System for connecting profiles to form frame comprises tenons with cooperating sloping surfaces, each of which fits into other profile so that they fit against each other when edges of profiles fit against each other

摘要

The system for connecting profiles (54, 55) to form a frame comprises tenons (64, 65) with cooperating sloping surfaces (58, 59). Each of these fits into the other profile so that the sloping surfaces fit against each other when the edges of the profiles fit against each other. An Independent claim is included for a modular building system using the profiles.