| 摘要 |
An improved cutter knife and particularly to a cutter knife allowing positive and inverse gripping when in use consists of an upper shell and a lower shell that are coupled to form a body. The body has one end forming a handgrip conforming to ergonomics to allow positive and inverse gripping. The handgrip has a blade anchor section and a blade fast change section on one end to allow positive or inverse gripping and fast replacement of the blade. The positive gripping may be used for ordinary cutting such as for paper or cloths. The inverse gripping may be used for heavy duty cutting with a greater force such as for cardboard or wooden laminates. Thus it provide dual functions and may be used conveniently to overcome the limitation of conventional cutter knives that allow only positive gripping.
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