A device for dispensing a material has a container for holding the material, a piston movably arranged within the container and a spindle in cooperation with the piston. The device is configured such that the spindle and the container are rotatable relative to each other to move the piston for dispensing the material. The piston and the spindle are adapted to anti-twist lock against each other in a first axial position of the piston relative to spindle. And in a second axial position of the piston relative to spindle the anti-twist lock between the piston and the spindle is suspended. The device helps minimizing any residual dental material upon attempting to empty the device.

Methods, apparatus, devices and systems for mixing and dispensing multi-component materials. The mixing and dispensing may be performed using a mobile, enclosed dispenser that can be used to supply a mixed multi-component material at the point of use. In some embodiments, the components to be mixed into the multi-component material may be supplied in cartridges.

A driving device of caulking gun includes a housing, a driving assembly, a threaded rod, and a transmission assembly. The housing defines an axial direction. The driving assembly is disposed on the housing and includes a motor assembly and a driving gear. The motor assembly and the driving gear are linked-up to rotate simultaneously. The threaded rod is slidably disposed on the housing and is nonrotatable with respect to the housing. The threaded rod is formed with a spiral groove. The transmission assembly is arranged in the housing and includes a transmission sleeve and a plurality of abutting members. The transmission sleeve is sleeved onto the threaded rod and is radially formed with a plurality of through holes. The abutting members are received in the through holes respectively. The transmission sleeve and the driving gear are linked-up.

The mixing device of cell printing composition according to the present disclosure comprises a first syringe comprising a first container for containing first liquid, a first moving element discharging the first liquid contained in the first container; a second syringe comprising a second container for containing second liquid, a second moving element discharging the second liquid contained in the second container; a mixing container which comprises a rotating mixing unit and receives the discharged first liquid and the discharged second liquids; a power transmission unit for driving the first moving element, the second moving element and the mixing unit; a first threaded guide where the first moving element is movably connected; a second threaded guide where the second moving element is movably connected; and a rod for rotating the mixing unit.

A dispenser (1) suitable for delivery of a cream, gel or soft solid composition comprising: (vi) a convex applicator surface (6) at an upper end; (vii) a replaceable cartridge (12) containing a composition to be dispensed; (viii) a passageway between the cartridge and the applicator surface; (ix) a drive mechanism for forcing the composition from the cartridge through the passageway and onto the applicator surface; and (x) an outer body (3) containing features (ii) to (iv); the drive mechanism comprising a dial unit (4) and a plunger (47), rotation of the dial unit (4) in a first direction advancing the plunger (47) axially upwards, the plunger (47) acting upon a piston seal (8) at the base of the replaceable cartridge (12), thereby forcing the contained composition upwards and outwards through the passageway and onto the applicator surface (6); rotation of the dial unit (4) in a second direction, counter to the first, rotationally re-setting the dial unit (4) relative to the plunger (47) in readiness for a further advancement of the plunger (47), rotation in the second direction not causing significant axial movement of the plunger (47).

A manual mixing apparatus that contains two dual chambers with each of the chambers containing a separate and distinct chemical or liquid. Further, the apparatus has a rotatable base that allows the chemicals to be forced out of a nozzle as the base is rotated through a pair of expansion members respectively affixed to moving rear walls which move longitudinally to push a respective chemical into a front mixing tip from which the combined chemicals are discharged.

Described are metering dispensers having a body configured to hold a flowable composition in a chamber, a drive screw coupled to the body, and a plunger threadingly coupled to the drive screw. The plunger includes at least two annular lips that form a fluid seal with the chamber as the plunger travels along the drive screw through the chamber. A base is rotationally coupled to the body with a cam that contacts at least one tab extending externally from the body so that the tab enters at least one low point on the cam by traveling over a trailing edge of the low point, and the trailing edge then prevents the tab from exiting the low point in the direction of the trailing edge.

A dispensing device having an elongated dispenser body which is elliptical in cross-section through its midsection, has an open top end, and has a dispensing bottom end; a cylindrical ratchet support member which is removably disposed within the open top end of the dispenser body, wherein the ratchet support member comprises a through hole one and or more ribs disposed on the inside of its circumferential sidewall; and a wheel-shaped ratchet which is removably disposed within the ratchet support member, wherein the ratchet has radially extending teeth which are configured to engage with the ratchet support member ribs, the ratchet configuration allows rotary motion in a first direction over the ribs, the ratchet configuration prevents rotary motion in a second, opposite direction past a point defined by the ribs, and the ratchet comprises ribs disposed on the top surface of the ratchet wheel.

The present invention is directed to a dispensing device for the dispensation of a fluid substance. Aspects of the present invention include dispensing a viscous fluid in a measurable and repeatable manner with a single hand. The dispenser of the present invention can be used for a number of intended purposes including use with viscous fluids such as those associated with cannabis or tobacco consumption.

Described are metering dispensers (10) having a body (100) configured to hold a flowable composition in a chamber, a drive screw (300) coupled to the body, and a plunger (400) threadingly coupled to the drive screw. The plunger includes at least two annular lips (416) that form a fluid seal with the chamber as the plunger travels along the drive screw through the chamber. A base (200) is rotationally coupled to the body with a cam (208) that contacts at least one tab (114) extending externally from the body so that the tab enters at least one low point (222) on the cam by traveling over a trailing edge (226) of the low point, and the trailing edge then prevents the tab from exiting the low point in the direction of the trailing edge.