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Five years later, in 1996, Doug Flagg, then with Kershaw Knives met Onion while calling on an account for Kershaw and the two discussed an arrangement for the assisted-opening mechanism, which led to a contract. [5] [6] This contract led to Kershaw expanding its factory and number of employees to accommodate the demand for these knives. [6]
A Kershaw Leek Assisted-opening knife in action. On 28 December 1998, the USPTO granted and published U.S. patent 6,006,385 for inventors Peter G. Kershaw, Douglas B. Flagg, Craig Green and Katsumi Hasegawa. The patent was filed on 24 January 1997 by Kai USA Ltd, who was also the assignee for the duration of its 20-year life span.
An assisted-opening knife being opened. An assisted-opening knife is a type of folding knife which uses an internal mechanism to finish the opening of the blade once the user has partially opened it using a flipper or thumbstud attached to the blade. [1] When the knife is in the closed position, the blade is held in place by means of torsion ...
CRKT owns fifteen patents and patents pending. These include the Outburst assist opening mechanism, Lock Back Safety (L.B.S.) mechanism, Veff-Serrated edges, and the Deadbolt Lock. The Outburst is the company's proprietary mechanism for their assisted-opening knives. These knives are standard pivot joint liner lock or frame lock folding knife.
The case drew national attention, with some comparing Ashley Benefield to the protagonist of the 2010 film "Black Swan." Ex-ballerina convicted of killing husband gets 20 years in "Black Swan ...
Case, Cattaraugus, and other cutlery manufacturers soon introduced similar knives of their own and it is from these that the modern concept of the survival knife is descended. These knives, along with machetes and bolos constituted survival knives as used by military, explorers, and outdoorsmen up through at least the 1930s.
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