PROFILE JOINING LOCK Russian patent published in 1994 - IPC

FIELD: mechanical engineering. SUBSTANCE: lock has channel-shaped inner and outer clamping members with hooks, the members are mounted one inside the other and connected by an axle. Longitudinal ends of side walls of the members face one side. A flat spring with a bent section is mounted between the clamping members. When vertical and horizontal profiles are joined the lock is inserted into the cavity of the horizontal profile. A fastening screw is inserted into a threaded lock hole of the inner clamping member and when it is screwed in the clamping members are pressed to each other and their hooks are engaged with tongues of the vertical profile. EFFECT: improved strength and reliability. 2 cl, 10 dwg