The invention relates to a knife including a housing (11) inside which a blade holder (15) is movably mounted. The blade holder (15) comprises a main part (17) and least one holding part (18) which is movable between a holding position and a in replacement position. In the holding position, a blade (16) can be tightly retained in a replaceable manner in a blade seat between a first holding surface (46) of the main part (17) and a second holding surface (45) of the holding part (18), while in the replacement position, the blade (16) can be removed from the blade seat or a new blade can be mounted in the blade seat. The invention is characterized in that in at least one relative position of the blade holder (15) to the housing (11), the blade holder (15) is biased against a stop (21) by a restoring force, and in that the holding part (18) can be moved into the blade replacement position by having an abutment surface (24) on the stop (21) cooperate with a mating surface (25) on the blade holder (15).

The invention relates to a knife including a housing (11) inside which a blade holder (15) is movably mounted. The blade holder (15) comprises a main part (17) and least one holding part (18) which is movable between a holding position and a in replacement position. In the holding position, a blade (16) can be tightly retained in a replaceable manner in a blade seat between a first holding surface (46) of the main part (17) and a second holding surface (45) of the holding part (18), while in the replacement position, the blade (16) can be removed from the blade seat or a new blade can be mounted in the blade seat. The invention is characterized in that in at least one relative position of the blade holder (15) to the housing (11), the blade holder (15) is biased against a stop (21) by a restoring force, and in that the holding part (18) can be moved into the blade replacement position by having an abutment surface (24) on the stop (21) cooperate with a mating surface (25) on the blade holder (15).

The present invention discloses a plate-type utility knife comprising a blade carrier, a blade structure and a cover plate, wherein, the blade structure is mounted on the front part of the blade carrier, between the blade carrier and the cover plate, the cover plate makes the blade structure fixed on the blade carrier. The blade carrier includes a main blade carrier plate and a front blade carrier plate, the front blade carrier plate is located in front of the main blade carrier plate, a vacancy that contains the blade structure is arranged on the front side of the main blade carrier plate, the blade structure is arranged in the vacancy, a space for containing the cover plate is arranged on the front side of the front blade carrier plate, the cover plate is mounted in the space. The blade carrier includes a back blade carrier plate, the main blade carrier plate is located between the front blade carrier plate and the back blade carrier plate.

The present invention discloses a plate-type utility knife comprising a blade carrier, a blade structure and a cover plate, wherein, the blade structure is mounted on the front part of the blade carrier, between the blade carrier and the cover plate, the cover plate makes the blade structure fixed on the blade carrier. The blade carrier includes a main blade carrier plate and a front blade carrier plate, the front blade carrier plate is located in front of the main blade carrier plate, a vacancy that contains the blade structure is arranged on the front side of the main blade carrier plate, the blade structure is arranged in the vacancy, a space for containing the cover plate is arranged on the front side of the front blade carrier plate, the cover plate is mounted in the space. The blade carrier includes a back blade carrier plate, the main blade carrier plate is located between the front blade carrier plate and the back blade carrier plate.

A knife include a handle, button, blade with an integral tang, locking mechanism within the tang, and thrust mechanism. The blade moves between closed and open positions. The button may axially slide along the handle. When the blade is in the closed position and locked, movement of the button towards the first handle end releases the locking mechanism and the thrust mechanism moves the blade to the open position. A knife includes a stop pin connected to a tang of a blade and a stop plate positioned within a knife handle. The stop plate has two angled surfaces. The stop pin mates with both angled surfaces and the blade is constrained from movement in two planes.

A knife include a handle, button, blade with an integral tang, locking mechanism within the tang, and thrust mechanism. The blade moves between closed and open positions. The button may axially slide along the handle. When the blade is in the closed position and locked, movement of the button towards the first handle end releases the locking mechanism and the thrust mechanism moves the blade to the open position. A knife includes a stop pin connected to a tang of a blade and a stop plate positioned within a knife handle. The stop plate has two angled surfaces. The stop pin mates with both angled surfaces and the blade is constrained from movement in two planes.

A utility knife is provided, including: a housing, including first and second compartments; a blade holder, movably received within the first compartment; a blade storing carrier, detachably inserted in the second compartment, including a receiving portion for receiving at least one spare blade; an elastic unit, disposed between the housing and the blade storing carrier; and a locking mechanism, including a base body disposed to the housing, a movable member attached to the base body and movable between locking and release positions, a first engaging member disposed on the movable member and a second engaging member disposed on the receiving portion and releasably engagable with the first engaging member, when the is second engaging member is disengaged from the second engaging member, the elastic unit biases the receiving portion to eject the blade storing carrier.

A utility knife is provided, including: a housing, including first and second compartments; a blade holder, movably received within the first compartment; a blade storing carrier, detachably inserted in the second compartment, including a receiving portion for receiving at least one spare blade; an elastic unit, disposed between the housing and the blade storing carrier; and a locking mechanism, including a base body disposed to the housing, a movable member attached to the base body and movable between locking and release positions, a first engaging member disposed on the movable member and a second engaging member disposed on the receiving portion and releasably engagable with the first engaging member, when the is second engaging member is disengaged from the second engaging member, the elastic unit biases the receiving portion to eject the blade storing carrier.

An out-the-front knife comprises a handle having a blade channel, a slider channel, and an insert channel interposed between them. A blade in the blade channel and a firing mechanism in the slider channel configured to extend and retract the blade. The blade comprising a blade insert configured to contact the firing mechanism. The firing mechanism comprises a front slider arm, a rear slider arm, a front lock, and a rear lock. When the blade is in the open position, the blade insert is biased against the front slider arm and the front lock and when the blade is in the closed position, the blade insert is biased against the rear slider arm and the rear lock.

An out-the-front knife comprises a handle having a blade channel, a slider channel, and an insert channel interposed between them. A blade in the blade channel and a firing mechanism in the slider channel configured to extend and retract the blade. The blade comprising a blade insert configured to contact the firing mechanism. The firing mechanism comprises a front slider arm, a rear slider arm, a front lock, and a rear lock. When the blade is in the open position, the blade insert is biased against the front slider arm and the front lock and when the blade is in the closed position, the blade insert is biased against the rear slider arm and the rear lock.