Back to results
US 2015/0209975 A1Published application
Cutting devices
AssigneeMakita Corporation
InventorsYoshihiro KIMURA, Syuji AOYAMA
Life of this patent
Estimating the term…
Abstract
A cutting device may include a friction reducing device arranged in an operational force transmission path between an operation member and a fixing device that can fix a circular cutter to a rotational shaft of a cutting unit.
Claims19
A cutting device comprising:
- a cutting unit having a rotational shaft;
- a fixing device configured to fixedly attach a circular cutter to the rotational shaft;
- and
- an operation device coupled to the fixing device;
- wherein the operation device comprises:
- an operation member configured to apply an operational force to the fixing device for fixation of the circular cutter to the rotational shaft and for releasing fixation of the circular cutter to the rotational shaft;
- and
- a friction reducing device arranged in an operational force transmission path between the operation member and the fixing device and configured to reduce a frictional force produced between the operation member and the fixing device when the operation member applies the operational force to the fixing device.
5 more elements
A cutting device comprising:
- a cutting unit having an rotational shaft;
- a fixing device configured to fixedly attach a circular cutter to the rotational shaft;
- and
- an operation device coupled to the fixing device;
- wherein the operation device comprises:
- an operation member rotatable about an axis of the rotational shaft;
- and
- a cam device coupled to the operation member
- wherein when the operation member rotates a first direction, the cam device applies an operational force to the fixing device for fixation of the circular cutter;
- and
- wherein when the operation member rotates in a second direction opposite to the first direction, the cam device releases the operational force applied to the fixing device.
8 more elements
A cutting device comprising:
- a cutting unit having an rotational shaft;
- a fixing device configured to fixedly attach a circular cutter to the rotational shaft;
- and
- an operation device including an operational force applying device configured to be capable of applying an operational force to the fixing device for fixation of the circular cutter to the rotational shaft and for releasing fixation of the circular cutter to the rotational shaft;
- and
- wherein the cutting unit further includes a case section configured to cover the circular cutter;
- wherein the operational force applying device includes an operation member supported by the case section so as to be movable relative to the case section for applying the operational force to the fixing device.
4 more elements
A cutting device comprising:
- a cutting unit having an rotational shaft;
- a fixing device configured to fixedly attach a circular cutter to the rotational shaft;
- and
- an operation device coupled to the fixing device and configured to apply an operational force to the fixing device for fixation of the circular cutter to the rotational shaft;
- wherein the operation device comprises:
- a thread member threadably engaged with the rotational shaft so as to be rotatable about an axis of the rotational shaft,
- wherein the thread member applies the operational force to the fixing device for fixing the circular cutter to the rotational shaft when the thread member rotates in a fixing direction;
- and
- wherein the thread member applies the operational force to the fixing device for releasing fixation of the circular cutter to the rotational shaft when the thread member rotates in a releasing direction opposite to the fixing direction;
- a engaging operation device releasably engageable with the thread member for preventing rotation of the thread member;
- and
- a rotation operation device operable to rotate the rotational shaft relative to the thread member when the rotation of the thread member is prevented by the engaging operation device.
9 more elements
Dependencies are inferred from the claim text.