Patent ID: 6324763
Filing Date: 2001-12-04
Classification: B26B

Abstract:
An improved art design knife comprised of a first cover, a front second cover, a rear second cover, a blade mount, a blade, a release button, and a press button, wherein:the first cover has a thickness which gradually diminishes from a back towards a front and has a curved L-shaped profile; a guide channel is formed along a center of a front portion of the first cover, the blade mount mounting the blade in the guide channel; a guide slot formed at an upper exterior side of the first cover and having a number of stepped engagement notches disposed along facing inner sides, with a detent notch formed at a front end of the guide slot; a partition element projecting from the first cover with a mortise formed therein; a rear portion of the first cover adjacent to the partition element forming a storage compartment for a placement of a plurality of extra blades; and a first semicircular hole formed at the rear portion of the first cover with a tab having a hook slot adjacent thereto;the front second cover mounted onto the front portion of the first cover, and having an exterior lateral surface with an elongated hole, the front second cover having a tapered section, the front second cover mounted to the first cover by means of a fastening bolt;a retention button mounted on a retention block having a taper on an inner side corresponding to and in contact with the tapered section of the front second cover such that when pushed forward, pressure is exerted against a lateral surface of the blade, thereby eliminating a clearance between the blade and the first cover;a rear second cover mounted onto the rear portion of the first cover having a tenon inserted into the mortise in the partition element, and a second semicircular hole aligned with the first semicircular hole of the first cover and a push plate and a hook mounted on a rear end of the rear second cover;the release button is inserted into the detent notch of said first cover and a spring is installed between said release button and the detent notch, a release block protruding from an outer side of the release button to separate a retaining element blade mount to facilitate replacement of the blade, whereby pushing the retention button forward exerts pressure against a lateral surface of the blade to eliminate the clearance between the blade and the first cover to prevent lateral movement of the blade while cutting: and pushing the release button causes the release block to separate from the retaining element of the blade mount, whereupon the retaining element is disengaged from the blade to permit replacement of the blade.