A razor knife includes a body with a handle a blade carrier portion. The razor blade is secured between the blade carrier and a door by the mutual attraction of pair of magnets.

A lightweight, handheld screen trimmer (10, 20, 30, 40) which aids in trimming excess screen (340) and also in removing, tucking in, and trimming spline (320). The screen trimmer (10, 20, 30, 40) assists in several tasks relating to removing, replacing and installing screening (330) in a screen frame (300).

A handheld razor cutter apparatus for cutting and trimming materials such as screens includes a blade housing coupled to a handle. The handle is coupled to a top plate of the blade housing such that it secures the blade housing in a horizontal position. A bottom plate is selectively engageable with a bottom side of the top plate to secure a razor blade therebetween. The razor blade has an edge encompassed by the perimeter of the bottom plate. The blade housing has a plurality of notches extending through the perimeter. The edge of the razor blade is sharpened on at least a plurality of exposed portions defined by the plurality of notches of the blade housing to perform cuts.

A handheld razor cutter apparatus for cutting and trimming materials such as screens includes a blade housing coupled to a handle. The handle is coupled to a top plate of the blade housing such that it secures the blade housing in a horizontal position. A bottom plate is selectively engageable with a bottom side of the top plate to secure a razor blade therebetween. The razor blade has an edge encompassed by the perimeter of the bottom plate. The blade housing has a plurality of notches extending through the perimeter. The edge of the razor blade is sharpened on at least a plurality of exposed portions defined by the plurality of notches of the blade housing to perform cuts.

A cutting device comprising: a housing containing a cutting blade with a portion of the cutting blade extending from the housing; a safety guard having an end positioned proximate to the cutting blade portion extending from the housing; and a spring-biased safety guard release connected to an elongated member, the elongated member in communication with an arcuate, flat spring extending from a second end of the safety guard. In this manner, as soon as pressure is released from the cutting blade, the safety guard returns to its home position even if the safety guard release button is still being pressed. Thus, the cutting blade is only fully exposed without the safety guard in place when the cutting blade is being used to cut an article.

A cutting device comprising: a housing containing a cutting blade with a portion of the cutting blade extending from the housing; a safety guard having an end positioned proximate to the cutting blade portion extending from the housing; and a spring-biased safety guard release connected to an elongated member, the elongated member in communication with an arcuate, flat spring extending from a second end of the safety guard. In this manner, as soon as pressure is released from the cutting blade, the safety guard returns to its home position even if the safety guard release button is still being pressed. Thus, the cutting blade is only fully exposed without the safety guard in place when the cutting blade is being used to cut an article.

A scraping tool includes a first holding member having a first through-groove between a first holding portion and a first connecting portion. A second holding member includes a second through-groove between a second holding portion and a second connecting portion. The second connecting portion is connected to the first connecting portion to permit the second holding member to sway relative to the first holding member between a holding position and an extended position. A locking device includes first and second abutting portion respectively abutting against the first and second holding member and a sliding portion slideably extending through the first and second through-groove. The locking device is movable relative to the first and second holding member between a locking position in which the second holding member is in the holding position and a release position in which the second holding member is movable to the extended position.

A cushion back cutter includes finger holes that are shaped to make blade changes and adjustments faster and easier. The cushion back cutter includes a center plate with a recess forming a blade pocket for holding a slotted razor blade. The center plate includes a finger opening for removing a slotted razor blade. The finger opening, which may be non-circular, crosses an upper wall of the blade pocket that supports the blade. A first side plate attached to a first side of the center plate covers the blade pocket in the center plate, and includes a blade window for removing a slotted razor blade from the blade pocket of the center plate. A second side plate is attached to a second side of the center plate, which also includes a finger opening.

A blade changeable knife includes a first holding member having a first holding portion and a first connecting portion and a second holding member having a second holding portion and a second connecting portion. The second holding portion and the second connecting portion is interconnected by a flexible portion. The second connecting portion is disposed on the first connecting portion. The second holding portion and the first holding portion are disposed oppositely. The second holding member is adapted to be flexed to a holding position and a releasing position in which the first and the second holding portions are disposed apart from each other. Further, a lock is movably engaged with the second holding member. The lock is disposed at a first position when the second holding member is in the holding position and at a second position when the second holding member is in the releasing position.

A scraper includes a first clamping member, a second clamping member, and a locking device. The first clamping member has a first clamping portion and a first connecting portion. The second clamping member has a second clamping portion and a second connecting portion connected with the first connecting portion. The locking device includes a pivoting shaft connected with the first and second pivoting portions, and a switching button disposed on the second clamping member and connected with the pivoting shaft. The switching button is relatively rotatable between a locking position and a releasing position with the pivoting shaft as the center with an angle of less than 180 degrees to cause the second clamping portion to approach or move away from the first clamping portion.