Patent ID: 8171683
Filing Date: 2012-05-08
Classification: E04B

Abstract:
1. A log having a pair of oppositely directed faces, one of said faces having a pair of tongues, each defined by a pair of oppositely directed flanks interconnected by an end face, said tongues being separated by a channel and the other of said faces having a pair of grooves, each defined by a pair of opposed side walls interconnected by an end wall, said grooves being separated by a ridge, said tongues, channel, grooves and ridge being dimensioned relative to one another so as to inter-digitate when said one face of one log is placed on top of said other face of another log, with the flanks of each of said tongues being located between said side walls of a respective one of said grooves, and said ridge being received within said channel, said channel having a base spaced from an end face of a respective one of said tongues by a distance greater than the spacing between an end face of said ridge and said end wall of said grooves whereby said base is spaced from said end face of said ridge when said faces are interdigitated to define a void and one of said base of said channel and said end face of said ridge has a barrier projecting therefrom into said void to subdivide said void, said barrier maintaining a pair of seals placed in said void in spaced relationship on one of said base of said channel and said end face of said ridge.