Abstract: A driving tool having a trigger, such that after the trigger is on-operated, a contact restriction member starts to rotate to a lock side while rotation resistance is applied thereto by a rotation resistance applying member. A lock portion enters a lock receiving portion to prohibit an on-operation of a contact arm after a reference time has passed after the on-operation of the trigger. As a result, an inadvertent driving operation can be prevented. A mechanical timer mechanism allows for a timer control to be effected under an environment where electric power cannot be supplied.

Abstract: A driving tool is provided with first and second grease reservoirs for supplying grease to seal rings present on the outer and inner peripheral circumferences of a head valve in contact with a spring guide. Because of this configuration, wearing off of resistance of the seal rings due to gradual loss of grease can be improved and air leakage therefrom can also be prevented, which can improve durability of the driving tool.

Abstract: By utilizing fixing screws serving as an attachment means of a driver guide with respect to a main body housing and fixing screws serving as an attachment means of a top cap with respect to the main body housing, the top and the bottom of the exhaust cover of an exhaust cover in a driving direction may be fixed to the main body housing such that an attachment position of the exhaust cover is maintained in a stabilized manner.

Abstract: A driving tool having a trigger, such that after the trigger is on-operated, a contact restriction member starts to rotate to a lock side while rotation resistance is applied thereto by a rotation resistance applying member. A lock portion enters a lock receiving portion to prohibit an on-operation of a contact arm after a reference time has passed after the on-operation of the trigger. As a result, an inadvertent driving operation can be prevented. A mechanical timer mechanism allows for a timer control to be effected under an environment where electric power cannot be supplied.

Abstract: A driving tool is provided with first and second grease reservoirs for supplying grease to seal rings present on the outer and inner peripheral circumferences of a head valve in contact with a spring guide. Because of this configuration, wearing off of resistance of the seal rings due to gradual loss of grease can be improved and air leakage therefrom can also be prevented, which can improve durability of the driving tool.

Abstract: By utilizing fixing screws serving as an attachment means of a driver guide with respect to a main body housing and fixing screws serving as an attachment means of a top cap with respect to the main body housing, the top and the bottom of the exhaust cover of an exhaust cover in a driving direction may be fixed to the main body housing such that an attachment position of the exhaust cover is maintained in a stabilized manner.

Abstract: A power tool that includes a driving motor and a power transmitting mechanism. The power transmitting mechanism includes a first clutch cam part, a second clutch cam part, clutch teeth, a clutch detecting mechanism and a controller that can control the driving motor in a first control mode in which the driving motor is controlled to rotate at a first rotation speed until before the first and second clutch cam parts are engaged with each other at the clutch teeth and in a second control mode in which the driving motor is controlled to rotate at a second rotation speed higher than the first rotation speed after the first and second clutch cam parts are engaged with each other at the clutch teeth.

Abstract: A power tool that includes a driving motor and a power transmitting mechanism. The power transmitting mechanism includes a first clutch cam part, a second clutch cam part, clutch teeth, a clutch detecting mechanism and a controller that can control the driving motor in a first control mode in which the driving motor is controlled to rotate at a first rotation speed until before the first and second clutch cam parts are engaged with each other at the clutch teeth and in a second control mode in which the driving motor is controlled to rotate at a second rotation speed higher than the first rotation speed after the first and second clutch cam parts are engaged with each other at the clutch teeth.