CPC E05F 1/105 (2013.01) [E05F 5/02 (2013.01); E05Y 2201/224 (2013.01); E05Y 2201/47 (2013.01); E05Y 2900/20 (2013.01)] | 11 Claims |
1. A door opener for opening a door comprising:
a shell consisting of an upper cover plate and
a lower cover plate;
a driving device with a first end and a second end contained within the shell;
at least one spring associated with the first end of the driving device and movable between a compressed state and an unstressed state;
a rotating member associated with the second end of the driving device that is rotated by the driving device when the at least one spring is moved from the compressed state to the unstressed state;
a pushing device contained within the shell configured for pushing the door when the rotating member is rotated by the driving device; and
a locking/releasing device provided at the second end of the driving device that is movable between;
a lock position in which movement of the driving device is prevented; and
a release position in which movement of the driving device is enabled.
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