Patent ID: 11911885
Assignee: MAX CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 3:
4. A driving tool comprising:
a striking mechanism configured to be actuated by a combustion pressure of a mixed gas of compressed air and fuel;
a combustion chamber in which the mixed gas of compressed air and fuel is combusted; and
a valve member which is actuated by pressure variation of the combustion chamber, and configured to open and close communication between the striking mechanism and the combustion chamber,
wherein a valve support member is configured to support the valve member and has a diameter smaller than a diameter of the striking mechanism, and the valve support member is provided in the combustion chamber along an axial direction of the striking mechanism,
wherein an actuation surface of the valve member is located radially inside the valve support member and the actuation surface of the valve member is located on an outer peripheral surface of the valve member, and
wherein the actuation surface of the valve member is configured and arranged to receive combustion pressure from the combustion chamber.