Doorplate for doorknob and door lock; has recess for cylinder lock and additional recess to act as engagement opening for two-way key

摘要

The doorplate (1) has a recess (05) for a cylinder lock and an additional recess (04), which acts an engagement opening for a two-way key. The recess may be round or polygonal. A device to prevent opening may be formed instead of the recess for the keyhole.