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(11) | EP 1 264 955 A3 |
(12) | EUROPEAN PATENT APPLICATION |
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(54) | Chain-drive actuator |
(57) A chain-drive actuator (10) that is useful particularly but not exclusively for closing
and opening horizontally-hinged doors and windows, and comprises, within a box-like
containment body (11), motor means (13) connected to a reduction unit (14) that is
in turn coupled in output to an actuation unit (15) that comprises a chain (16) with
an outer end preset to pass through a corresponding opening formed in the box-like
body. The actuator comprises guiding means (19) for the chain (16) that comprise at
least one guiding slot (21), which is formed at the bottom of the box-like body and
in which an inner end (23) of the at least one chain is slidingly guided so as to
form a movable stroke limiter during traction and retraction. |