Adjustable depth safety cutter
OwnerRaymond E. Davisinventor
Life of this patent
Estimating the term…
Abstract
An improved carton cutter has an incrementally extendable fully retractable first cutting blade with a depressible safety guard at its front end. A strap cutting second blade is fixed at a hooked rear end of the cutter. A ratchet mechanism provides audible evidence of the amount of blade extension and a pointer shows the position of the front blade. The front blade is mounted on a lockable slide. Both blades are easily removable without disassembly and precisely positioned without noticeable play.
Claims25
An adjustable depth safety cutter for boxes comprising:
- an elongated body having a front end portion with a cutting face, an intermediate handle section and a rear end portion;
- a blade holding slide mounted for linear movement in the body, the slide having a knife holding head which extends and retracts through an opening in the cutting face and a resilient member attached to the slide which tends to keep the knife holding head retracted with respect to the cutting face;
- a manually operated slide button on the blade holding slide which extends from a slide opening in the intermediate handle section and includes a first locking mechanism which selectively locks the slide in a desired locked position and has an unlocked position which allows the slide to move linearly;
- a second locking button which engages the slide in a holding position which holds the slide in a plurality of extended positions of the knife holding head with respect to the cutting face and a release position which releases the slide for retraction;
- and
- a depressible spring loaded knife guard extending from an opening in the cutting face in front of the knife holding head.
An adjustable depth safety cutter for boxes comprising:
- an elongated body having a front end portion with a cutting face, an intermediate handle section and a rear end portion;
- a blade holding slide mounted for linear movement with respect to the body, the slide having a knife holding head which extends and retracts through an opening in the cutting face and a resilient member attached to the slide which tends to keep the knife holding head retracted with respect to the cutting face;
- a manually operated slide button on the blade holding slide which extends from a slide opening in the intermediate handle section;
- a second locking button which engages the slide in a holding position which holds the slide in any of a plurality of extended positions of the knife holding head with respect to the cutting face, said locking button having a release position which releases the slide for retraction;
- and
- a depressible spring loaded knife guard extending from an opening in the cutting face in front of the knife holding head.
An adjustable depth safety cutter for boxes comprising:
- an elongated body having a front end portion with a cutting face, an intermediate handle section and a rear end portion;
- a blade holding slide which is mounted for linear movement with respect to the body, said slide having a knife holding head which is selectively movable to at least partially extend from the cutting face at the front end portion of the body;
- and
- at least one slidable edge guide which is slidingly mounted at the front end portion of the elongated body for movement between a first position in which the guide is not extended from the cutting face and a second position in which the guide has a portion extended beyond the cutting face thereby providing a guide for lateral positioning of the knife holding head with respect to an edge of a box.
Dependencies are inferred from the claim text.