Abstract: This invention concerns a magnetic switch assembly used for switching input and output signals between coaxial transmission lines connected to a body having a closed cavity in which terminals of the lines are exposed. One or more conductive contact members, which are the only moving parts in the cavity, bridge one or more pairs of line terminals in closed circuit portion. The contact members are moved magnetically from open to closed position, and are latched or held failsafe by stationary permanent magnets or pulsed electromagnets. The contact members are moved to open position by pulsed electromagnets or rotatable permanent magnets. The contact members comprise magnetized strips, magnetic strips, or nonmagnetic strips carrying magnets or magnetic members. The assembly can be arranged for single or multiple pole, single or multiple throw switching.

Abstract: This microwave transfer device is a hollow body having an internal cavity and lateral input and output openings communicating with the cavity. A post in the cavity divides it into passages extending between input and output openings for passing microwave signals therebetween. Axially reciprocatable shorting pins are supported on the body and are selectively insertable in the passages to close off the passages, and retractable from the passages to open the same. By proper selective insertion and retraction of the pins, microwave signals applied at the input openings can be combined, divided, or switched, respectively, to the output openings.

Abstract: A rotary actuator provides rotation of its rotor over predetermined angles. The rotor is a cylindrical housing in which are cylindrically curved permanently magnetized poles spaced apart at their ends and surrounding a fixed armature. The armature has magnetic arms angularly disposed with respect to each other which define fixed poles. Coils wound on the fixed poles generate magnetic fields when energized to drive the rotor. A holding coil may be provided to hold the rotor stationary when the holding coil is energized. The armature may have two, three or more fixed poles. The actuator can be operated in rotor latching or fail-safe return modes. Fixed stop members may be used to limit angular rotation of the rotor.