Abstract:
The invention relates to a nozzle for paste-like masses with a housing which has an upper shell and a lower shell which delimit an inner space that broadens from an inlet opening in the direction of nozzle openings. To apply pasty-like material onto a surface reproducibly and in a desired pattern and quantity, the nozzle openings are delimited by a replaceable replacement insert arranged between the upper shell and the lower shell, and the nozzle openings are openable or closable by a closing element movable along the outer side of the upper or the lower shell.
Abstract:
A method for solderless electrical press-fit contacting of electrically conductive press-fit pins in circuit boards include: providing a circuit board having a thickness, at least one electrical conductor path, and a contacting opening guided perpendicularly through the circuit board and having a metallized inner wall; providing an electrically conductive press-fit pin having a longitudinal axis and having a press-fit region suitable for press-fitting into the contacting opening and having a substantially round cross section; and press-fitting the press-fit pin into the contacting opening by applying onto the press-fit pin a force acting along the longitudinal axis of the press-fit pin, press-fitting being assisted by the application of ultrasound acting on the press-fit pin.
Abstract:
A slot valve (20) for use in the pneumatic switching circuit of a respirator, wherein said slot valve is designed to act bidirectionally and to pass over into the opened state to make possible the flow of a fluid at different pressure threshold values depending on the direction of flow of a fluid.