Title:
カッター
Document Type and Number:
Japanese Patent JP4070802
Kind Code:
B1
Abstract:
A cutter is capable of cutting a pipe-shaped object so as to produce a cut surface which is almost perfectly perpendicular to a longitudinal direction of the pipe-shaped object. A blade has a disc-shaped base plate having a blade edge on an outer periphery of the base plate, a level surface perpendicular to an axis of rotation of the base plate, and a sloped surface opposite the level surface and inclined with respect to the level surface so that a thickness of the blade increases toward a central portion of the blade. The sloped surface is shaped such that an angle of inclination of an outer peripheral portion of the sloped surface with respect to the level surface is larger than an angle of inclination of a remaining portion of the sloped surface with respect to the level surface. The level surface has fine grooves thereon. As long as the grooves are formed at intervals from the outer periphery to the center of the blade, the grooves may constitute either a spiral formed all over the level surface 5 or concentric circles.
Inventors:
Chozo Toru
Application Number:
JP2007263292A
Publication Date:
April 02, 2008
Filing Date:
October 09, 2007
Export Citation:
Assignee:
Chozo Toru
International Classes:
B23D21/00
Domestic Patent References:
| JP34004492Y1 | ||||
| JP56076313U | ||||
| JP60162923U | ||||
| JP53117686U | ||||
| JP64030112U | ||||
| JP2002263947A |
Attorney, Agent or Firm:
Hisashi Kato
Mikio Hotta
Mikio Hotta