Abstract: The present invention includes an apparatus for delivery of pressurized particulate matter against a surface or target to abrade, texture, sandblast, etch, erase, cut, penetrate, smooth, clean, polish, harden and/or deburr the surface or target. The invention is expected to be used largely by hobbyists, although numerous other uses are within the contemplation of the inventors. Included is a fluidizing chamber having a discharge end of an inlet tube that is disposed below or overlaps the intake end of the cannula such that the discharge of the inlet tube blows the particulate matter into the fluid above the intake end of the cannula, thereby suspending it therein, without clogging. The invention further provides for dual check valve function in several different embodiments to prevent backflow of particulate matter in the event of a drop in pneumatic pressure, and also to prevent excessive pressure from reaching the fluidizing chamber and cannula in the event of a pressure surge.

Abstract: A device adheres between the sole of a bicyclist's foot and a conventional bicycle pedal to effect substantially instantaneous adherence and release therebetween without use of manual manipulation, special shoes, tools, special bicycle parts or the like. A first mating portion is removably attached to a conventional bicycle pedal utilizing fabric type adherence panels of hooks and loops of the type presently commercially available under the trademark VELCRO. A second mating portion is similarly removably attached to the sole of a conventional bicyclist's shoe. Mating panels on the top of the bicycle pedal on bottom or sole of the bicyclist's foot or shoe then create the adherence. The adherence panels are used both for attachment of the first and second mating portions to the pedal and shoe respectively, and also for creating the adherence between the bicyclist's foot and bicycle pedal.

Abstract: There is provided a toy of a substantially elongated configuration having, in part, a generally rectangular member inclined at an acute angle with a surface over which the toy would be thrown. Continuously adjacent along the longitudinal edges and depending downwardly therefrom are two side skirts, preferably having an acute triangular shape. The acute angle of said triangle would be determined by, although not necessarily identical to, the acute angle made by the top member with the surface when the toy is at rest on that surface. The toy further having a pin to orient the toy as it travels, preferably a dorsal fin disposed near the trailing end of the toy, a handle disposed approximately two-thirds of the distance from the leading end to the trailing end of the toy, and a weight disposed near the leading end of the toy to minimize sailing of the leading end of the toy out of close proximity with the surface over which the toy is thrown.