A tubular pin tumbler lock, also known as Ace lock; axial pin tumbler lock; or radial lock, is a variety of pin tumbler lock in which 6-8 pins are arranged in a circular pattern, and the corresponding key is tubular or cylindrical in shape.
Joseph Bramah is credited with the invention of the forefather of the tubular pin tumbler lock except his used iron wafers not cylinders (red and blue in diagrams). He received a patent for his new lock in 1784. J.A. Blake is credited with patenting the first tubular lock in 1833. Walter R. Schlage continued the development of the tubular lock. He was awarded 11 patents.
Tubular locks are commonly seen on bicycle locks, computer locks, elevators, and a variety of coin-operated devices such as vending machines, coin-operated washing machines, and slot machines.
Read more about Tubular Pin Tumbler Lock: Security
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