A method for controlling a device for metering granular material and a metering device for metering granular material comprises a feed for the granular material from a container into a metering chamber. A metering piston can be actuated by a control device such that a gap between the feed and the metering chamber is opened by a predefined first distance and a second distance which is greater than the first distance. At least one sensor is arranged in a delivery line leading away from the metering chamber and is connected to the control device so that the metering piston can be actuated for a predefined duration such that the gap between the feed for the granular material and the metering chamber can be opened by the second distance if a blockage of the granular material is detected by the at least one sensor, so that the blockage is dispersed.

The present disclosure provides a metered dosing assembly configured to dispense a volume of fluid into a container that is selectively sealed by a closure valve having a closure valve member that is movable between sealed and unsealed positions with respect to the container. The metered dosing assembly includes a housing having an interior cavity. A valve is locatable at an end of the housing. The valve includes a valve member, a pin extending from the valve member, and at least one spring leg attachable to the valve member. The pin extends from the valve member and is configured to engage the closure valve member of the closure valve to move the closure valve member to the unsealed position and move the valve member to an open position with respect to the housing. When the valve member is moved to the open position and the closure valve member is moved to the unsealed position, fluid communication is made between the metered dosing assembly and the container.

A fluid dispenser having a pump mechanism that dispenses a dose of fluid when a movable pump member of the pump mechanism is moved between an extended position and a retracted position. A pump engagement body engages with the movable pump member for effecting movement of the movable pump member. A first cam surface and a second cam surface are connected to the pump engagement body, at least one of the first cam surface and the second cam surface comprising an adjustable cam surface whose location relative to the pump engagement body is selectively adjustable. A camming body engages with the first cam surface and the second cam surface to effect movement of the pump engagement body, and a dose adjustment mechanism allows the location of the adjustable cam surface relative to the pump engagement body to be selected.

A dispensing mechanism for delivering a dosage of medicament including a housing having a proximal-distal axis; a plunger rod having a screw thread and configured to advance along the proximal-distal axis relative to the housing; a user-operable push button moveable along the proximal-distal axis relative to the housing; a twist driver threadably engaged with the push button such that movement of the push button towards the distal end of the housing causes rotation of the twist driver about the proximal-distal axis; and a driver engaged with the twist driver such that rotation of the twist driver causes rotation of the driver, the driver also engaged with a portion of the plunger rod such that rotation of the driver causes rotation of the plunger rod, advancing the plunger rod along the proximal-distal axis relative to the housing.

A dispenser includes a dispenser body and a base, wherein the base is attached to the dispenser body and a piston in the base is seated in a fluid passage of the dispenser body to define a dispensing chamber which may be filled by movement of the dispenser body relative to the base and emptied by the return of the dispenser body to the original position relative to the base.

A dispensing mechanism for delivering a dosage of medicament including a housing having a proximal-distal axis; a plunger rod having a screw thread and configured to advance along the proximal-distal axis relative to the housing; a user-operable push button moveable along the proximal-distal axis relative to the housing; a twist driver threadably engaged with the push button such that movement of the push button towards the distal end of the housing causes rotation of the twist driver about the proximal-distal axis; and a driver engaged with the twist driver such that rotation of the twist driver causes rotation of the driver, the driver also engaged with a portion of the plunger rod such that rotation of the driver causes rotation of the plunger rod, advancing the plunger rod along the proximal-distal axis relative to the housing.

A quantitative pressing structure is disclosed herein. It comprises a pressing structure; an assembling seat disposed on the pressing structure for assembling at an opening of a container; a piston tube disposed at a bottom of the assembling seat and comprising a piston having a piston rod accommodated therein; a lid disposed at a top of the piston tube and having an outer casing protruded thereon and correspondingly disposed on a periphery of the piston rod, wherein an upper end of the piston rod of the piston penetrates the lid; a pressing portion disposed at a top of the piston rod; and a plurality of limiting kits having different heights for limiting a pressing down degree of the pressing portion, wherein each of the plurality of limiting kits has a slot for assembling on the outer casing of the lid.

A dispenser includes a dispenser body and a base, wherein the base is attached to the dispenser body and a piston in the base is seated in a fluid passage of the dispenser body to define a dispensing chamber which may be filled by movement of the dispenser body relative to the base and emptied by the return of the dispenser body to the original position relative to the base.

A dropper machine for pouring a measured amount of a substance in a plurality of receptacles, including: a reservoir containing the substance to be dropped, cylinder and piston metering devices, a drive unit arranged to simultaneously drive the piston of the metering devices wherein each of the metering devices is associated with a respective actuating device cooperating with the piston of the metering device, the actuator device being operable individually to inhibit the delivery of the substance to be dropped through the nozzle when the drive unit is actuated to cause displacement of the pistons of the metering devices associated therewith between the start position and the end position.

There is provided a pipette for aspirating and/or dispensing liquids, comprising a pipette tip and a plunger. The pipette tip has a proximal end and a distal end defining a longitudinal axis therebetween; an aperture at the distal end, and a fluid cavity extending from the aperture at least partially towards the proximal end. The plunger is positioned inside the pipette tip, and extends at least partly between the proximal and distal ends of the pipette tip into the end portion, and is movable towards and away from the aperture to aspirate or dispense fluid from the pipette tip. The pipette tip has an end portion disposed at the distal end, having an inner wall surface extending at an angle of between 2 degrees and 5 degrees relative to the longitudinal axis, for at least 5 mm.