| 摘要 |
<p>A safty utility razor knife is normally maintained in a closed condition which protects the user or carrier from accidental injury by the blade (116). No action on the part of the user or carrier is required to lock the protective hood (112) over the blade. The hood (112) pivots into the open position, exposing the razor blade (116), when the knife is in use, and automatically self-locks the safty hood (112) immediately after use, requiring no action or adjustment on the part of the user. The knife is designed for easy use in cutting cartons and other materials, including but not limitted to dry wall, floor carvings, and insulations. The hood is unlocked by the user's thumb by moving a slide forward. The amount of the blade exposed may be determined by a hood stop on the shoulder of the knife, or as regulated by the depth of cut cam action dial (400).</p> |
