The invention provides a hand held dispenser which has an upper enclosure for holding material to be dispensed, the upper enclosure having an open end. The invention has a lower dispenser which is connected to the upper enclosure and which has a dispensing opening which is selectively sealed by a valve. The valve has a seal end and a valve stem end, the valve stem end operatively engaged to an elastic button. When the button is depressed, the valve seal end is pushed out of the dispensing opening, to allow material to be dispensed from the hand held dispenser and when the button is released, it elastically returns to an undepressed position, closing the dispensing opening.

A dispensing and/or dosing system for use with an inverted liquid container such as a bottle or the like for dispensing and/or dosing liquid from the bottle. The system includes an improved valve which replaces the throat plug assembly of Applicant's earlier patents. The system is entirely recyclable and is durable in use.

A dispensing and/or dosing system for use with an inverted liquid container such as a bottle or the like for dispensing and/or dosing liquid from the bottle. The system includes an improved valve which replaces the throat plug assembly of Applicant's earlier patents. The system is entirely recyclable and is durable in use.

The invention relates to a proportional volumetric doser (10) comprising a motor (20) to which a pump (30) is connected, which pump (30) comprises a tubular sleeve (80) inside which a cylinder (85) is housed in which a small doser piston (62) slides, mechanically connected to an output shaft of the motor (20), wherein an inner surface of the cylinder (85) and the small piston (62) partially define a dosing chamber (48) of an auxiliary fluid to be mixed in the motor (20) in a prefixed amount with the main fluid, where said cylinder (85) has a threaded outer portion that meshes with a threaded portion of a ring nut (70) so that a rotation of the ring nut (70) causes an axial translation of the cylinder (85) and the variation of the volume of the dosing chamber (48), said proportional volumetric doser (30) being characterized in that the sleeve (80) comprises a locking system (100) configured to mechanically lock the cylinder (85) with respect to the tubular sleeve (80) by creating a shape constraint.

The invention relates to a proportional volumetric doser (10) comprising a motor (20) to which a pump (30) is connected, which pump (30) comprises a tubular sleeve (80) inside which a cylinder (85) is housed in which a small doser piston (62) slides, mechanically connected to an output shaft of the motor (20), wherein an inner surface of the cylinder (85) and the small piston (62) partially define a dosing chamber (48) of an auxiliary fluid to be mixed in the motor (20) in a prefixed amount with the main fluid, where said cylinder (85) has a threaded outer portion that meshes with a threaded portion of a ring nut (70) so that a rotation of the ring nut (70) causes an axial translation of the cylinder (85) and the variation of the volume of the dosing chamber (48), said proportional volumetric doser (30) being characterized in that the sleeve (80) comprises a locking system (100) configured to mechanically lock the cylinder (85) with respect to the tubular sleeve (80) by creating a shape constraint.

Dosing unit for dosing liquids, having a fluid unit for selectively providing an overpressure and a negative pressure on a working gas, which is accommodated in a fluid channel which is connected at a first end region to the fluid unit and which includes a second end region, having a first valve unit and having a second valve unit, which are arranged spaced apart from one another along the fluid channel and are each designed for selectively blocking or releasing the fluid channel in order to form in the fluid channel a fluid reservoir which is delimited by the two valve units and is provided for storing working gas, having a control unit for controlling the valve units, the fluid reservoir being assigned a pressure sensor which is designed to provide a pressure signal as a function of a working gas pressure and is electrically connected to the control unit.

Dosing unit for dosing liquids, having a fluid unit for selectively providing an overpressure and a negative pressure on a working gas, which is accommodated in a fluid channel which is connected at a first end region to the fluid unit and which includes a second end region, having a first valve unit and having a second valve unit, which are arranged spaced apart from one another along the fluid channel and are each designed for selectively blocking or releasing the fluid channel in order to form in the fluid channel a fluid reservoir which is delimited by the two valve units and is provided for storing working gas, having a control unit for controlling the valve units, the fluid reservoir being assigned a pressure sensor which is designed to provide a pressure signal as a function of a working gas pressure and is electrically connected to the control unit.

A dosing system for cleaning liquids in the field of commercial cleaning having a storage volume and a dosing device arranged on the storage volume as well as a corresponding dosing method.

A dosing system for cleaning liquids in the field of commercial cleaning having a storage volume and a dosing device arranged on the storage volume as well as a corresponding dosing method.

The present invention relates to a dosing system (1) for cleaning liquids in the field of commercial cleaning having a storage volume (2) and a dosing device (3) arranged on the storage volume (2) as well as a corresponding dosing method.