Abstract: A multi-function heat exchanger for use with a dispensing gun for dispensing hybrid plastisol hot melt material, the heat exchanger having an elongated tubular high temperature heater assembly having a front end hydraulically connected to an inlet port of a dispensing gun and a rear end connected to a heat dissipating assembly which in turn is connected to the outlet end of a supply hose for providing hybrid plastisol material which is liquid at room temperature and under sufficient hydraulic pressure to move the plastisol material through the heat dissipating assembly and the high temperature heater assembly into the dispensing gun when the gun is operated. The heater assembly has a heat source providing sufficient heat to turn the plastisol into a molten liquid as it passes into the dispensing gun. The heat dissipating assembly prevents heat from the high temperature heater assembly from migrating back into the plastisol supply hose.

Abstract: A multi-function heat exchanger for use with a dispensing gun for dispensing hybrid plastisol hot melt material, the heat exchanger having an elongated tubular high temperature heater assembly having a front end hydraulically connected to an inlet port of a dispensing gun and a rear end connected to a heat dissipating assembly which in turn is connected to the outlet end of a supply hose for providing hybrid plastisol material which is liquid at room temperature and under sufficient hydraulic pressure to move the plastisol material through the heat dissipating assembly and the high temperature heater assembly into the dispensing gun when the gun is operated. The heater assembly has a heat source providing sufficient heat to turn the plastisol into a molten liquid as it passes into the dispensing gun. The heat dissipating assembly prevents heat from the high temperature heater assembly from migrating back into the plastisol supply hose.

Abstract: A float actuated drain system for reservoirs containing pressurized air and/or liquids such as drain valves for traps used in the accumulation of condensate materials from pneumatic systems opens and closes a drain valve depending upon the water level in the reservoir. The drain valve uses internal pressure released from within the reservoir through a normally closed orifice and passing through a tube to operate a drain valve actuator. A lever pivotally mounted inside the reservoir has a float on one end and a stopper on the opposite end which closes the orifice when the liquid level in the reservoir is low and which moves away from the orifice when the fluid reaches a high level in the reservoir to release pressure through the orifice to operate the valve actuator and open the drain valve. After the liquid drains from the reservoir, the float moves to a lower position and the stopper closes the orifice.

Abstract: An automatic float-activated drain valve for a liquid reservoir used in the accumulation of condensable materials and other contaminants from pneumatic systems and the like. The float is connected by a flexible tether to a lever arm which opens a pilot valve when the reservoir fills with water and the float moves to the top of the reservoir. The pilot valve permits air pressure to flow to an actuator which opens the drain valve. The pilot valve is in communication with a check valve which releases air pressure into the interior of the reservoir to rapidly expel water through the drain valve when the pilot valve is opened.

Abstract: A key duplicating machine having a key clamping assembly for supporting a key blank and a customer key to be duplicated, a key cutter assembly having a cutter wheel for cutting a pattern on the supported key blank and a follower for tracing a tooth patter on the supported customer key, a housing having a front wall, a top wall and a chip collection drawer lcoated below the front and top walls, the key clamping assembly being mounted on the front wall and the key cutter assembly being mounted on the top wall such that no obstructions exist between the key cutter assembly and the chip collection drawer located below the top wall, so that chips formed from a key cutting operation by the key cutter assembly fall unimpeded to the chip collection drawer, and surfaces which may collect the chips are minimized.

Abstract: A laterally adjustable armrest for a chair comprising a support mounting plate attachable to a support that is adapted to be on the chair and an armrest mounting plate provided with pivot mechanisms whereby the armrest mounting plate is permitted lateral movement in respect of the support mounting plate.

Abstract: A portable lightweight gas generation device which can be attached to a container to generate a quantity of gas from a mixture of two chemically reactive materials and to inject the gas into the container. The device is especially useful as an apparatus for rapidly carbonating liquid beverages with chemically generated carbon dioxide produced in a gas generation chamber located inside a pressure vessel attached to a liquid container which serves as a carbonation chamber containing the liquid to be carbonated. The generated carbon dioxide is passed from the gas generation chamber to the carbonation chamber to carbonate the liquid. This device can also be used as a means of injecting pressurized gas into a pressurized spray can for dispensing liquids such as paint, hair spray or other sprayable products.

Abstract: A beverage carbonator constructed as a pitcher shaped pressure vessel which functions as a carbonation chamber and which has a water canister and a gas generation chamber removably positioned inside the carbonation chamber. Carbon dioxide is produced by releasing internally stored water from the water canister into a carbon dioxide generating chemical in the gas generation chamber and then the carbon dioxide passes into the carbonation chamber where it is dissolved into a liquid beverage.

Abstract: An automatic float-activated drain valve for a liquid reservoir used in the accumulation of condensable materials and other contaminants from pneumatic systems and the like. The float is connected by a flexible tether to a lever arm which opens a pilot valve when the reservoir fills with water and the float moves to the top of the reservoir. The pilot valve permits air pressure to flow to an actuator which opens the drain valve.

Abstract: A beverage carbonator having a pitcher shaped carbonation vessel which is detachably pneumatically connected to a reaction vessel in which carbon dioxide is produced by releasing internally stored water into a carbon dioxide generating chemical and passing the carbon dioxide into the carbonation vessel where it is dissolved into a liquid beverage. The carbonation vessel can be reconnected to the reaction vessel to recarbonate the unused portion of the beverage after it loses carbonation over a period of time and then disconnected for pouring the remainder of the beverage from the carbonation vessel.

Abstract: A process and apparatus for rapidly carbonating water for use in applications such as beverage mixes by producing carbon dioxide gas by chemical reaction within a first pressure vessel, transferring the carbon dioxide to a second pressure vessel where it is injected under pressure beneath the water in the second pressure vessel to carbonate the water therein while maintaining sufficient pressure to prevent dissolved carbon dioxide from coming out of solution in the water and for dispensing the carbonated water upon demand. Restrictive venting of the second pressure vessel may be used if needed, to aid in the transfer of carbon dioxide from the first to the second pressure vessel.

Abstract: A keyboard support assembly for a computer work stand is disclosed comprising a subplate (74) having a profiled opening (98, 100) along each side, and a keyboard support plate (78) residing on top of the subplate. A pair of pivotal locking devices (138) are attached to the underside of the keyboard support plate to depend into the subplate profiled openings, and to selectively engage against an underside of the subplate as the keyboard support plate is slideably re-positioned thereon. The locking devices (138) include gear teeth 140 which engage with a gear rack segment 102 along the subplate underside.

Abstract: A venturi spray nozzle having a cleaning fluid manifold with a plurality of fingers extending into a plurality of venturi nozzle channels of an air manifold such that the air manifold educes cleaning fluid from the cleaning fluid manifold and projects it on a surface to be cleaned. The cleaning fluid manifold is centrally positioned in the air manifold and a pressurized source of cleaning fluid is used.

Abstract: An adjustable work table is disclosed comprising a frame having spaced apart sides (6), a horizontal shaft (60) supported between the sides of the frame, and a table surface assembly (10) rotatively mounted to the shaft. Camming angular adjustment means (98, 110) is provided for rotating the table surface assembly into selective angular positions about the shaft. Vertically actuating scissor arms (44, 46) are further provided for moving the support shaft upward and downward whereby providing a vertical adjustment.

Abstract: An in-line switch and mixer control including a first restriction adjacent the outlet of a mixing device having a cleaning fluid and water inlet for controlling the flow rate from the mixer and a second restriction connected to the water inlet for varying the restriction of the water inlet to determine the mixing ratio. Initially, the first restriction is totally closed preventing any flow from the mixer and the second restriction is initially unrestricted. The first and second restrictions include a common actuator for sequentially operating the first and second restrictions to various intermediate restrictive positions.

Abstract: A fluid circuit for a cleaning device having a mixture with separate water and cleaning fluid inlets and fittings interconnecting a pressurized source of water and a pressurized source of cleaning fluid responsive to change the mixing ratio of cleaning fluid to water as well as to assure the degree of mixing. The outlet of the mixing device is provided to a spray nozzle wherein the mixed fluid is projected onto a cleaning surface by an air stream through the spray nozzle. A common pump provides two levels of air pressure, a high one to the spray nozzle and a lower one to the pressurized sources of water and cleaning fluid.

Abstract: A separator for a cleaning device having the air-liquid mixture introduced tangentially about the periphery of the conical shroud and the air outlet being interior the shroud.

Abstract: A spotting control and trigger assembly having a first actuator for selecting the flow rate and a second actuator for selecting the mixing ratio of a control element which determines the flow rate and mixing ratio of water to cleaning fluid in a dispensing device. First and second actuators are interconnected to each other and are connected to the mixing and flow rate control by a common linkage.