Mill device
AssigneeJapan Porlex & Co., Ltd.
InventorKazuhiko KANAZAWA
Life of this patent
Estimating the term…
Abstract
A coffee mill 1 to which the present invention is applied includes a milling unit 2 which mills, with an inner blade 8, coffee beans 5, a drive shaft 3 in which one end is cooperatively coupled to the inner blade 8 and in which on the shaft center 23 of the other end, a rectangular shaft portion 21 is formed that has a predetermined twist around at least part of the shaft center in a shaft center direction and that is rectangular in cross section and an operating handle 4 to which a rectangle shaft hole 22 that is rectangular in plan view is open and which is coupled to the drive shaft 3 by externally fitting the rectangular shaft hole 22 to the rectangular shaft portion 21.
Claims5
A mill device comprising:
- a milling unit which mills, with a rotary member, an item to be milled;
- a drive shaft in which one end is cooperatively coupled to the rotary member and in which on a shaft center of the other end, a rectangular shaft portion is formed that has a predetermined twist around at least part of the shaft center direction and that is rectangular in cross section;
- and
- an operating handle to which a rectangle shaft hole that is rectangular is plan view is open and which is coupled to the drive shaft by externally fitting the rectangular shaft hole to the rectangular shaft portion.
Dependencies are inferred from the claim text.