Utility Cutter

Abstract

A knife includes a handle that includes a gripping surface; a blade slide positioned in a recess of the handle that extends from an opening of the handle through a cavity within the handle; a blade coupled to the blade slide near a proximal end of the blade and extending through the recess and into the opening when the blade slide is in the retracted position; and a guide coupled to the blade near a distal end of the blade opposite the proximal end, the guide including a contoured surface configured to engage a workpiece to extend the blade slide a distance from the retracted position to an extended position such that the blade is extended from the opening of the handle, the blade slide biased to move from the extended position to the retracted position.

Description

TECHNICAL BACKGROUND[0001]This disclosure relates to cutting rigid and semi-rigid materials.BACKGROUND[0002]Utility cutters may be used to cut or slice a variety of materials, such as cardboard, corrugated board of varying thickness, rubber, lightweight plastic, or other packaging material. In order to cut or slice such material, the utility cutter may need to have a sharpened blade. Certain precautions may be used to protect or help protect a user from the sharpened blade. For example, a utility cutter may include guards that extend from the cutter alongside the sharpened blade, such that the guards substantially prevent an accidental injury to the user or other bystander. Further, a utility cutter may include a protective handle that encloses substantially all of a blade during periods of non-use. Utility cutters, however, may be actuated accidentally even during periods of storage or non-use. Accidental actuation of a utility cutter, therefore, may present a substantial hazard to...

AI Technical Summary

Benefits of technology

[0037]Various implementations of a utility cutter according to the present disclosure may include one or more of the following features. The utility cutter may provide for extension of a cutting blade from a housing based on engagement with the blade (or a guide attached to the blade) with a work piece, rather than based on any actuation initiated by a user. Thus, user action (e.g., pushing a blade from a housing through thumb action or a gripping action) may be decreased, thereby allowing the user to save energy, decrease injuries, and / or increase work output cutting or slicing the workpiece. As another example, the cutting blade may be covered (e.g., by a guide and / or cap) to protect the user from contact with the blade while still allowing full use of the cutter. As yet another example, the utility cutter may include automatic retraction of the blade (or a cutting edge portion of the blade) into a housing for safety when the blade is not in use (e.g., engaging a workpiece). The blade may be a replaceable blade as well, thereby being more cost effective. As another example, the cutter may be configured so that only a cutting edge of the blade engages the workpiece, thereby limiting a force necessary to cut the workpiece with the blade.

[0038]Various implementations of a utility cutter according to the present disclosure may also include one or more of the following features. The utility cutter may not have a fixed depth of cut but may instead have a variable depth of cut. The depth of cut may be varied to a particular depth depending on a thickness of the material to be cut (e.g., single wall corrugated board, double wall corrugated board, triple wall corrugated board, or other material, like cellophane tape, or other adhesive material). The depth of cut may be determined by the cutter automatically or semi-automatically without additional action by the user beyond engagement of the material with the cutter. As another example, the cutter may allow for piercing of a material without blade engagement of the material to initiate a slice or cut, thereby reducing wear on the blade and possible injury to the user. In some implementations, the cutter may be made of washable material that reduces waste, dirt, and other materials from penetrating into an interior housing of the cutter.

Problems solved by technology

Utility cutters, however, may be actuated accidentally even during periods of storage or non-use.

Accidental actuation of a utility cutter, therefore, may present a substantial hazard to the user, other persons, or valuable material.

Images