A method for dispensing fluid from a fluid dispensing apparatus. The apparatus may include a housing, wherein the housing may include a motor, and wherein the motor may be configured to be operatively connected to a power supply, wherein the motor may be further configured to be operatively connected to one or more drive rods, wherein the one or more drive rods may be configured to engage a fixed lead screw with a triangular nut, and wherein the drive rod may be further configured to engage at least two pistons of a fluid cartridge. The housing may include a controller configured to be operatively connected to the power supply, the controller may be configured to generate a pressure within the fluid cartridge by adjusting, via the motor, the drive rod and piston in a first direction relative to the fluid cartridge to dispense fluid in the fluid cartridge.

A dispensing device for dispensing a viscous material from a cartridge received in the device includes a main housing, a front support, a rear plunger assembly, a motor, and gear assembly. The rear plunger assembly is spaced apart from the front support by an elongate member. The rear plunger assembly includes a plunger plate supported in a plunger housing above a cutting edge. The rear plunger assembly is rotatable about an axis parallel to the longitudinal axis of the elongate member. The motor and gear assembly are disposed in the housing and are engageable with the elongate member to move one of the front support and the rear plunger assembly toward each other, thereby urging the cutting edge of the rear plunger assembly against an edge of the cartridge as the plunger plate is driven against the cartridge to expel the viscous material from the cartridge.

A fluid dispenser and method for simultaneously dispensing fluids from first and second cartridges. The fluid dispenser includes a base structure and a cartridge holding assembly mounted to the base structure. The cartridge holding assembly includes first and second cartridge holders. A linear drive mechanism is mounted to the base structure and coupled with first and second drive pistons force fluids through fluid passages. A dispensing portion is provided in first and second sections for easy cleaning.

An automatic gluing machine includes an automatic gluing mechanism. The automatic gluing mechanism includes a sleeve, a pushing component mounted to the sleeve, an assembling head, and a driving module including a gear module. The sleeve is equipped with a first sleeve gear. The pushing component includes a rotating body and a first rotary gear. The assembling head is assembled inside the sleeve. The gear module cooperates the first rotary gear to drive the rotating body to rotate bidirectionally. The gear module cooperates with the first sleeve gear to make the sleeve to rotate in a single direction. A rotation speed difference between the first rotary gear and the first sleeve gear is generated, so after every rotation of the assembling head, a single-direction rotation displacement of the assembling head is generated relative to a last rotation of the assembling head.

An automatic gluing machine includes an automatic gluing mechanism. The automatic gluing mechanism includes a sleeve, a pushing component mounted to the sleeve, an assembling head, and a driving module including a gear module. The sleeve is equipped with a first sleeve gear. The pushing component includes a rotating body and a first rotary gear. The assembling head is assembled inside the sleeve. The gear module cooperates the first rotary gear to drive the rotating body to rotate bidirectionally. The gear module cooperates with the first sleeve gear to make the sleeve to rotate in a single direction. A rotation speed difference between the first rotary gear and the first sleeve gear is generated, so after every rotation of the assembling head, a single-direction rotation displacement of the assembling head is generated relative to a last rotation of the assembling head.

A driving device of a metering and mixing apparatus for multi-component substances is disclosed, which driving device can have at least two cartridge holders for holding interchangeable cartridges with individual substance components, a discharging apparatus for simultaneously discharging the substance components from the cartridges through component outlets with the aid of discharging pistons entering the cartridge holder or cartridges, and a mixing apparatus which is connected to the component outlets, for mixing the discharged substance components and discharging the latter in mixed form, and a transmission unit for the connection of a drive motor, wherein the transmission unit can have a detector for detecting at least one counter pressure which builds up during the discharging of at least one of the substance components, and a controller, which is connected on an inlet side to the detector for bringing about a driving control function in response to a detection result.

Self-venting nozzles and nozzle attachments adapted to vent a gas entrained in a fluid to an atmosphere are described. The nozzles or attachments comprise a nozzle inlet end, a nozzle outlet end, a nozzle wall extending between the nozzle inlet end and nozzle outlet end and having an interior surface defining a fluid channel surrounding a nozzle flow axis, and one or more vent passageways providing fluid communication between the fluid channel and the atmosphere. Nozzle systems comprising the self-venting nozzle and a dispenser, as well as methods of dispensing a fluid having a gas entrained therein are also described.

A mortar applicator includes: a duct; a piston movably mounted within the duct, dividing the duct into first and second variable volume chambers; a pump fluidly connected to the first variable volume chamber; a nozzle operatively connected to a first end of the duct to discharge mortar contained in the first variable volume chamber; and a motor operatively connected to the piston. A rack and pinion assembly operatively connects the motor to the piston and includes a rack configured to drive the piston and a pinion connected to the motor. In a discharge mode, the motor drives the rack and pinion assembly, moving the piston to force mortar through the nozzle opening to discharge mortar from the mortar applicator. In a refill mode, the pump fills the first variable volume chamber with mortar, forcing the piston to retract. The rack moves with the piston in the discharge and refill modes.

An attachment device for attachment to a drive device including a receptacle for a fluid container and a pressing device for pressing the fluid container, to effect the dispensing of fluid contained in the fluid container. The pressing device serves to lock the fluid container in the receptacle so that the fluid container cannot be removed from the receptacle. The attachment device further includes a stabilizing handle and an actuating element operable by the user to release the locking of the fluid container in the receptacle so that the fluid container can be removed from the receptacle, and in which the stabilizing handle is the actuating element or the actuating element is arranged in the region of the stabilizing handle so that the user can actuate the actuating element with his hand while the user grips the stabilizing handle with this hand.

An apparatus for removably retaining a single use cartridge and dispensing at least one compound from the single use cartridge. The apparatus includes a dispensing pen having a housing which includes a source of electricity, an electric motor, a gear assembly and a moving shaft with a multiplicity of teeth to cause an advancing shaft to move forwardly toward the front of the pen and interact with a piston to push a plunger at the rear of the cartridge so that it will dispense compounds from the cartridge. The cartridge can be a single chamber cartridge or a dual chamber cartridge or a dual chamber cartridge separated by a dividing wall. There can be any numerous compounds including teeth whitening compounds, nail polish, cosmetics, etc.