Abstract: Hand-held tear gas canisters and personal security devices utilizing same are herein disclosed. A tactile element, preferably in the form of an elongate ridge or rib, is provided on the outer surface of the canister, or on a holster which receives the canister, to facilitate orientation of the canister with a gas discharge nozzle thereof pointing away from the user. In use, by feeling the position of the ridge or rib, the user will be aware of the direction of gas discharge and can thereby avoid misdirection of the gas.

Abstract: A repeating dispenser comprising a tubular main body, an actuating member slidably disposed in the main body with the upper end thereof projecting out of the upper end of the main body and having a pressure button thereon, a spring for biasing upwards the actuating member, a spring retainer slidably disposed in the main body and abutting normally with the lower end of the actuating member to transmit the biasing force of the spring to the actuating member, a stop provided on the inner surface of the main body for abutting with the spring retainer in the non-actuated condition of the dispenser, a pawl pivotally connected to the spring retainer, a pawl spring for biasing the pawl in the radially outward direction, a rack shaft slidably provided on a side surface of the main body and having a plurality of rack teeth thereon for engaging with said pawl, a device for preventing the pawl from engaging with the rack shaft when the spring retainer abutting with the stop, a suction button connected to the rack shaft a

Abstract: A cylindrical container for viscous material has a first open base end of a first diameter and a spaced opposite closed base end with an opening therethrough of a second diameter smaller than the first diameter. A cylindrical plunger of a third diameter slightly smaller than the first diameter is coaxially slidably mounted in the container in a snug manner. The plunger has a closed plunger head perpendicular to its axis. A positioning device selectively positions the plunger and the container relative to each other at a plurality of different axial positions. The plunger, at each of the axial positions, forces a predetermined measured amount of the viscous material out of the opening of the container.

Abstract: A dispensing cartridge or other similar container having a piston-type closure at one end and an apertured dispensing wall at its other end which may be covered by a cover or cap. The piston-type closure is a rigid structure which includes a sealing ring to engage the container sidewall, a centrally-located filling aperture and a integrally-molded, detachable plug that is aligned to the aperture and adapted to be forced into the aperture to close and seal the container after filling. The plug is attached to the piston closure by several frangible elements and the container is filled via the gaps formed between these elements.

Abstract: The invention is an improved liquid measuring device which can be used as a proportioner, dispenser or flow meter for a single fluid or for an unlimited number of fluids. The device embodies a free-floating piston sealed within a cylinder capped at both ends, a high-resolution detector system, either optical or electrical, to accurately determine the piston location within the cylinder, and a microprocessor which converts the lateral movement of the piston within the cylinder into volume measurements of the fluid in the cylinder.

Abstract: A child resistant assembly is disclosed for use with an aerosol container having a valve. The assembly comprises an actuator button having a terminal orifice connected through a valve stem to the valve for enabling discharge of the aerosol product from the terminal orifice upon opening the valve. An overcap is rotatably secured to the aerosol container and includes a finger actuator movably mounted relative to the overcap. A non-symmetrical aperture is disposed in either the actuator button or the finger actuator for cooperation with a non-symmetrical member in the other of the actuator button and the finger actuator. The non-symmetrical member enters the non-symmetrical aperture for transferring the finger movement of the operator to open the valve only upon a selected orientation of the finger actuator relative to the actuator button.

Abstract: A beverage dispensing system which lessens confusion and operator time by providing a control switchset with only a small number of selection switches to send encoded signals to an electronic control which decodes the selection data and selects ingredients to be dispensed from more numerous types of ingredients stored remotely. An electronic control regulates the volume dispensed by counting electronic volume related signals sent from each liquid delivery pump shaft as ingredients are dispensed, and stopping that particular delivery pump when a predetermined number of signals have been delivered. Switches are provided to electronically alter the number of counts necessary to stop the delivery pump for one ingredient for one dispensing cycle or for all ingredients for a period of time. The electronic control is capable of storing a first ingredient selection and simultaneously by dispensing a plurality of ingredients upon receiving a second selection.

Abstract: A new circuit is added to an electrical circuit including two electrodes underwater positioned very close to an air gun gaseous exhaust wherein the exhaust from the firing air gun momentarily blows away the conductive sea water from one or both of the electrodes to produce a high voltage pulse due to the large increase in resistance in the circuit indicating the precise moment of firing of the air gun free of any uncertainty and mechanical noise which normally affects conventional transducers.This new circuit added to the above circuit is a circuit polarity reversing circuit which includes particularly a positive current generator, a negative current generator, and a sea ground for forming a third electron source when any of the two electrodes becomes defective, thus forming a fail-safe system.

Abstract: An apparatus for liquid and gas-liquid chromatography, comprising a microliter syringe and a tubular holder wherein the syringe can be inserted. The holder is equipped with a spring system capable of moving a plunger of the syringe rapidly and a start button system capable of unlocking the locked spring.

Abstract: An improved liquid dispenser has two concentrically spaced cylinders with a pump plunger fitting the inner cylinder, an inlet check valve at the bottom of the outer cylinder, and an outlet check valve adjacent the top of the outer cylinder with a graduated stem extending upwardly from the plunger through a cap structure adapted to engage the open top of a liquid container. The pump plunger is restrained from moving upwardly out of the inner cylinder and a collar is adjustably mounted on the stem above the cap for setting the pump stroke as indicated by the graduations on the stem to thus provide a dispenser adapted to fit containers having a small opening therein.

Abstract: A method for controlling the rate of filling bottles as they are moved by a rotary table, in which position indicating devices are attached to the pistons which move the filling nozzles up and down in the vertical direction, the position indicating devices are detected just before the bottles are discharged from the rotary table to determine whether filling of the bottles is completed by means of two piston position detecting devices A and B which devices are circumferentially spaced-apart so as to define an included angle .theta. of 10.degree. to 30.degree. with respect to the center of the rotary table, and the rotation speed of the rotary table is increased or decreased so that the proportion of completely filled bottles detected by the first or leading detecting device A during each rotation of the rotary table is less than 100% but the proportion of completely filled bottles detected by the second or trailing detecting device B during each rotation of the rotary table is 100%.

Abstract: A loading device for transferring radioactive microsphere suspensions from a storage container to test apparatus having a three way stopcock including three connectors. A 1 ml syringe is connected to one of the stopcock connectors with a 5 ml syringe being connected to a second stopcock connector. A two inch cannula hypodermic needle is connected to the third stopcock connector. The hypodermic needle has airflow passages cut in the connector portion adjacent the needle.

Abstract: The present invention relates to a device for dispensing adjustable volumes of a liquid, comprising a stopper adaptable on the neck of a flask, which incorporates a device with valves; a calibrated cylinder which is mounted in the stopper and which comprises, near its free upper end, a fixed, outwardly projecting, annular stop; a calibrated cylindrical plunger adapted to cooperate with said calibrated cylinder; a body for actuating the calibrated plunger, internally defining a first cavity in which a threaded adjusting shaft is adapted to be housed, which shaft may modify the vertical position of a nut; a digital display system mounted in the upper part of the threaded shaft; a member for driving the shaft in rotation, and a connector is provided to connect the actuator body with the upper part of the calibrated plunger. The invention finds particular application in laboratory equipment.

Abstract: A system for preparation of variable hemodialysate in which a controllable pump meters multiple fluid sources of dialysate concentrates and water in controlled proportion. The system includes a plurality of cylinder and piston pump assemblies linked together for simultaneous operation. Individual valves connect the separate pump assemblies to the individual fluid sources to be proportioned. A position sensor provides signals indicative of the position of the pistons throughout their stroke cycle, and with a control operates the control valves associated with the individual pump assemblies in accord with functions of piston position and preselected proportioning control inputs, so as to control the volume of fluid metered by each of the pumps during the pump stroke.

Abstract: A self-interrupting gravity feed device for a plastic raw materials mixer comprising a vertical flow tube which reaches from above into the mixer receptacle, and a horizontal baffle arranged at a distance from the lower opening of the flow tube. The baffle is similar in shape and at least as large in diameter as the flow tube opening and it is preferably vertically adjustable in relation to the flow tube.

Abstract: The invention relates to a device for spreading distributable material, more particularly, fertilizer in granular or powdery form, said device comprising a hopper having at least one outlet port and a spreading member connected herewith and a dosing member to be adjusted for defining the passage of each outlet port, a control-mechanism moving the dosing member into a position in which the outlet port is closed or into the adjusted position; the invention has for its object to spread said material accurately and provides screw means operative between the dosing member and the control-mechanism for very sensitive adjustment said dosing member.

Abstract: A liquid dispensing device comprising a cap structure mounted on a liquid container, a cylinder extending vertically upward from the cap structure, a manually operable plunger slidable within the cylinder, an adjustment assembly for controlling the stroke of the plunger, and a discharge assembly and suction assembly respectively incorporating one-way valves therein and removably fitted in respective bores in the cap structure.

Abstract: A dispenser is provided to supply fine particulate to xerographic machines utilizing a reciprocal force to drive the dispensing means and anti-caking arms extending inside the cartridge to reciprocate through the body of particulate. A dispensing means is opposed corrugated members biased together which, on relative reciprocation, cam apart to discharge the particulate.

Abstract: A thermoplastic material dispensing apparatus adapted to translate feedstock from a solid state to a molten state by a novel heater block structure, and to discharge the molten feedstock through a novel discharge valve in response to operation of a novel trigger device. A novel annular cooling chamber is established about the dispenser's barrel to maintain a solid/melt interface inside the barrel adjacent to the heater block structure, that zone being air cooled by inlet air taken from a single inlet air line. The inlet air from the single line also drives the dispenser's ram through use of a novel pneumatic motor/spool valve mechanism. The spool valve is manually stroked forward to extend the dispenser's ram for extruding the feedstock, and is manually stroked rearward to retract the ram for recharging.

Abstract: A multiple dosage syringe comprises a hollow barrel through which a piston slides by being pushed by a piston member protruding from the rear of the barrel so that liquid material within the barrel is discharged through a discharge member at the front end of the barrel. A plurality of longitudinally spaced stops protrude outwardly from the perimeter of the piston member which protrudes from the rear of the barrel so that the foremost stop abuts a flange at the rear of the barrel. To discharge a dosage this stop is broken off along a line of maximum weakness so that the stop can enter the barrel during the discharge of the dosage which is completed when the next stop strikes the flange. This process is repeated for each dosage.