Other

P3 Technologies, LLC

Robert W Sanders

Brandon A Demski

A centrifugal impeller includes a pressurized cavity that reduce the stresses in the impeller disk, blades, shroud and hub as the stiffness of the rotor is not compromised while weight is reduced across the component and peak stress regions are shifted across the part. The centrifugal impeller can be a centrifugal pump or a radial inflow turbine. The pressurized cavity is formed between a forward wall and an aft wall of the impeller and can include a plurality of orifices that open into the cavity to supply pressure from low to high pressure location around the impeller. Annular rings can be used within the cavity to stiffen the impeller. Radial and tangential stiffening ribs can be used on the two walls to stiffen the impeller.

High-speed pressurized impeller disk

A tool storage apparatus and method of manufacture thereof is provided. Tubular extensions allow storage of tools designed for connection with tubes or cylindrical members. Tubular extensions are connected at an acute angle to a base. The positioning of the tubular extension can minimize the space required for storage. For use with swimming pool maintenance tools, space efficiency can be maximized.

Tool storage apparatus and method

Pool caddy

The tongue or drawbar of a boat trailer is severed intermediate its ends; and the cut ends are then releasably hinged together by a pair of spaced, parallel hinge pins, either of which can be withdrawn to permit the forward end of the drawbar to be swung about the remaining pin, and rearwardly into an inactive position in which it effectively shortens the overall length of the drawbar, so that the associated trailer can be readily stored in a conventional garage. The hinge mechanism comprises a pair of tubular members designed to be slid over the cut ends of the drawbar, and then to be bolted and/or welded to the associated drawbar section. Confronting ends of the hinge members have thereon two sets of cooperating hinge barrels, which releasably support the two hinge pins about spaced, vertical axes adjacent opposite sides, respectively, of the drawbar. These tubular hinge members can be manufactured in various sizes so that they can be inserted onto drawbars of the most conventional sizes, e.g. 3'.times.3'; 3'.times.4'; and 3'.times.5'.

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Stuart, FL, United States of America

Robert W Sanders