Abstract: A particle sizing sampling device to separate particles from a gaseous medium according to particle diameter so as to classify the particles which include one or more stages with a housing defining an impaction chamber therein, an impaction plate in the impaction chamber, at least one impaction nozzle which forces a jet of the gaseous medium against the impaction plate to separate those particles above the effective particle cut diameter of the stage of the sampler by jet impaction and at least one exit passage which extends through the impaction plate with an inlet spaced from the impaction plate a distance greater than the distance between the gas jet stream outlet from the impaction nozzle and the impaction plate.

Abstract: Method and apparatus for injecting fluids into patients at a controlled rate from an ampule containing the injecting fluid with a sliding piston therein to force the fluid from the ampule into the patient using a drive system which incrementally and successively advances the piston in the ampule to meter the fluid into the patient.

Abstract: The invention is a produce handling system with a self-unloading trailer and a free-standing conveyor. The trailer has an unloading conveyor in its bottom covered by removable doors. The free-standing conveyor has an infeed section that receives the produce from the trailer unloading conveyor pivoted to an out feed section which delivers the produce from the infeed section to a stacking position such as a truck.

Abstract: Apparatus and method for injecting fluids into patients at a controlled rate from an ampule containing the injecting fluid with a sliding piston therein to force the fluid from the ampule into the patient using a drive system which incrementally and successively advances the piston in the ampule to meter the fluid into the patient.

Abstract: Method and apparatus for injecting fluids into patients at a controlled rate from an ampule with a tubular side wall closed at one end with a penetrable plug and a sliding piston in the side wall to force the fluid through an opening in the penetrable member using either a long duration injector with an expelling means to move the ampule piston, drive means for operating the expelling means, and control means for incrementally and successively connecting and disconnecting the drive means to the expelling means or a short duration injector with a spring drive or a fluid pressure drive to move the ampule piston and meter the fluid through a metering device.

Abstract: A staged induction engine with an air duct therethrough open at both ends, and defining a plurality of venturis therein axially spaced from each other where each of the venturis has a throat of a diameter smaller than the throat of the next upstream of venturis, a burner unit defining combustion chamber therein, exhaust jet pumping means operatively associated with the exhaust gases from the burner unit and including a plurality of venturi jet pumping tubes corresponding in number to the venturis with each of said venturi jet pumping tubes defining an exhaust passage therethrough in communication with the exhaust gases from the combustion chamber with a downstream exhaust outlet from which the exhaust gases are discharged where one of the exhaust outlets is positioned upstream of the throat of each of the venturis so that the exhaust gases will be discharged through the throat of the venturi associated therewith to force in the air passage through the air duct upstream of the venturi through the venturi under

Abstract: A liftable tandem axle suspension for a trailer including a central trunion frame mounted on the trailer frame, a front non-liftable axle assembly pivotally mounted on the central trunion frame and extending forwardly thereof, and a rear liftable axle assembly pivotally mounted on the central trunion frame and extending rearwardly thereof so that the rear axle assembly can be lifted when the trailer is not loaded.

Abstract: A preseparator for connection to the sampling inlet of a particle sizing sampler to preseparate those particles from the gaseous medium with particle diameters above the particle diameter acceptance range of the sampler which is characterized by a housing defining a preseparating chamber therein, an impaction plate dividing the preseparating chamber into two subchambers, a preimpaction nozzle which forces a jet of the gaseous medium against the impaction plate to separate those particles above the particle diameter acceptance range of the sampler by jet impaction and at least one exit passage which extends through the impaction plate with an inlet spaced from the impaction plate a distance greater than the distance between the outlet on the preimpaction nozzle and the impaction plate.

Abstract: A registration control system for a copying machine adapted to copy images from an original document medium onto selected different length sheets of copy paper with the copying machine having cutter means for selectively cutting the sheets of copy paper to length, conveying means for transporting the cut sheets of copy paper along a conveying path through an exposure station with the image projected onto the sheet of copy paper in the exposure station where the registration control system includes a cutter actuator for causing the cutter means to cut the sheets of copy paper to length; a conveyor actuator for causing the conveying means to move the cut sheets of copy paper through the exposure station; and manually adjustable control means interconnecting the cutter actuator and the conveyor actuator to cause cutter actuator to operate the cutter means to cut the sheets of copy paper to manually selected lengths while causing the conveyor actuator to operate the conveying means so that each cut sheet of copy

Abstract: A system for reducing undue vibrations transmitted to a vehicle by a tire assembly including a tire buffing or grinding machine, a tire balancing machine, and a mounting adapter for alternatively mounting the tire assembly on the tire buffing machine and the tire balancing machine. The tire buffing machine includes a drive unit for rotating the tire assembly about its rotational axis, a loading unit for radially loading the tire assembly, a buffing unit for selectively grinding away portions of the tire tread, and a control unit interconnecting the loading unit and the buffing unit to cause the buffing unit to reduce the loaded radial runout of the tire assembly.

Abstract: A battery powered variable intensity hat mounted head lamp with a lamp shell mounting a lens and reflector assembly including an oscillator switching a power transistor mounted on the lamp shell for heat dissipation to control the lamp bulb, a printed circuit board in the lamp shell mounting the lamp bulb and the oscillator components, and a potentiometer mounted on the lamp shell for simultaneously varying both the on time and the off time in the duty cycle of the oscillator.