For a more complete understanding of the present invention, reference will now be made to the following detailed description of preferred embodiments taken in conjunction with the following accompanying drawings.
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Accordingly, the present invention has at least the following advantages.
1. The cutting groove 12 of the present invention is embedded and securely fixed to the receiving portion 111a of the distal end 111 of the carrier 11. Thus, a reinforced structure of the knife comprising the cutting groove 12 and the carrier 11 can be obtained.
2. While cutting, the width W1, W2 of the groove 13 is equal to the length D1, D2 of the first and second cutting portion 121, 122. Therefore, the width W1, W2 of the groove 13 depends on the length D1, D2 of the cutting groove 12.
While the invention has been described in conjunction with a specific best mode, it is to be understood that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations in which fall within the spirit and scope of the included claims. All matters set forth herein or shown in the accompanying drawings are to be interpreted in an illustrative and non-limiting sense.