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US 11,471,956 B2Granted
Tool device and reaction bar
AssigneeForest Research and Management Organization
InventorsAkira Kagawa, Takeshi Fujiwara
Life of this patent
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Abstract
A tool device has a deceleration unit, a tip tool, and a reaction bar. The deceleration unit increases a torque that is input to the deceleration unit. The tip tool is rotated when receiving a motive force from the deceleration unit. The reaction bar is fixed to the deceleration unit. An external force can be made to act on the reaction bar to receive a reaction force that is generated during rotation of the tip tool.
Claims13
A tool device comprising:
- a deceleration unit that has a plurality of gears and is configured to increase a torque input from a motive force tool that is held by an operator;
- a boring tip tool configured to rotate upon reception of a motive force from the deceleration unit;
- a reaction bar configured to be fixed to the deceleration unit and allow the operator to stably receive a reaction force produced when the boring tip tool rotates;
- and
- a socket to which a base end portion of the boring tip tool is attached and which is configured to rotate along with the boring tip tool upon reception of a rotational force from the deceleration unit,
- wherein the socket includes an engagement section that is configured to engage with a rope to be wound around a workpiece to be bored by rotating the boring tip tool, and
- the engagement section protrudes from, and is rotationally fixed to, an outer circumferential surface of the socket and has a shape of a ring or a hook to form a space through which the rope passes.
4 more elements
Dependencies are inferred from the claim text.