Abstract: A switch assembly comprising a housing including a baseplate on which are mounted a magnetic core having a pair of flanges and a winding wound around it, and two switch capsules positioned on either sides of the magnetic core with each capsule being insulated from each flange of the magnetic core by insulating means. Magnets are also positioned to provide either a monostable or a bistable mode of operation as desired. With this constructions, the magnetic and electric paths in the assembly are physically separate from one another, thereby allowing the magnetic and electric materials to be chosen independently from each other.

Abstract: A reed switch comprising a sealed capsule which includes a movable armature consisting in a beam of magnetic material having two pole ends capable of alternate contacting engagement with a respective of two distinct stationary contacts when the armature is pivoting in a longitudinal axial plane. The armature is suspended symmetrically to the ends of a helicoidal spring which extends axially around the armature beam and which is fixedly positioned inside the capsule by means of a cylindrical annular electrode. The coacting surfaces of the pole ends and the stationary contacts are provided with spots made of a material which cannot be wetted by the mercury also included in the capsule. Magnetic means in various embodiments are also provided to create the initial magnetic condition according to the mode of switching operation desired.

Abstract: A magnetic relay having an electromagnetic coil with an open center extending lengthwise therethrough and an outer tube of magnetic material enclosing it lengthwise. A pair of radially expandable disks of magnetic material are positioned in the outer tube across the ends of the coil and a pair of inner tubes of magnetic material are positioned axially aligned with each other through the central openings in the disks and in the open center of the coil about a switch contact, e.g. a reed switch capsule. The adjacent ends of the inner tubes are spaced apart to form a gap adjacent the coacting ends of the switch contact. These inner tubes are of a size in the open center of the coil to pass freely through the central openings in the disks and of a larger size at the location of the disks such that these inner tubes urge the disks to expand radially into tight contact with the inside of the outer tube.

Abstract: A reed contact relay comprising within a capsule, reeds the coacting tips of which are provided with spots made of a material which can not be wetted with mercury. Two tubes in magnetic material are aligned in spaced apart relation around the reeds such that an axial gap is formed therebetween at the lenghtwise level of the coacting tips of the reeds. The inner wall of these tubes and the surface of the reeds, except the surface of the spots, are wetted with mercury.