Sliding service window has moving frame that slide horizontally and mechanical assistance system with counterweight

摘要

The service window consists of a fixed frame set in an aperture in a partition, and a moving frame (10) that slides horizontally in front of the fixed frame, assisted by a mechanical system (100) with articulated levers (101, 102) and a counterweight (106). The first lever (101) is pivoted to the top of a horizontal member (22) of the fixed frame, and the second lever (102) is pivoted to the top of a sliding frame member (23) and to the underside of the first lever.