Abstract: A driving tool includes 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 to be combusted, a valve member configured to open and close communication between the striking mechanism and the combustion chamber, and a valve support member configured to support the valve member. The valve member has a seal part provided on an outer peripheral surface along a moving direction of the valve member.

Abstract: At least one of the electrodes of a discharge lamp, including at an interior of a main body of the electrode: a heat-transmitting substance of the melting point lower than that of a material which makes up the main body; and a regulating body that is made up of a material of the melting point higher than that of the heat-transmitting substance, that includes a blade which extends in the axial direction and in a radial direction perpendicular to the axial direction, and that regulates convection of the heat-transmitting substance. Surface roughness Rz of at least one of a region which is on an inner wall face of the main body and with which the regulating body makes contact and a region which is on a surface of the regulating body and with which the inner wall face makes contact is not greater than 1.52 ?m.

Abstract: At least one of the electrodes of a discharge lamp, including at an interior of a main body of the electrode: a heat-transmitting substance of the melting point lower than that of a material which makes up the main body; and a regulating body that is made up of a material of the melting point higher than that of the heat-transmitting substance, that includes a blade which extends in the axial direction and in a radial direction perpendicular to the axial direction, and that regulates convection of the heat-transmitting substance. Surface roughness Rz of at least one of a region which is on an inner wall face of the main body and with which the regulating body makes contact and a region which is on a surface of the regulating body and with which the inner wall face makes contact is not greater than 1.52 ?m.

Abstract: A driving tool includes a main body, a trigger, a contact member and a control unit. The main body has a combustion chamber configured to be filled with fuel and compressed air. The trigger is configured to operate an ignition device to combust a mixture of the fuel and the compressed air filled in the combustion chamber. The contact member is brought into contact with a driving target member to enable an operation of the trigger. The control unit is configured to start an injection of the fuel when the contact member is turned on, and to complete an injection of the air after the trigger is turned on.

Abstract: A gas combustion type driving tool includes an output unit, a grip, a fuel container storage unit, a battery mounting unit and a coupler. The output unit includes a combustion chamber. The grip is connected to a lower surface of the output unit. A fuel container is detachably attached to the fuel container storage unit. A battery pack is detachably attached to the battery mounting unit. The coupler is configured to take air in. The fastener is driven out by combustion pressure when mixed gas of combustible gas supplied from the fuel container and compressed air supplied from outside via the coupler is ignited. The coupler is disposed on a lower end side of the grip. The gas combustion type driving tool includes a pipe configured to connect the coupler and the combustion chamber.

Abstract: A driving tool includes 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 to be combusted, a valve member configured to open and close communication between the striking mechanism and the combustion chamber, and a valve support member configured to support the valve member. The valve member has a seal part provided on an outer peripheral surface along a moving direction of the valve member.

Abstract: A gas combustion type driving tool drives a fastener by combustion pressure when mixed gas of combustible gas and compressed air in a combustion chamber is ignited. The gas combustion type driving tool includes an air ejection valve, and a gas ejection valve. The air ejection valve is configured to eject compressed air into the combustion chamber. The gas ejection valve is configured to eject combustible gas into the combustion chamber. Output related to driving of a fastener is adjustable by adjusting at least one of filling pressure of compressed air or filling pressure of combustible gas.

Abstract: A driving tool includes 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 to be combusted, a valve member configured to open and close communication between the striking mechanism and the combustion chamber, and a valve support member configured to support the valve member. The valve member has a seal part provided on an outer peripheral surface along a moving direction of the valve member.

Abstract: A driving tool includes a striking cylinder comprising a piston configured to be actuated by a combustion pressure of a mixed gas of compressed oxidant and fuel, a combustion chamber in which the mixed gas of compressed oxidant and fuel is to be combusted, an oxidant supply port for supplying the compressed oxidant into the combustion chamber, a fuel supply port for supplying the fuel into the combustion chamber, and a check valve provided to at least one of the oxidant supply port and the fuel supply port.

Abstract: A driving tool includes 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 to be combusted, a valve member configured to open and close communication between the striking mechanism and the combustion chamber, and a valve support member configured to support the valve member. The valve member has a seal part provided on an outer peripheral surface along a moving direction of the valve member.

Abstract: A driving tool includes a striking cylinder including a piston configured to be actuated by a combustion pressure of a mixed gas of compressed oxidant and fuel, a combustion chamber in which the mixed gas of compressed oxidant and fuel is to be combusted; a valve member configured to open and close communication between the striking cylinder and the combustion chamber, and a striking cylinder exhaust valve configured to open and close communication between the striking cylinder and an outside.

Abstract: A driving tool includes a striking cylinder including a piston configured to be actuated by a combustion pressure of a mixed gas of compressed oxidant and fuel, a combustion chamber in which the mixed gas of compressed oxidant and fuel is to be combusted, and an exhaust valve configured to be actuated by change in pressure in the striking cylinder from actuation of the piston.

Abstract: A driving tool includes a main body, a trigger, a contact member and a control unit. The main body has a combustion chamber configured to be filled with fuel and compressed air. The trigger is configured to operate an ignition device to combust a mixture of the fuel and the compressed air filled in the combustion chamber. The contact member is brought into contact with a driving target member to enable an operation of the trigger. The control unit is configured to start an injection of the fuel when the contact member is turned on, and to complete an injection of the air after the trigger is turned on.

Abstract: A driving tool includes a combustion chamber, a cylinder, a valve and a control unit. Fuel and compressed air are supplied into the combustion chamber. The cylinder is configured to movably store a piston which is driven by combustion pressure at a time of igniting a mixture of the fuel and the compressed air filled in the combustion chamber. The valve is configured to open and close a passage through which the compressed air is supplied into the combustion chamber. The control unit is configured to control the valve to supply the compressed air into the combustion chamber when the control unit determines that a return of the piston is completed.

Abstract: A gas combustion type driving tool includes an output unit, a grip, a fuel container storage unit, a battery mounting unit and a coupler. The output unit includes a combustion chamber. The grip is connected to a lower surface of the output unit. A fuel container is detachably attached to the fuel container storage unit. A battery pack is detachably attached to the battery mounting unit. The coupler is configured to take air in. The fastener is driven out by combustion pressure when mixed gas of combustible gas supplied from the fuel container and compressed air supplied from outside via the coupler is ignited. The coupler is disposed on a lower end side of the grip. The gas combustion type driving tool includes a pipe configured to connect the coupler and the combustion chamber.

Abstract: A gas combustion type driving tool drives a fastener by combustion pressure when mixed gas of combustible gas and compressed air in a combustion chamber is ignited. The gas combustion type driving tool includes an air ejection valve, and a gas ejection valve. The air ejection valve is configured to eject compressed air into the combustion chamber. The gas ejection valve is configured to eject combustible gas into the combustion chamber. Output related to driving of a fastener is adjustable by adjusting at least one of filling pressure of compressed air or filling pressure of combustible gas.

Abstract: A driving tool includes a striking cylinder comprising a piston configured to be actuated by a combustion pressure of a mixed gas of compressed oxidant and fuel, a combustion chamber in which the mixed gas of compressed oxidant and fuel is to be combusted, an oxidant supply port for supplying the compressed oxidant into the combustion chamber, a fuel supply port for supplying the fuel into the combustion chamber, and a check valve provided to at least one of the oxidant supply port and the fuel supply port.

Abstract: In a valve in which a valve port is opened and closed by a spherical valve disc, a valve seat is pressed and supported by a support ring. A snap ring which engages with an annular groove around the support ring is inserted together with the support ring into the port. A screw is screwed into an axial threaded bore of the support ring to expand diameter of the snap ring, which results in engaging the snap ring with an annular groove of the port. Thus, the support ring is fitted in the port.