Abstract: A method of assembling pushbuttons for a liquid dispensing system, in which each pushbutton comprises an actuation body and at least one other component assembled with said body in a given position, said method making provision for using bodies on which a positioning cavity is formed, and continuously supplying a station for assembling the bodies and the other components by means of a path for conveying said bodies, said path having a complementary profile intended to cooperate with the cavities in order to carry out the positioning of said bodies in said conveying path, so as to carry out the assembly of the other components on the bodies thus positioned during their conveying to the assembly station. The invention also concerns an installation for implementing this method, and a pushbutton assembled by implementing said method.

Abstract: A method of assembling pushbuttons for a liquid dispensing system, in which each pushbutton comprises an actuation body and at least one other component assembled with said body in a given position, said method making provision for using bodies on which a positioning cavity is formed, and continuously supplying a station for assembling the bodies and the other components by means of a path for conveying said bodies, said path having a complementary profile intended to cooperate with the cavities in order to carry out the positioning of said bodies in said conveying path, so as to carry out the assembly of the other components on the bodies thus positioned during their conveying to the assembly station. The invention also concerns an installation for implementing this method, and a pushbutton assembled by implementing said method.

Abstract: Gas-filter in the form of an axisymmetric one-part cartridge (1), characterised in that it is essentially constituted by:a) a rigid ring (2) comprising an axisymmetric lateral wall (21) bounded by a flat-forming extremity (23) and by another, fold-down extremity (24), openings (22) being disposed on the wall (21) between the extremities (23) and (24),b) a gas-impermeable backing piece (3) surrounding on the outside the lateral wall (21) of the ring (2) by bearing on the plane extremity (23) of the ring (2) and crimped into the fold-down extremity (24) of the ring (2),c) filter elements (4) disposed between the ring (2) and the backing piece (3).

Abstract: A draft protection device for a precision balance including an exposed weighing dish. The device includes at least two hollow bodies of similar shape which can be telescopically slid one into the other. The hollow bodies are maintained in the desired position by a self-locking intermediate ring placed on the inner second hollow body.