Patent ID: 9151060
Filing Date: 2015-10-06
Classification: E04F,F16B

Abstract:
1. A construction block, comprising: a front face; a back face; edges, each edge having a recess and a projection, the projection having two sides and a claw on both said sides of the projection, the recess having two sides and a notch on both said sides of the recess, the projection matching with the recess in order to connect the construction block to a similar construction block such that the claws of the construction block mate with notches of the similar construction block; and a wheel that is turnable from the back face, the wheel having wedges for each edge of the construction block on a circumferential edge of the wheel, the wedges being directed tangentially to the wheel along the circumferential edge, and each wedge being arranged to push the claws against the notches thereby to lock a connection between the construction block and the similar construction block when the wheel is turned.