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AssigneesHangzhou Great Star Tools Co., Ltd., Hangzhou Great Star Industrial Co., Ltd.
InventorWeiyi Wang, JR.
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The present invention first provides a utility knife with a replaceable blade, comprising a knife handle, a blade holder, a blade and a locking device that locks the blade in the blade holder. The blade holder and the blade are enabled to switch between a first position and a second position. When the blade holder and the blade are in the first position, the blade is used for cutting operation, and when the blade holder and the blade are in the second position, both the blade holder and the blade are received in the knife handle. The utility knife further includes a restriction means which is thus arranged as, when the blade holder is in the second position and the locking device is in unlocked state, the restriction means is used for preventing the detachment of the blade from the blade holder by confining the movement of the blade relative to the blade holder. The present invention also provides a folding utility knife with a replaceable blade and a retractable utility knife with a replaceable blade, and a utility knife with multiple tools and replaceable blades.
A folding utility knife with a replaceable blade, comprising a knife handle, a blade holder, a blade and a locking device that locks the blade in the blade holder, the blade holder and the blade are enabled to be folded and received in the knife handle or to extend out from the knife handle, characterized in that the utility knife further includes a restriction means which is thus arranged that, when the blade holder and the blade are folded and received in the knife handle and the locking device is in unlocked state, the restriction means is used for preventing the detachment of the blade from the blade holder by restricting the movement of the blade relative to the blade holder;
A utility knife with a replaceable blade, comprising a knife handle and multiple tools, the tools are enabled to be received in the knife handle respectively via folding or sliding or to extend out from the knife handle, at least one of the tools includes a blade holder, a blade and a locking device that locks the blade in the blade holder, characterized in that the utility knife further includes a restriction means which is thus arranged that, when the blade holder and the blade are received in the knife handle and the locking device is in an unlocked state, the restriction means is used for preventing the detachment of the blade from the blade holder by restricting the movement of the blade relative to the blade holder;
Dependencies are inferred from the claim text.