A joining arrangement for use in the construction of stud frames and for releasable attachment of a first member to a second structural member forming part of the frame. The first member includes in at least one side wall a female recess which, when the members are joined, engages a corresponding male...http://www.google.sh/patents/US7223043?utm_source=gb-gplus-sharePatent US7223043 - Structural members and joining arrangements therefor
