Abstract: A simple, strong and fast acting tool retention subsystem is intended for both original equipment and retrofit applications in machining centers with automatic tool changer systems. A machining center incorporating the invention is described. The invention is compatible with ANSI standards for spindles, tapered tool shanks and knobs, and is configured to eliminate the tool chatter and tool shank taper unseating and release commonly occurring in conventional spring actuated tool retention subsystems when spiral fluted cutters are used. The tool shank is positively jam locked by a rotary bolt actuator means that generates a very high value of axial pre-load tension, comparable to that which was furnished by the very successful historic manual draw-in bolt retention subsystem used in milling machines. A bi-directional free wheeling impact motor drives the rotary bolt actuator means between open and closed positions of a maximally strong collet.

Abstract: A functionally coordinated nursing slip and nursing bra enable a working mother to breast feed her infant without having to make any indecorous motions that attract unwanted attention, in order to adjust her nursing undergarments. This is accomplished without affecting the stylishness, strap adjustability, or concealment otherwise provided by the slip. Similarly, the functionality of the nursing bra is not reduced. The coordination arrangement allows the opened slip to be fully supported by the nursing bra. The opened slip parts are retained handily by the coordinated bra so that reclosure is easily done. Thus all need for the mother to seek total privacy in nursing is eliminated, and she can nurse around other persons with minimal embarassment.

Abstract: A unique hybrid shop-style and continuous-duty vacuum collector using a large diameter filter has the advantages and capabilities of both specialized types. Because of efficient design and the use of pleated paper, the effective filter surface area is many times that of a conventional shop vacuum. This enables extended runs between filter cleanings in a reliable portable machine intended for both the hobbyist and the commercial shop operator. The filter cleaning mechanism breaks away the dirt accumulated on the filter surfaces by means of a plurality of shock generators symmetrically located at the filter circumference. These peripherally-generated shocks and the resulting filter oscillations are efficiently distributed by the design to be exactly parallel to the pleated paper surfaces, in order to protect the filter from damage. A mechanical sail interlock prevents further damage by precluding accidental activation of the filter cleaning mechanism during the dirt collection process.

Abstract: A unique hybrid shop-style and continuous-duty vacuum collector of reasonable size offers the advantages and capabilities of both specialized types, by substantially multiplying the conventional shop vacuum effective filter surface area, while preserving machine portability. The preferred embodiment employs three cylindrical pleated-paper filters to collect a wide range of sizes and weights of mixed dust and particulate debris. It is intended for both the hobbyist and the commercial shop operator who desire extended runs between filter cleanings. The filter cleaning mechanism efficiently breaks away the filtered accumulation, but protects the filter material from damage, by the carefully oriented application of mechanical shocks to generate cleaning oscillations of the filter surfaces only in their own planes. A mechanical sail interlock prevents additional filter damage by precluding accidental activation of the filter cleaning mechanism during the dirt collection process.

Abstract: A simple, rugged and wide velocity range radial flow turbine wheel, with entry flow radially inward and exhaust flow radially outward, has an efficient integral fluid-dynamic multiple staging system needing no stationary devices for redirecting the fluid. Consequently there are no clearance problems, and it can be used with all fluids, including contaminated ones. The tangentially-entering fluid stream is captured and trapped in an annular passageway between an outer set of circumferentially mounted blades and a carefully coordinated inner set of circumferentially mounted planar surfaces. Energy is extracted from the stream when the flow direction is changed each time the faster-moving fluid is vectored radially inwardly from a blade to an inner surface, then vectored radially outwardly to the next blade, then to the next inner surface, etc. All of the pressure, lift and drag forces contribute to turbine output.