Abstract: An improved microprocessor-controlled dual piston-pump viscous fluid dispensing system as for dispensing uniform sealing beads and the like (as well as other types of uniform deposits), wherein the pressure throughout the fluid path is maintained constant including during the switching alternately between filled and emptying pumps of the pair, assuring a constant dispensing rate, including during the switchover of the pumps.

Abstract: An improved microprocessor-controlled dual piston-pump viscous fluid dispensing system as for dispensing uniform sealing beads and the like (as well as other types of uniform deposits), wherein the pressure throughout the fluid path is maintained constant including during the switching alternately between filled and emptying pumps of the pair, assuring a constant dispensing rate, including during the switchover of the pumps.

Abstract: A novel technique and apparatus for dispensing viscous fluids such as epoxies, urethanes, plastic adhesives, silicones and the like and particularly two-component fluid materials, that enables the injection of such fluid materials into grooves and closed cavities and the like to a defined pressure that insures complete filling, and that, additionally, provides the capability to create constant flow rate through fluid delivery through flexible hoses, particularly where the dispensing head is some distance from the fluid pumps.

Abstract: A novel technique and apparatus for dispensing viscous fluids such as epoxies, urethanes, plastic adhesives, silicones and the like and particularly two-component fluid materials, that enables the injection of such fluid materials into grooves and closed cavities and the like to a defined pressure that insures complete filling, and that, additionally, provides the capability to create constant flow rate through fluid delivery through flexible hoses, particularly where the dispensing head is some distance from the fluid pumps.

Abstract: An improved electric motor-operated, preferably hand-held, fluid dispenser, using in-line longitudinal drive racks and fluid cartridge containers dispensed by the racks, the driving (and retraction) being controlled through the use of a flat (pancake) coil spring, and the cartridge containers being mountable in an adjustable cartridge holder for accommodating different-shaped rear cartridge mounting flanges.

Abstract: An improved electric motor-operated, preferably hand-held, fluid dispenser, using in-line longitudinal drive racks and fluid cartridge containers dispensed by the racks, the driving (and retraction) being controlled through the use of a flat (pancake) coil spring, and the cartridge containers being mountable in an adjustable cartridge holder for accommodating different-shaped rear cartridge mounting flanges.

Abstract: Novel hand-held single or two-component viscous fluid material dispensing gun, particularly though not exclusively useful for dental use and the like, and using in-line longitudinal drive racks and fluid cartridge containers, the racks being driven longitudinally along a barrel by an electric motor that is preferably mounted and controlled in the handle transversely depending below the barrel.

Abstract: A fluid dispenser wherein a fixed threaded shaft carries a moveable microprocessor-controlled electric drive motor integrally provided with a shaft extension carrying a plunger for directly contacting and compressing fluid in a syringe barrel to dispense the fluid in accordance with programmed shot volume increments (as small as 0.

Abstract: A novel two-part fluid dispensing and technique using fluids of similar or widely different viscosities and in flexible plastic or similar cartridges of a similar or different volumes, and with adjustable dispensing ratios by forcing the fluids out of their respective cartridges in response to variable air pressure into a static mixer, and thence along a dispensing flexible pinch tube, the opening and closing of which is controlled by a pinch valve operated in response either to manual or micro-processor-controlled control.

Abstract: A novel totally integrated divers face mask and ultrasound underwater voice communication apparatus having integral transducer-transmit-receive-power source enclosures of low profile, flexible hands-free-voice or push-to-talk operation while submerged, and noise-cancelling microphone features for reducing bubble and vibration noise.

Abstract: A cap removal device is provided for a cellular sample treatment apparatus. The device avoids the necessity to manually remove a cap and allows an automated sequence of steps to be carried out. The device is utilized in an apparatus for treating samples of cellular materials wherein the samples are contained in a stack of sample holders and fit in a stack holding tube, open at the top with a removable cap. A transfer tube having a bottom opening to fit on the top of the stack holding tube is provided and has a drive system to move the stack from the stack holding tube to the transfer tube. The improvement includes a fork attached to the drive system for the stack removal, and a button or grooved member on the cap for engagement by the fork so that when the drive system moves upwards it lifts the cap with it.

Abstract: A magnetic lifting device for lifting a stack of specimen holders out of one tube and lowering them into another tube is disclosed. The device avoids the necessity of manual handling of the stack. In the device there are a number of stack holding tubes, each one open at the top, positioned in a circle about a vertical axis of a rotatable carousel. An indexing system rotates the carousel to selectively place one of the stack holding tubes in a treatment position. The improvement comprises a magnetizable member attached to the top of the stack of sample holders, a transfer tube having a bottom opening positioned to mate on top of the stack holding tube to hold the magnetizable member in a magnetic field, a device to raise and lower the magnetic coil about the transfer tube to raise and lower the magnetic coil about the transfer tube to raise the stack into the transfer tube allowing the carousel to be rotated, and lower the stack into another stack holding tube.