Back to results
US 4,719,700 AGranted
Knife opening mechanism
OwnerWilliam J. Taylor, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A knife of the type having a casing and a blade pivotably mounted thereto has an actuator button slidably mounted to the casing. The blade has a concentric wheel associated therewith. One end of a non-extensible linkage is connected to the actuator, and the opposite end of the non-extensible linkage is wrapped around a portion of the wheel. When the user exerts a force to slide the actuator, the user-exerted force is transmitted by the non-extensible linkage to rotate the wheel, thereby pivoting the blade from its closed position to its open position.
Claims7
A folding knife comprising:
- a casing;
- a blade pivotably mounted to said casing and having a closed position and an open position with respect thereto;
- a wheel operatively associated with said blade such that rotating said wheel pivots said blade with respect to said casing;
- an actuator slidably mounted to said casing for actuation by a user;
- and
- a non-extensible linkage attached to said actuator and wrapped around a portion of the circumference of said wheel such that when a user exerts a force against said actuator to slide said actuator with respect to said casing, said user-exerted force is transmitted to said non-extensible linkage wrapped around a portion of said wheel, whereby said user-exerted force is converted into a rotational force by said wheel to rotate said blade from said closed position to said open position.
3 more elements
Dependencies are inferred from the claim text.