Bacon & Thomas
Construction toy set of planar blocks with apertures and hinged connectors
 A construction toy set of planar blocks with edge apertures and hinged connectors including a plurality of block elements respectively made of flat shape, and a plurality of swivel connectors, each block element having a top side, a bottom side, a plurality of peripheral sides, a plurality of pins at the top side, a plurality of pin holes at the bottom side, a plurality of first retaining grooves equiangularly spaced from one another and respectively disposed in parallel with the peripheral sides, and a plurality of second retaining slots respectively and perpendicularly extended from the first retaining slots to the border, each swivel connector having two reversed base elements turned about an axle, each base element having an axle housing at one end mounted around the axle, a retainer plate at an opposite end for fitting into one first retaining slot, a pin at one side for fitting into one pin hole, and a pin hole at an opposite side for receiving one pin. 
A A
A63H A63H
inventional inventional
Jin-Su
Liu