An inflatable collection basket, tethered from a bridge superstructure, and including an airline leading thereto. Upon introduction of air into the deflated mechanism, the basket inflates to define a four sided cone having an upper inflated wall portion, descending to a centrally located port, wherein a recovery line leads into for retrieval of the waste and cuttings. There is further included a plurality of inflatable "fingers" extending from each of the corners of the upper border of the cone down to the lower ring, for defining the rectangular cone wherein the cuttings would flow. The cone further includes a material layer around its interior, for serving to confine any cuttings which fall into the cone and flow the cuttings down into the retrieval line. Upon inflation of the cone border and the plurality of fingers, the cone, would be elevated to a position adjacent the superstructure to be sandblasted, and the upper border of the cone would be secured to the superstructure via a plurality of lines or the like therefore securing the upper border of the cone against the superstructure. In other embodiments, the cone may be rectangular shaped or include a pair of cones, to cover a broad area. The retrieval line would be attached to a vacuum pump or the like so that any of the materials falling into the retrieval cone would immediately be suctioned out of the cone through the line and into a retrieval tank or truck located away from the blasting site.

A pair of laterally spaced foot treadles are hinged at their front ends to one end of a hollow base and normally are held in an inclined position by springs. Mounted between each treadle and the base is a normally inflated flexible air chamber that communicates with an air inlet and an air outlet in the base provided with check valves. The outlets of the outlet valves are connected by a conduit that is provided with an exhaust valve, the opening of which is resisted when either treadle is depressed, whereby it requires effort to expel air from the underlying chamber.

A tire trampoline platform having a plurality of openings installed therein for purposes of blowing air from an inner cavity of the tire onto a person jumping on the platform. The plurality of vent openings having an additional template to partially or fully cover the vent openings of the platform for purposes of adjusting the resilience of the tire trampoline. A tier or multiple layers of tires are configured such that the tire trampoline apparatus can be used as a chair like apparatus. An additional capability of the tire trampoline is to have a riding toy installed thereon the platform for allowing children to play.

My pneumatically sustained, flexible exercise surface-and-platform, which I call a "Trampol-air," initially designed for foot-ease along with all the benefits of exercising in any jogging-like manner on a flexing-resilient mini-trampoline-like surface, consists of a flat, flexible exercise surface supported by pneumatic tubing located underneath the outer edge (and, optionally, beneath the surface across the center area) of the exercise surface. The surface consists of a sheet of woven polypropoline (or other suitable material) which covers the pneumatic tubing and fastens at the back of the exercise platform's base (which extends out several inches beyond the exercise surface). The base may be made of a sturdy substance, such as one-inch thick plywood, or of thinner metal with a one-inch upward-curving circular lip around the edge. On the underneath-area of the base there is an access hole (or doors) large enough for putting air into the pneumatic tubing.

A balloon filled bag for use as a mattress or children's trampoline made of a flexible membrane or textile material and stuffed with air filled elastic toy balloons that are of random size. The interstices between the larger balloons are substanially filled by the small balloons to provide additional support, comfort and to prevent injury to the user of the bag.