Title:
長時間細工用カッター
Document Type and Number:
Japanese Patent JP7300118
Kind Code:
B2
Abstract:
To problem such a conventional problem that in a conventional cutter knife, when performing a cutting work by gripping a cutter knife body with a dominant hand (right hand), holding a material to be cut with the other hand (left hand), bringing an inner surface of a left hand thumb into contact with a back part of the tip of the cutter knife as a point of effort, a width of the back is very narrow, a corner thereof hits the inner surface and the same hurts, making it difficult to continue working.SOLUTION: A part surrounded by a dot line in Fig. A, with which an inner surface portion of a thumb is brought into contact as a point of effort, that is a back of a tip of a cutter knife is widened in a width thereof, and slightly curved at an angle of about 30 degrees, whereby long time working can be performed, also a hard wood can be easily cut, and working accuracy is also significantly improved. The wood can be freely cut thinly or thickly by adjusting a force.SELECTED DRAWING: Figure 1
Inventors:
Kazumoto Koyama
Application Number:
JP2020145063A
Publication Date:
June 29, 2023
Filing Date:
July 06, 2020
Export Citation:
Assignee:
Kazumoto Koyama
International Classes:
B26B1/10; B26B1/08
Domestic Patent References:
| JP2017200550A | ||||
| JP55169382U | ||||
| JP51049251U |
Foreign References:
| US20200009755 | ||||
| EP0090256A1 | ||||
| US20050241111 | ||||
| US6502314 |
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