Patent ID: 9056398
Filing Date: 2015-06-16
Classification: B26B

Abstract:
1. A knife having resilient elements for blade positioning, comprising: a blade having an end provided with two said resilient elements and a projection, each said resilient element having an end protrudingly provided with an engaging portion; a handle corresponding in configuration to the blade so as for the blade to be positioned in a receiving space in the handle, the handle being provided longitudinally therein with a first track and two second tracks, all said tracks corresponding in position to the receiving space, wherein the first track further corresponds in position to the projection, and the second tracks further correspond in position to the resilient elements respectively, the projection being movably inserted in the first track, each pair of corresponding ends of the second tracks being spaced by a distance corresponding to a distance between the engaging portions, wherein end sections of the second tracks adjacent to the ends of the second tracks are perpendicular to middle sections of the second tracks respectively, the middle sections of the second tracks are parallel with each other and, when the engaging portions are respectively engaged in said end sections of said second tracks, the engaging portions are hindered from moving along the middle sections of the second tracks, such that the blade is either completely received and positioned in the handle or extended out of and positioned outside the handle; and a pushing element having a first end exposed from the handle and a second end extending into the handle and movably inserted in the first track, the pushing element being provided with two recesses corresponding in position respectively to the engaging portions so as for the engaging portions to be positioned in the recesses respectively, each said recess having two sides each provided with an obliquely extending wall, wherein when the engaging portions are respectively engaged in said pair of corresponding ends of the second tracks and the pushing element is moved along the first track, the engaging portions are respectively pushed by corresponding said obliquely extending walls such that not only are the resilient elements deformed, but also the distance between the engaging portions is adjusted to correspond to a distance between middle sections of the second tracks, thus allowing the engaging portions to move along the second tracks and engaged in said end sections of said second tracks.