Patent ID: 9017133
Filing Date: 2015-04-28
Classification: A63H

Abstract:
1. A toy building block capable of being stacked, comprising: a top surface of the block having thereon at least one stud with a plurality of circumferentially arranged, substantially equally spaced teeth with rounded crests and interspersed rounded grooves, the stud having a height extending above the top surface of the block by at least about 30% of the height of the block; and a bottom surface of the block having at least one recess with sidewalls, at least one sidewall of the recess having a substantially vertically extending land shaped complementary to and extending into a respective one of the rounded grooves of the stud, wherein the stud is configured and operable to be insertable in the recesses of other like toy building blocks, and the stud on one block is guided into a recess of another of the blocks by the lands in the recess of the other block wherein the recesses are shaped such that one of the studs inserted in one of the recesses is guided by at least three zones of contact, and at least one of the zones is a land in the recess of another of the blocks engageable in one of the rounded grooves in the stud.