Abstract: A selectively operable removable purge unit is provided for flushing and disinfecting a primary line through which water is directed in normal operation of a dental unit to various devices in the unit, the purge unit including a solution reservoir, a double inlet single outlet router valve, an inlet air line removably connectable between a pressurized air source and either the reservoir or the router valve, and lines between the reservoir solution and the router valve and the router valve and the primary water line.

Abstract: In a method of making repositionable pressure sensitive adhesive of tacky elastomeric microspheres wherein the microspheres are polymerized and formed in an aqueous suspension which includes a surfactant, a certain amount of the surfactant is removed from the aqueous suspension after completion of polymerization of the microspheres so that a predetermined reduced amount of surfactant remains, with the result that migration of the surfactant from the adhesive is at least substantially reduced.

Abstract: A rail conversion module for a tractor allowing the tractor to be driven either on the ground or on railroad tracks wherein a hinged module frame fits under the tractor with front rail wheels on a frame front section being attached to the tractor and adapted to be raised for ground travel or lowered for rail travel and driven rear rail wheels on a frame rear section which by a hinge mounting can be raised for ground travel or lowered for rail travel.

Abstract: In a chime tube suupported by a coaxial hanger cord, a resilient clip element connecting the cord and the interior of the chime tube having two or more legs which have a straight line length longer than the inside radius of the chime tube before insertion and which bend to grip the inside of the chime tube upon insertion and hold the clip element at the desired position.

Abstract: A water activated chiming device wherein a clapper floats on a stream of water spiraling upwardly out of an open upper end of a vertical pipe so that the clapper is randomly turned and moved laterally by the water to strike adjacent chime elements.

Abstract: A photovoltaic module capable of being oriented by hand with respect to the sun, including an infinitely adjustable stand system for locating the module at its optimum orientation with respect to the sun and a multi-volt controller for regulating the power flow between the module and one or more powered devices.

Abstract: Apparatus for supporting a bag on and alongside a barrel wherein an upper frame attachable to the barrel holds an upper opening of the bag, a lower frame attachable to the barrel supports the bottom of the bag, and a spanner element connects the upper and lower frames.

Abstract: An improvement in the making of a rectangular envelope by folding adjoining triangular corner flaps on a rectangular sheet, and also in the resulting envelopes themselves and the blank sheets from which they are made, whereby certain sheet edge sections on each pair of adjoining triangular flaps become exactly aligned and partially coincident and an overlap of the last-folded closure flap is of uniform width throughout its length, all by application of particular mathematical formulae.

Abstract: In intravenous fluid injection wherein a syringe needle and surrounding sheath are inserted into a vein so that blood flows through the needle into a transparent hollow push-pull element fixed on the needle remote from its point to indicate proper vein insertion, and the needle is then withdrawn from the sheath and from a vial on the end of the sheath through an opening in the vial so that blood back-flows into the vial before intravenous fluid is introduced through the vial and sheath into the vein, apparatus for preventing blood leakage from the vial opening wherein the opening is covered with an elastomeric diaphragm through which the needle is initially pierced and which resiliently self-seals when the needle is withdrawn therefrom, and further wherein intravenous fluid is introduced through a port in the vial separate from the opening covered by the diaphragm, the vial having a substantially fixed volume which remains substantially unchanged during operation, so that upon withdrawal of the needle from th

Abstract: A method for transporting a flexible resilient strip longitudinally within a processing station so that a nominally curved lateral cross section of the strip is substantially flattened wherein the strip is advanced along an arcuate path to bend longitudinally and by that bending cause the nominally curved lateral cross section to collapse to a substantially flat lateral cross section without longitudinal tensioning of the strip.

Abstract: These gloves are capable of preventing motor vehicle operators from falling asleep at the wheel, a dangerous condition that happens to frequently. With strategically placed pressure sensors in the lining of the glove, a driver's grasp force on the steering wheel is monitored and an alarm system activated when pressure readings fall outside of accepted range. Communication between left glove and right gloves allows for control of the steering wheel with either hand.

Abstract: A clip device for holding together a plurality of spaced plastic conduits containing optical fibers wherein one-piece first and second cover members are assembled about the conduits with integral male connectors fitted within female slots in the respective cover members to hold them snugly together.

Abstract: The invention concerns the production of a pre-mixed porous polymeric composition wherein granules of rubber are encapsulated with a first pre-polymer which is cured, a second uncured pre-polymer is then mixed with the encapsulated granules in a substantially moisture-free environment, the mixture is deposited into containers substantially impermeable to water vapor and is then stored for later use so that without further mixing it may be applied to a suitable sub-base surface and the second pre-polymer is allowed to polymerize by reaction with water.

Abstract: A chime activated by a clock to sound a pleasing sound every hour, by attaching a clock to an electrical controller that operates a striker mechanism. The striker mechanism, comprising a striker ball that strikes the chime elements when rotated provides an uniquely pleasing sound. The invention also includes means of disconnecting the sound independent of clock operations as well as chime activation for a varying period or a varying number of striker rotations to provide auditory indication of the time.

Abstract: In an intravenous catheter wherein a syringe needle and surrounding sheath are inserted into a vein so that blood flows through the needle into a transparent hollow push-pull element fixed on the needle remote from its point to indicate proper vein insertion, and the needle is then withdrawn from the sheath and from a vial on the end of the sheath so that blood back-flows into the vial before intravenous fluid is introduced through a side port in the vial into the vein, the vial opening being covered with an elastomeric diaphragm through which the needle is initially pierced and which self-seals when the needle is withdrawn therefrom, the improvement of a protective enclosure for the needle wherein a housing attachable to the vial surrounds the push-pull element so that the point of the needle is enclosed within that housing when the needle is withdrawn through the diaphragm.

Abstract: A composite elastomeric article for cushioning or mounting purposes including a mass substantially of tacky rubbery solid microspheres formed by suspension polymerization and agglomerated together in substantial contact with one another.

Abstract: In snowmaking apparatus having a fan which forces air through a tubular housing, an improved nucleator assembly wherein an air-water mixture is injected at an angle into the airstream close to the downstream side of the fan and remote from the housing outlet from nozzles on vanes designed to create turbulence and wherein the air-water mixture for the nucleator is formed in a multi-passage mixing block on the exterior of the housing with the pressure of both the air and water regulated.

Abstract: A coolness storage system for a closed loop refrigeration system having a fixed capacity compressor wherein a phase change material (PCM) in a plurality of chambers around conduit runs arranged in parallel in an evaporator in the system alternately freezes and thaws to modulate the cooling effect on process air flow through the evaporator when the compressor is not operating and to extend the duration of compressor off time.

Abstract: A photovoltaic module capable of being oriented by hand with respect to the sun including an electrically activated display device for generating a visual informational display which indicates at least the power generating effectiveness of the module for its instantaneous orientation with respect to the sun, and an array of photovoltaic cells for generating a first power output for a load and a second power output for activating the display device and a third power output signal for the display device indicating the power generating effectiveness of the module.

Abstract: In a dental unit which includes various devices, one being a dental handpiece, through which water and a lubricant-disinfectant solution passes, a water line flushing and disinfecting system wherein by an arrangement of double outlet and double inlet two-way valves pressurized air can expel all water and any loose material from the water lines and the devices, then pressurized air can expel the solution through the water lines and devices to disinfect them, and finally the solution can be expelled by the pressurized air through the water lines and devices.