Patent ID: 11945083
Assignee: KOKI HOLDINGS CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 11:
12. A method of using a driver, the driver comprising:
a pressure chamber into which gas is filled;
a cylinder forming a part of the pressure chamber;
a piston disposed in the cylinder to travel in a first direction and a second direction opposite to the first direction;
a driver blade coupled to the piston that strikes a stopper by moving in the first direction by pressure of the gas filled in the pressure chamber;
a moving mechanism, comprising a motor that moves the driver blade in the second direction; and
a holding hole having one end communicating to the pressure chamber and another end communicating to an outside of the pressure chamber;
a valve, disposed in the holding hole, and configured to control the gas filled into the pressure chamber, the valve comprising:
a valve core;
a valve body configured to move relative to the valve core in one direction to open the valve, and move relative to the valve core in another direction to close the valve;
an elastic member energizing the valve body towards the another direction to close the valve;

wherein the valve body protrudes from the valve core,
wherein the valve is configured to switch to an open state by mechanical contact, at an inside of the holding hole, between the valve body and an object,
wherein when the valve is in a closed state, the driver is configured to repeatedly strike the stopper by using the gas filled in the pressure chamber to perform a plurality of strikes, the method of using a driver comprising: mounting a charge adapter to the holding hole and sealing the holding hole, supplying the gas, adjusted by a pressure regulator,
to the pressure chamber via the valve.