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Onion has since moved on to design knives for Columbia River Knife and Tool, and most recently a knife sharpener with Work Sharp. Onion holds 36 design patents on different items including locks, mechanisms, and knife designs. [6] [7] Most notable of these is the Speed-safe mechanism used by Kershaw Knives.
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 ...
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.
Photo of Walker Linerlock knives with closeup of locking mechanism. Linerlock mechanisms are most commonly composed of titanium alloy or steel. [8] The linerlock's locking side liner is split from the top toward the bottom, similar to an automotive leaf spring (also called a lock bar) that butts up against the tang of the blade to prevent the blade from closing. [9]
This lock must be released in a distinct action before the knife can be folded. The lock-blade knife improves safety by preventing accidental blade closure while cutting. It is this locking blade feature that differentiates the lock-blade knife from either the peasant knife or the slipjoint spring-back knife. Locking knives also tend to be ...
A folding switchblade. A switchblade (also known as switch knife, automatic knife, pushbutton knife, ejector knife, flick knife, gravity knife, flick blade, or spring knife) is a pocketknife with a sliding or pivoting blade contained in the handle which is extended automatically by a spring when a button, lever, or switch on the handle or bolster is activated.
The handle splits apart revealing a separate knife, fork, spoon and bottle opener. Case produced two variations of the Hobo ('51 and '52) from the early 1900s-1940. These were made with two to four utensil implements using a can opener, soup spoon, three-pronged fork, and knife blade. Case re-introduced the Hobo (54) in 1983. The CopperLock
Case knife can refer to: A large type of table knife, typically stored in a case; Sheath knife; The Dutch case-knife, a variety of runner bean;
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