing module that receives the leak rate of the tire and analyzes the leak rate of the tire with determinations from a plurality of conditions. A leak alert is issued by the post-processing module based upon the analysis of the leak rate of the tire and the determinations from the plurality of conditions.

Abstract: A bubble-blowing doll has a body which includes a trunk, two arms and two legs movably connected to the trunk, and a head also connected to the trunk and having a mouth opening. One of the arms rotates a ratchet wheel of a ratchet mechanism which, in turn, rotates a pulley about which a rope is wound during the operation of the ratchet mechanism. A bellows is mounted in the trunk, its upper end being stationary and its lower end being movable toward and away from the upper end, and the rope is connected to the lower end of the bellows, while a spring biases the lower end away from the upper end of the bellows. A conduit communicates the interior of the bellows with the interior of a balloon an open end of which is mounted on a reed and a distensible end of which is located at a free end of the reed and at the mouth opening of the head in a deflated condition, and at the exterior of the head next to the mouth opening in the inflated condition of the bellows.