High-security terminal for pneumatic-tube conveyor

A terminal for connection between sections of a pneumatic tube for passing and intercepting carriers passing along the tube, the terminal comprising:

• upper and lower end walls spaced apart along an axis and having respective upper and lower ports respectively connected to the tube sections, the lower end wall also having angularly offset from the respective tube section an outlet port;
• a rotor rotatable about the axis between the end walls between a pass-through position and an intercept position, the rotor having
• a pass-through tube aligned between the tube sections only in the pass-through position, and
• an intercept tube aligned between the tube sections only in the intercept position and aligned with the outlet port in the pass-through position, the intercept tube being adapted to brake and stop a carrier;
• a closing plate under the rotor, having an axially throughgoing aperture, and displaceable between a closed position blocking the outlet port and with the aperture aligned with and permitting movement through the lower port and an open position with the aperture aligned with and permitting passage through both the lower and outlet ports;
• and
• user-specific locking means for displacing the closing plate into the open position.