Abstract: A combination air sampling cassette and nutrient media dish having base, orifice plate, and nutrient media dish assembly for the collection of airborne particles. The orifice plate includes a plurality of holes that brings the nutrient media dish into fluid communication with the ambient air. A pump is connected to the air outlet in the base to pull air into the orifice plate through the holes, over the culture media, and out through the air outlet. As the air passes through the holes in the orifice plate it is accelerated and results in the selected impaction of particles in the culture media. A cover fits over the assembly to protect the culture media prior to and after sampling.

Abstract: An electrical extension cord includes a male plug convertible between standard residential or blade-type plug elements and twist-lock blade elements, and a female receptacle plug designed to accommodate both standard and twist-lock male plugs. The male plug includes a pivoting body member having a twist-lock set of blade elements on one end, and a residential or blade-type set of plug elements on the other end, such that the user can selectively rotate the body member to orient the desired set of plug elements outwards for use. The selected set of plug elements are placed in electrical contact with the corresponding common, hot, and ground wires in the extension cord by releasable capture of the terminals of the wires, as by the use of spring contacts at the base of the plug elements. The inventive female plug accommodates both blade-type and twist-lock male plugs by providing fixed, permanent receiving slots for the plug elements of each type.

Abstract: A wakeboard having a substantially planar plastic base with a top surface and a bottom surface and a lightweight tubular alloy frame fastened at the top surface perimeter. The base is angled slightly proximate each of its ends. The frame is filled with a porous thermoplastic resin. The wakeboard further includes a novel binding system having a foot plate, a footpad, and a strap system. The bindings are secured to the base with mounting bolts having handles or knobs. The foot plate includes arcuate slots at each side of the footpad, each arcuate slot having a several transverse slots. Simple manual loosening of the mounting bolts permits multidirectional adjustment of the binding without the need to remove any part of the binding system from the board.

Abstract: A roller cover washer is provided, including a hollow pipe handle connected by a swivel-type adaptor to a water supply. The handle terminates in a water outlet end including a threaded end coupled to a T-connector and having pipe extensions perpendicular to the handle and capped at their ends. The water outlet end is covered by a cylindrical housing partly closed at each end by semicircular splash shields. Each pipe extension includes a plurality of apertures adapted to direct a fanned spray of water at an angle onto the roller's circumference. A roller cover on a roller assembly can be inserted into the housing pipe through either of the openings at the ends. When in use, the roller spins rapidly as paint is diluted and forced from the cover both by the water spray and by the centrifugal force induced from the spinning roller. Paint and water are ejected from the cover and drain into the housing and out the open ends of the housing.

Abstract: Cooking Utensil comprising a cooking pan, the pan having a flat circular bottom approximately nine inches in diameter, the pan having an angled rising surface approximately two inches above the circular bottom, the angled rising surface terminating in an annular surface having an outer perimeter of twenty four inches, the annular surface having a five degree slop toward the central nine inch diameter portion, the outer perimeter terminating in a vertical lip approximately two inches tall, the pan being made of anodized aluminum, the pan being alternately made of stainless steel, and the pan having opposing carry handles.

Abstract: A gravity flow sludge load-out system for rapid and accurate loading-out of large volumes of treated biosolids from a wastewater dewatering plant, said system includes a plurality of hoppers 12, 14 supported by a main structure 16 having a plurality of vertical support members 20, each resting on a load cell 28, a sludge inlet at the tip of each hopper, and hydraulically controlled metering gates 40 at the bottom. A PLC 70 controls delivery of sludge from a dewatering facility, including e.g. a dewatering centrifuge 56, into the hoppers and then controls load-out of the sludge to a container truck by providing real-time monitoring of net sludge load-out and tight control of metering gates.

Abstract: A cone rock crusher for crushing rocks into sized aggregate material, including an improved protective seal that prevents external contaminants from entering the crusher's lubrication system. The seal is a rotating, self-cleaning, socket sealing ring with a magnetic safety release device which protects the flexible membrane seal from damage.

Abstract: A tool that enables the forming of a hole in irrigation pipe, and the placement of an emitter device into that formed hole, includes a pair of elongate plier half-members connected at a pivoting joint. A first jaw includes an inwardly-directed hole punch member, while the second opposed jaw includes an inwardly-directed concavity to engage a piece of irrigation hose, such that closure of the jaws causes the hole punch to pierce a hole in the irrigation pipe. The jaw ends each include semi-cylindrical cavities sized to hold the cylindrical body of an emitter, to facilitate forcible insertion of the spike of the emitter into the hole previously formed in the irrigation pipe.

Abstract: A concrete hose end insert for controlling the discharge of concrete from a concrete hose, having a base member and clamps for securing the insert to a concrete hose end, and having a vertical insert member for positioning within the interior of a concrete hose end. The hose insert momentarily interrupts the concrete free fall, causing the concrete to recombine or partly compact immediately prior to reaching the discharge end of the hose, thereby reducing the velocity of the discharging concrete for more highly controlled placement.

Abstract: An improved cell culture plate for in vitro cultivation of cells and/or tissue cultures, the cell culture plate comprising a base member and a flat removable lid, the base having the external dimensions of a standard cell culture plate and further having multiple sets of open-topped wells. Each set of wells comprises two or more wells of increasing area and volume, and the collection of sets are preferably arranged in side-by-side columns, each column being adapted for use in cell or tissue culture expansion. The sizing and configuration of the wells enables cell culture expansion through the use of a single cell culture plate, rather than through use of a series of plates having wells of increasing size and volume.

Abstract: A gut-clamping mechanism for use in stringing tennis, badminton, squash, and racquetball rackets. The apparatus includes a support post erected on a clamp block, a pair of holders wherein one holder is secured onto the top edge of said support post and the other holder is provided on the first holder in a detachable manner and such that an expanding coil spring is inserted between them. A pressing plate that has a shaft that goes through the pair of holders when the holders are joined together and with a fastening, adjusting nut hinged on the screw unit that is etched and provided at the tip of said shaft. A clamp handle is axially attached to an edge of the pressing plate, wherein a freely rotating roller is axially attached to the part that comes into contact with the side of the holder secured onto the support post in the clamp handle.

Abstract: A traffic warning system which alerts approaching vehicle traffic to the presence of a pedestrian in a crosswalk. The system includes a plurality of surface mounted lights partially embedded in and placed across a roadway. The lights are activated by the pedestrian, either by manual switch or by a sensor, before he enters the crosswalk. Once activated, the flashing lights warn drivers of approaching vehicles that the pedestrian may have entered the crosswalk, and that caution should be exercised.

Abstract: A quick-release apparatus for use with slide hammers includes a shaft adapter portion which is threaded onto the slide hammer shaft and at least one tool adapter portion which is threaded onto the hook or tool to be used. The shaft adapter portion and tool adapter portion are mechanically engaged and disengaged by pulling down on the locking collar on the shaft adapter portion and turning the tool adapter portion ninety degrees, then sliding the tool adapter portion off the shaft adapter. The same or different tool can then be installed by aligning the shaft adapter lugs with the slots on the tool adapter and pushing the tool adapter on, then turning the tool adapter ninety degrees until the positioning lugs on the locking collar engage.

Abstract: A method for holding eyeglasses using a magnetic force means in cooperation with a magnetically saturable keeper element whereby a convenient removable and reusable non-invasive securing system is created which may be used on apparel and other surfaces.

Abstract: An adjustable jumping apparatus having a hollow housing with handlebars for a rider to hold and reinforced foot pegs for a rider to stand upon. A pole extends downwardly from the housing, has a ground-engaging base, and slides in and out of the housing through a sleeve integral with the lower end of the housing. The device is propelled by at least one bungee cord attached at its upper end to a disc integral with the upper end of the pole and at its lower end to the interior surface of the lower end of the housing. The device is adapted for easy installation and removal of bungee cords for adjusting the amount of rebound force available to the user.

Abstract: A conductive yoke is provided insertable into a backshell adapter to provide a convenient shielding termination system for grounding braids and shields of conductors in a multiconductor cable to be connected to and grounded at a multipin electrical connector, the yoke providing ease of connection of such braids and shields to it and having direct electrical contact to the grounded surface of the connector.