Explore the LEGO history

Working towards a patent

1958

Patent options, 1958

Patent options, 1958

A technical solution - working towards a patent

The LEGO® System’s basic element – the LEGO® brick – needs improving in order to live up to the product idea and the company’s quality standard. But how? The problem with the Brick is its clutch power – or lack of. There are many complaints from the German market, and competitors are moving in. Mould Production experiments with ribs and grooves. It improves the clutch power but not nearly enough. One series of tests has a tube at each end of an 8 stud brick. But that too is insufficient. But the three tube arrangement we know today proves to be the perfect solution.

A technical solution - working towards a patent

The LEGO® System’s basic element – the LEGO® brick – needs improving in order to live up to the product idea and the company’s quality standard. But how? The problem with the Brick is its clutch power – or lack of. There are many complaints from the German market, and competitors are moving in. Mould Production experiments with ribs and grooves. It improves the clutch power but not nearly enough. One series of tests has a tube at each end of an 8 stud brick. But that too is insufficient. But the three tube arrangement we know today proves to be the perfect solution.

The patent, 1958

The patent, 1958

January 28, 1958, at 13.58

After inventing the tube solution, Godtfred Kirk Christiansen is anxious in case competitors come up with similar answers. The ingenious interlocking principle has to be properly protected. For this purpose an application is submitted for “a patent in Denmark for a toy building element”, accompanied by manufactured elements and drawings showing every conceivable “internal” interlocking option.

January 28, 1958, at 13.58

After inventing the tube solution, Godtfred Kirk Christiansen is anxious in case competitors come up with similar answers. The ingenious interlocking principle has to be properly protected. For this purpose an application is submitted for “a patent in Denmark for a toy building element”, accompanied by manufactured elements and drawings showing every conceivable “internal” interlocking option.

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