Electrically operated drop seal for pass doors in operable walls

A pass door drop seal assembly for use with a pass door in an operable partition including a doorjamb, wherein the pass door is suspended above a floor, and wherein the pass door moves relative to the operable partition between an opened position and a closed position, the pass door drop seal assembly comprising:

• a motor;
• actuator means operatively connected to said motor and selectively movable by said motor between a first position and a second position;
• a retractable drop seal for providing a seal between the pass door and the floor, said drop seal being movable between a retracted position above the floor and a sealed position in sealing engagement with the floor;
• linkage means between said actuator means and said retractable drop seal for converting movement of said actuator means from the first position to the second position into movement of said retractable drop seal from the retracted position to the sealed position;
• and
• means, cooperating with the operable partition doorjamb, for mechanically moving said actuator means from the second position toward the first position when the pass door is moved from the closed position to the opened position, whereby said retractable drop seal moves from the sealed position toward the retracted position.

A pass door drop seal assembly for use with a pass door in an operable partition including a doorjamb, wherein the pass door is suspended above a floor, and wherein the pass door moves relative to the operable partition between an opened position and a closed position, the pass door drop seal assembly comprising:

• a motor including a motor shaft;
• an actuator screw rod rotatably coupled to said motor shaft, said actuator screw rod including an axial length;
• at least one pivot block operatively connected to said actuator screw rod and movable along said axial length between a first position and a second position when said motor rotates said actuator screw rod;
• a drop seal for providing a seal between the pass door and the floor, the drop seal movable between a retracted position above the floor and a sealed position in sealing engagement with the floor;
• a coupling, interconnecting said at least one pivot block and said drop seal, structured to move said drop seal from said retracted position to said sealed position when said at least one pivot block moves from said first position to said second position;
• and
• a pass door opening activated retractor, cooperating with the operable partition doorjamb, for moving said drop seal from the sealed position toward the retracted position when the pass door is moved from the closed position to the opened position.