Patent ID: 6802126
Filing Date: 2004-10-12
Classification: B26B

Abstract:
A utility knife, comprising:a handle having a first casing and a second casing, a blade holder slidably received in said handle, a blade mounted on said blade holder, means for driving said blade holder to move, and a lock device pivoted on said first casing of said handle to be turned between an unlock position and a lock position, wherein said lock device has at least a rib projected from a diameter orientation thereof and said second casing has a through hole and a gap beside said through hole and communicates with said through hole; whereby said second casing is secured with said first casing while said lock device runs through said through hole of said second casing and is turned to the lock position for said rib against said second casing and said second casing is disassembled from said first casing while said lock device is turned to the unlock position for said rib corresponding to said gap; said first casing has a recess portion having a through hole at a bottom side thereof and said lock device has a base member having a base portion received in said recess portion and a rod portion through said through hole; and wherein said first casing has at least a block at the bottom side of said recess portion and said lock device has at least a block at an interior side of said base portion to limit said lock device only rotating within a predetermined angle.