Abstract: A foldable knife with multiple switching modes comprises a knife handle, a blade and a switch device. The knife handle has a resisting elastic plate, a positioning plate and a top cover. The resisting elastic plate has an elastic portion. The positioning plate is connected to the resisting elastic plate and has an elastic arm extended in the positioning plate. The top cover is mounted on the positioning plate and has a slide slot. The slide slot is formed on the top cover. The blade has a pressing rod and a manual pushing rod which are respectively formed on a surface of the blade towards the positioning plate. The switch device is mounted in the slide slot and has a pushing block mounted through the top cover, and the switch device is used to switch between an assisted opening mode and a manual opening mode.

Abstract: A foldable knife with multiple switching modes comprises a knife handle, a blade and a switch device. The knife handle has a resisting elastic plate, a positioning plate and a top cover. The resisting elastic plate has an elastic portion. The positioning plate is connected to the resisting elastic plate and has an elastic arm extended in the positioning plate. The top cover is mounted on the positioning plate and has a slide slot. The slide slot is formed on the top cover. The blade has a pressing rod and a manual pushing rod which are respectively formed on a surface of the blade towards the positioning plate. The switch device is mounted in the slide slot and has a pushing block mounted through the top cover, and the switch device is used to switch between an assisted opening mode and a manual opening mode.

Abstract: A pocketknife has a handle, a blade, an assistant assembly and a locking assembly. The handle has a cavity defined in the handle. The blade is mounted pivotally at one end of the handle. The assistant assembly is mounted on the handle, assists to extend the blade out or retract the blade in the cavity and has a dial, a biasing lever and a spring. The dial is mounted rotatably in the handle and is connected securely on a proximal end of the blade. The biasing lever is mounted in the handle and is mounted eccentrically and pivotally on the dial. The spring is mounted around the biasing lever and biases the biasing lever to rotate the dial in two rotational directions to retract or extend the blade. The assistant assembly assists the user to open or close the pocketknife.

Abstract: A pocketknife has a handle, a blade, an assistant assembly and a locking assembly. The handle has a cavity defined in the handle. The blade is mounted pivotally at one end of the handle. The assistant assembly is mounted on the handle, assists to extend the blade out or retract the blade in the cavity and has a dial, a biasing lever and a spring. The dial is mounted rotatably in the handle and is connected securely on a proximal end of the blade. The biasing lever is mounted in the handle and is mounted eccentrically and pivotally on the dial. The spring is mounted around the biasing lever and biases the biasing lever to rotate the dial in two rotational directions to retract or extend the blade. The assistant assembly assists the user to open or close the pocketknife.

Abstract: A lock mechanism for a folding knife has a first cover, a first casing, a block and a resilient sheet. The block is mounted pivotally on the first cover. The resilient sheet is mounted adjacent to the block. The tang of the blade of the folding knife abuts the block. When operating the knife in one hand, a thumb is used to press the block and disengage the blade. Then a forefinger can be safely used to press the back of the blade into the chamber of the hilt. Therefore, the folding knife is safely folded.

Abstract: A folding knife includes a handle having a first handle half and a second handle half coupled together to define a slot on a longitudinal edge of the handle. A blade is pivotally connected to the handle and rotatable relative to the handle between a folded position and an unfolded position. A slider is movable in an elongated groove of the second handle half. The slider is spring-loaded and tends to be moved towards a front end of the handle, and a slider control is provided for moving the slider away from the front end. Furthermore, the blade has a cutout and the elongated groove of the second handle half is arranged so that the slider may be moved into the cutout when the blade is in its unfolded position, thereby preventing the blade from rotation and hence retaining the blade in this unfolded position.