Door opener for bus and the like

A door opener for a bus or the like having a pair of doors pivotally mounted on respective door shafts on each side of a door opening for being pivoted opened and closed as desired, comprising:

• a. respective door bell cranks connected with the respective door shafts so as to effect the desired rotation thereof so to open and close the doors, respectively;
• b. a central bell crank journalled for pivotal movement for respectively opening and closing the doors and having double throw arms, one for each door;
• c. a pair of respective linking arms connecting respectively said central bell crank with a respective door bell crank;
• at least one of said linking arms including a pair of telescopingly engaging members for effecting reciprocal movement of one with respect to the other and a biasing means for maintaining a noise-abating force on the doors;
• d. motor means and interconnection means for effecting controlled pivotal rotation of said central bell crank;
• and
• e. a safety override mounted adjacent said central bell crank and adapted to override and disengage said motor means and said interconnection means to allow manual opening of said doors in the event of an emergency.