Use of composite sheet metal blanks as a means for the suppression of disturbing impact noises during opening and closing of garage door leaves

摘要

verbundblechzuschnitte from a frontblech, a gegenblech equal thickness and compared with the gegenblech thinner viscoelastic plastic verbundschicht as the means to suppress parasitic anschlaggeru00e4uschen when opening and closing of garagentorblu00e4ttern from b lech shaped torrahmen and ausfachenden fu00fcllblechen, with torrahmenstu00e4ndern are usedand with the understanding that the verbundblechzuschnitte as fu00fcllbleche in the torrahmen are in use.