Vertically movable trap door weight compensating mechanism - has operative parts housed in profile tube or on plate for building in

摘要

The device provides weight compensation for trap doors moving vertically, which are folded upwards into the horizontal position at a front cupboard edge. The weight-compensating operative components are accommodated in a profile tube or an installation plate. Compensation may be provided by a spring, engaging a spindle (5) with tension strips (18), wound up at its ends and connected to the trap door (3). The gear is compact and can be easily and quickly installed, using only a single screwdriver.