An electro-hydraulic actuation system for a sprayer comprises a hydraulic system, a hydraulic actuator, an electric actuator and a sprayer. The hydraulic system is for pressurizing a hydraulic fluid. The hydraulic actuator is powered by the hydraulic system. The electric actuator controls actuation of the hydraulic actuator by the hydraulic system. The sprayer is actuated by the hydraulic actuator.

A pump arrangement, in particular in a coating installation for the coating of components, such as a painting installation for the painting of motor vehicle body components, is provided. The pump arrangement includes a plurality of adjustable pumps for delivering a coating agent, e.g. for delivering a sealing agent for the sealing of weld seams on a motor vehicle body component. The pumps are connected in parallel such that the pumps extract the coating agent for delivery from a common inlet line and deliver said coating agent into a common outlet line. The arrangement further includes a control device for the open-loop or closed-loop control of one fluid variable at the outlet of the individual pumps, respectively, wherein the control device actuates the individual pumps individually, and/or a monitoring unit, which switches the pumps on and off non-simultaneously.

Method for applying glue on tubular cores for the production of logs of paper material comprising the step of supplying in sequence more tubular cores (1) along a predetermined advancing direction (A) and the step of applying on each of said cores (1) a predetermined amount of glue, and the glue is applied on the tubular cores (1) from the above. While advancing along said direction (A) and without interrupting their run, the tubular cores (1) intercept for a predetermined time the glue (EG) released by a predetermined number of nozzles (114); and during said time interval the glue (EG) is both on the nozzles (114) and the tubular cores (1) given the absence of any element interposed between the nozzles and the tubular cores.

Method for applying glue on tubular cores for the production of logs of paper material comprising the step of supplying in sequence more tubular cores (1) along a predetermined advancing direction (A) and the step of applying on each of said cores (1) a predetermined amount of glue, and the glue is applied on the tubular cores (1) from the above. While advancing along said direction (A) and without interrupting their run, the tubular cores (1) intercept for a predetermined time the glue (EG) released by a predetermined number of nozzles (114); and during said time interval the glue (EG) is both on the nozzles (114) and the tubular cores (1) given the absence of any element interposed between the nozzles and the tubular cores.

A high-pressure cleaning appliance includes a connection for a liquid source, a delivery pump, a motor for driving the delivery pump, a delivery line through which liquid can be delivered from the connection to a spraying-out opening of the delivery line via the delivery pump, and a valve which is arranged in the delivery line. The motor has two operating states. The two operating states include an off state and an on state. The valve has two valve states, wherein the two valve states include a closed state and an open state. In the closed state, the valve prevents a flow of liquid through the delivery line. In the open state, the valve allows a flow of liquid through the delivery line. The high-pressure cleaning appliance is structurally configured in such a way that the adjustment of the operating state of the motor is possible only if the valve is in the open state.

Provided is a discharge apparatus to which an aerosol container can be detachably mounted, the discharge apparatus including: a pressing unit configured to press a stem for opening and closing a valve of the aerosol container; and a buffer unit configured to buffer excess force, which is an amount of force by which force with which the pressing unit presses the stem has exceeded force to open the valve. The buffer unit may be configured to buffer the excess force exerted on the pressing unit by moving the pressing unit according to the excess force. The buffer unit may be configured to buffer the excess force exerted on the aerosol container by moving the aerosol container according to the excess force.

A liquid ejecting head includes a nozzle. A sectional shape at a first-position in the nozzle in an ejection-direction is a first-external-shape, and a straight line extending in a second-direction orthogonal to both the ejection-direction and a first-direction being a longitudinal-direction of the first-external-shape and passing through a center of the first-external-shape in the first-direction is a first-center-line. A first-width corresponding to a maximum width in the second-direction in a portion of the first-external-shape on one side in the first-direction with respect to the first-center-line is at a third-position in the first-direction. A second-width corresponding to a maximum width in the second-direction in a portion of the first-external-shape on the other side in the first-direction with respect to the first-center-line is at a fourth-position in the first-direction. A distance between the third-position and the fourth-position is greater than the first-width and the second-width.

An underwater remote cleaning device includes a submersible assembly, a cleaning conduit, and a thruster conduit. The submersible assembly has an upper frame and a lower frame spaced-apart from each other and at least one vertically extending element having a first end and a second end. The first end of the vertically extending element is engaged to the upper frame and the second end of the vertically extending element is engaged to the lower frame. The cleaning conduit is disposed within the submersible assembly with an inlet for receiving a liquid and at least one nozzle disposed on the cleaning conduit for spraying the liquid. The thruster conduit is disposed within the submersible assembly with an inlet for receiving a liquid and at least one nozzle disposed on the cleaning conduit for spraying the liquid.

An application device for coating components with a coating agent includes: a print head having several individual nozzles for discharging the coating agent; and a nozzle valve attached to each individual nozzle, each nozzle valve being openable for a valve opening time to discharge the coating agent from the respective nozzle. Each nozzle valve is assigned in each case a nozzle valve supply line, which nozzle valve supply line, at an outlet opening thereof, supplies the coating agent to the respective nozzle valve. Each nozzle valve supply line has an inlet opening to be closed or shut off such that a quantity of the coating agent that is metered in a defined manner or a volume of the coating agent that is metered in a defined manner is receivable in a closed off manner within the nozzle valve supply line.

An application device for coating components with a coating agent includes: a print head having several individual nozzles for discharging the coating agent; and a nozzle valve attached to each individual nozzle, each nozzle valve being openable for a valve opening time to discharge the coating agent from the respective nozzle. Each nozzle valve is assigned in each case a nozzle valve supply line, which nozzle valve supply line, at an outlet opening thereof, supplies the coating agent to the respective nozzle valve. Each nozzle valve supply line has an inlet opening to be closed or shut off such that a quantity of the coating agent that is metered in a defined manner or a volume of the coating agent that is metered in a defined manner is receivable in a closed off manner within the nozzle valve supply line.