초록 ▼

A utility knife includes a mechanism for detaching the individual blade segments along segmentation lines from a segmented knife blade. The detachment mechanism includes a plunger located at the forward end of the utility knife. An adjustment mechanism advances the knife blade for alignment between

A utility knife includes a mechanism for detaching the individual blade segments along segmentation lines from a segmented knife blade. The detachment mechanism includes a plunger located at the forward end of the utility knife. An adjustment mechanism advances the knife blade for alignment between the plunger and a retention chamber. Actuation of the plunger exerts a transverse force on the blade segment, detaching same from the remainder of the blade. The retention chamber prevents the detached blade segment from flying from the utility knife where it could cause injury or damage. Optionally, the utility knife may include a spare blade storage compartment and/or a guidance mechanism to facilitate the cutting of straight or curved lines in particular situations.

대표청구항 ▼

A mechanism for detaching blade segments along segmentation lines from a segmented knife blade contained within a housing comprising, means in said housing for supporting one longitudinal face of said knife blade, said support means having an edge disposed for substantial alignment with said segment

A mechanism for detaching blade segments along segmentation lines from a segmented knife blade contained within a housing comprising, means in said housing for supporting one longitudinal face of said knife blade, said support means having an edge disposed for substantial alignment with said segmentation lines of said knife blade, means for adjusting said knife blade so that at least one blade segment extends adjacent an unsupported region beyond said edge of said support means, and plunger means slidably disposed in said housing opposite said unsupported region to impart a lateral force upon said at least one extended blade segment to detach said at least one extended blade segment from said knife blade.