Abstract: Switching systems are provided for fail-secure and fail-safe solenoid operated locks, and are designed to maintain the solenoid cool during activation during normal operation when the solenoid is continuously supplied with current. The switching system comprises a dual action switch with electrical contacts providing for momentary high electric power during initial activation of the solenoid operated lock, and also providing a low power continuous current to maintain the solenoid cool during continuous activation. The switching system comprises a push-on, push-off switch, and a normally-open switch connected in series with a transformer and the solenoid operated lock, to provide a high electrical power to the solenoid when both switches are closed.

Abstract: A rim lock having a housing within which is disposed a solenoid with anvil and a plunger movable within the solenoid being reversible and interchangeable within the housing and using interchangeable bolt assemblies to provide for Fail Safe or Fail Secure or Mechanical applications. This invention also accommodates in a compact manner the use of the rim lock for both inswing and outswing door applications and from narrow to large stile door configurations.

Abstract: A rim lock which includes a housing, a bolt displaceable in the housing, a strike which receives the bolt, a solenoid which is mounted on the housing and has a coil, a plunger which is axially reciprocal in the coil, a crosspiece fin which is disposed between and which is rigidly affixed to the plunger and the bolt, a front inner lever which has at least one pin and is rotationally mounted in the housing and is in mechanical communication with the crosspiece fin, a spring which is operatively braced between the crosspiece fin and the housing, apparatus which electrically energizes the coil, holding appartus which are operatively engageable between the bolt and the housing and mechanically retains the bolt, a key operated lock cylinder, a rear inner lever which has at least one pin and is rotationally mounted in the housing and is in mechanical communication with the crosspiece fin, and coupling apparatus which includes an interchangeable backset plate which is engaged between the key-operated lock cylinder an