Electrical door opener for cooperative housing having many apartments, has stoppers movable between locking position in which stoppers lock pins at interior of openings, and retracted position in which stoppers free displacement of pins

摘要

The opener has a label holder (24) equipped of a front surface i.e. memory, and a replaceable label (40) fixed on the surface. The label has pins (78, 80) with recesses (82-84) on its periphery. The pins are screwed in traversing openings (72, 74) to fix the label on the surface. Movable stoppers (100, 102) are movable between a locking position in which the stoppers lock the pins at the interior of the openings by cooperation of the form with the recesses, and a retracted position in which the stoppers free the displacement of the pins to allow the withdrawal of the pins from the openings. An independent claim is also included for a method for replacing a label for an electrical door opener.