| 摘要 |
A carton opener comprising a razor blade holder and a sheath. The holder comprises a strip of sheet metal folded on itself to have first and second layers joined at one end. A blade is receivable between the layers adjacent the folded end. The strip at the folded end is cut away at one corner to receive and expose a corner of the blade and is rebated at an edge opposite the cut-away corner to receive the sides of the blade back. The layers are crimped adjacent the folded end to tightly grip the sides of the razor blade. The layers are joined together by striking the layers with a die from one side to form an indentation in one layer extending into the other layer to swage the layers together at the indentation and to form a boss in the other layer extending outwardly therefrom. The sheath comprises a body portion and a guide portion extending generally forward from a forward end of the body portion. The body portion is closely fitted about the holder and slidable thereon from a blade covering position to a sheath retracted position. The body portion further includes a notch in one face thereof for receiving the boss to serve as a positive stop for the holder when the sheath is moved to its retracted position. The guide portion is configured for guiding the corner of the blade along an edge of a carton.
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