Knives having removable blades are described. Such a knife includes a handle; and a blade removably connected to the handle. The blade includes a blade portion and a carrier portion. The carrier portion of the blade includes a cam slot and the handle includes a cam pin which enable the blade to be removably connected to the handle.

Knives having removable blades are described. Such a knife includes a handle; and a blade removably connected to the handle. The blade includes a blade portion and a carrier portion. The carrier portion of the blade includes a cam slot and the handle includes a cam pin which enable the blade to be removably connected to the handle.

The present invention discloses a trigger knife with a fixable blade position, including a knife shell, a blade holder, a blade, a first elastic member, a trigger, and a limiting mechanism. The blade holder is capable of moving close to or away from the blade outlet in the inner cavity together with the blade. The trigger is rotatably mounted on the knife shell and configured to drive the blade to extend out of the inner cavity. The first elastic member is configured to drive the blade to be retracted into the inner cavity. The limiting mechanism is configured to limit a rotation angle of the trigger, so that the blade can be fixed to at least one preset position in the inner cavity. In the present invention, the blade can be effectively fixed to the at least one preset position in the inner cavity, which can meet usage requirements.

Provided is a knife facilitating haft replacement to suit a person's preference and purpose of use. On the front side of a tang 3 extending in the front-rear direction, a protrusion portion 7 capable of biting into a haft 50 made of, for example, a wooden rod such as a tree branch is provided so as to be separated from the tang 3 and protrude to the rear side of the tang 3. A first receiving portion 8 receiving the haft 50 with the protrusion portion 7 biting into the haft 50 is provided on the rear side of the tang 3. The end surface of one end portion of the haft 50 is bitten by being pushed in from the protruding end side of the protrusion portion 7 toward the front side of the tang 3. With the protrusion portion 7 biting into the haft 50, the other end portion side of the haft 50 extending to the rear side of the tang 3 is received by the first receiving portion 8. As a result, the haft 50 is attached to a knife 1. As a result, a structure for connecting the tang to the haft 50 is unnecessary and a person can easily replace the haft 50 to suit his or her preference and purpose of use.

Provided is a knife facilitating haft replacement to suit a person's preference and purpose of use. On the front side of a tang 3 extending in the front-rear direction, a protrusion portion 7 capable of biting into a haft 50 made of, for example, a wooden rod such as a tree branch is provided so as to be separated from the tang 3 and protrude to the rear side of the tang 3. A first receiving portion 8 receiving the haft 50 with the protrusion portion 7 biting into the haft 50 is provided on the rear side of the tang 3. The end surface of one end portion of the haft 50 is bitten by being pushed in from the protruding end side of the protrusion portion 7 toward the front side of the tang 3. With the protrusion portion 7 biting into the haft 50, the other end portion side of the haft 50 extending to the rear side of the tang 3 is received by the first receiving portion 8. As a result, the haft 50 is attached to a knife 1. As a result, a structure for connecting the tang to the haft 50 is unnecessary and a person can easily replace the haft 50 to suit his or her preference and purpose of use.

An utility knife includes a housing, a blade seat, a blade, and a switching assembly. The housing has a chamber, an opening formed at an end of the chamber, and a switch slot communicating with the chamber. The blade seat is arranged in the chamber and has a blade holding slot and a guiding slot communicating with the blade holding slot. The blade is detachably mounted to the blade holding slot and has at least one engaging slot. The switching assembly includes a toggle switch movably arranged to the switch slot and exposed to the housing, an engaging block disposed at an end of the toggle switch and movably arranged to the guiding slot, and a biasing member elastically biasing the engaging block relative to the guiding slot.

A device is disclosed including a reloadable utility knife having a blade magazine with one or more compartments for storing multiple cutting blades. The blade magazine has a reloading compartment for new blades, and a storage compartment to keep additional blades. The blade magazine is loaded from the rear of the knife body and is locked inside. A working blade may be released before reloaded a fresh blade. The working blade can be extended or retracted multiple times via a blade transport mechanism. The blade magazine may be extracted via the lock mechanism and pushed out by a spring designed for this purpose. The blade transport mechanism, the blade release mechanism, and a blade lock mechanism work in cooperation to allow extension and retraction of a blade, disposing of a blade, and reloading of a blade.

A blade enclosure for selectively releasing and securing a first shell portion and a second shell portion of a shell together with a fastener. The blade enclosure comprises the shell, the fastener and a blade cavity. The shell comprises the first shell portion and the second shell portion. The blade cavity comprises a space between the first shell portion and the second shell portion. The blade enclosure comprises a centerline, a first end and a second end. The fastener is configured to selectively attach to the shell along the centerline. The fastener is configured to further comprise a threaded shaft, and the shell comprises a fastener socket. The fastener socket is partially in the second shell portion and partially in the first shell portion, such that when the shell is in an assembled configuration, the fastener socket is configured hold the first shell portion and the second shell portion together.

Embodiments are described for a simple convertible utility knife and scraper includes a handle, slide mechanism, and flat spring with a centrally mounted utility blade. The flat spring locks into precut positions in the handle to secure the blade in the desired position, whether in a cutting position or a scraping position. The blade can be partially extended to expose the front of the blade in the cutting position. When the slide is fully extended, the blade can rotate about a central axis to a position perpendicular to the handle and then be retracted into slots at the end of the handle to secure and support the blade in the scraper position.

A knife is provided that includes a replaceable blade element. The knife employs a blade carrier that is fixedly interconnected to or foldable with respect to a handle. The blade carrier selectively receives the replaceable blade element that is locked into the blade carrier by way of a blade release mechanism by biasing an associated spring that is further associated with a blade release button. The replaceable blade element is designed to be inserted within the blade carrier quickly, easily, and safely. The replaceable blade element may abut an internal guide surface during insertion.