Abstract: The invention concerns an expanding device (1) comprising two parts (heating elements 3,4) which can be moved relative to one another against the action of a spring element (11), wherein the spring element (11) is disposed between the two parts (heating elements 3,4) and abuts both parts (heating elements 3,4) with one external leg (12,13) each, a tensioning element (21) which can be displaced at a right angle to the direction of movement (14,15) of the two parts (heating elements 3,4) and is surrounded by a central connecting leg (18) of the spring element (11), and a counter bearing (20) on which the connecting leg (18) is supported in a tensioning direction (21′) of the tensioning element (21), wherein at least in the tension-free state, a section (16,17) of the connecting leg (18) cooperating with the tensioning element (21) in the tensioning direction (21′) is oriented at an inclined angle to the tensioning direction (21′) thereby forcing the parts to an abutment or wall and holding the

Abstract: The invention concerns an expanding device (1) comprising two parts (heating elements 3,4) which can be moved relative to one another against the action of a spring element (11), wherein the spring element (11) is disposed between the two parts (heating elements 3,4) and abuts both parts (heating elements 3,4) with one external leg (12,13) each, a tensioning element (21) which can be displaced at a right angle to the direction of movement (14,15) of the two parts (heating elements 3,4) and is surrounded by a central connecting leg (18) of the spring element (11), and a counter bearing (20) on which the connecting leg (18) is supported in a tensioning direction (21′) of the tensioning element (21), wherein at least in the tension-free state, a section (16,17) of the connecting leg (18) cooperating with the tensioning element (21) in the tensioning direction (21′) is oriented at an inclined angle to the tensioning direction (21′) thereby forcing the parts to an abutment or wall and holding the

Abstract: A rotary potentiometer device (1) has a rotary potentiometer (4) disposed within a housing (2) and a handle (7) above the housing (2) for rotating a resistive disk (6) of the rotary potentiometer (4). A latching device latches the handle (7) with the upper side of the housing (2) in predetermined rotation positions. At least one spring-loaded latching nose (16) protrudes above the upper side of the housing (2) and cooperates with latching troughs (18) in the lower side of the handle (7). No additional individual components are necessary for making the latching device. The spring-loaded configuration urges the latching nose towards a latched position defined by the latching troughs when it is deflected out of its latched position.