![]() ![]() In 2013 Ingersoll Rand's security products were placed in a spin-off company called Allegion. Ingersoll Rand acquired Kryptonite in 2001. ![]() Thieves stripped the bicycle of every part that could be removed, but the lock resisted all attempts to break it. In an early test of the Kryptonite lock, a bicycle was locked to a signpost in Greenwich Village in New York City for thirty days. The first Kryptonite lock model was made of sheet metal cut and bent to shape, but the company soon went to the now universal circular cross section. Indeed, local hardware stores would often sell inexpensive chain cut to length using simple bolt cutters. In the early 1970s, in the US, the only proven method to secure one's bicycle was by the use of case hardened security chains with hexagonal links, but some cyclists were making the mistake of using inexpensive chains or cables that could be breached by thieves using commonly available tools. In 1972 Michael Zane bought the lock and company from Kaplan. Kaplan partnered with Michael Zane, whose father had a metal manufacturing company, to produce and market the locks. The Kryptonite u-lock was developed by Stanley Kaplan. The name is used under a limited trademark agreement with DC Comics dating back to 1983. The product was named after kryptonite, the fictitious substance that can thwart the powerful comic-book hero Superman. The basic design, made of hardened steel of circular cross section bent into a U-shape with a removable crossbar, has been emulated by numerous other manufacturers, and adapted with variations in size and shape for other applications, such as locking motorcycles. ![]() Kryptonite is an Allegion-owned brand of bicycle lock for securing a bicycle to a pole or other fixture, when the owner wants to leave the bicycle in a public place. A "New York 3000" Kryptonite lock "New York standard" Kryptonite lock ![]()
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