Extruded plastics window sill profile cuts hollow shape-bent spring from core profile to give millimeter yield so spring bends lie spaced and near to core.

摘要

The spring (20) has a vertical yield of 3 or more mm with the spring base bearing below on the core (5) of the sill and the vertical top and bottom edges of the core profile (5) project outwards so completing a U configuration together with the vertical flank (9) of the sill adapter profile (1). The top and bottom edges specified form an angle of less than 90[deg] with the vertical flank (9). The spring is bow shaped (20) with the spring bends (14,16) respectively spaced from and approaching (15) the profile core (5). The free end (21) of the spring lies closer to the core profile (5) so the spring as such is simply cut from an extruded hollow profile and can be cut straight from the core (5) sector (11).