Abstract: A driving tool includes a hammer which hits instantaneously a connecting member for connecting the hammer with a spindle provided with a wrench at an end thereof. A housing has an on-off switch provided at a grip thereof and is divided into a part chamber in which parts are disposed and a motor chamber in which a motor is disposed. An inertial wheel is installed rotatably in the part chamber and engaged with a shaft of the motor, and a spindle is installed rotatably between the part chamber and the inertial wheel and provided with a connecting member on an outer circumference thereof and a wrench on one end thereof. The hammer is pivotally installed at the inertial wheel to hit the connecting member by centrifugal force according to the rotation of the inertial wheel and returned an initial position by a return spring positioned between the inertial wheel and the hammer. A pair of balls contained in holes are formed at both sides of the inertial wheel and arc shaped grooves formed at the hammer, respectively.

Abstract: Disclosed is a portable centrifugal car washer comprising a storeroom, disposed in a case, for storing car washing liquid, a pump for pumping out the car washing liquid in the storeroom; and a centrifugal unit for rotating the car washing liquid at a high speed, resolving into moisture particles and then spraying the moisture particles on a surface of a car. The car washer performs the washing, drying and polishing operation at the same time and thus remarkably reducing an operation time. Further, the portable centrifugal car washer of the present invention has a small size so that an operator facilely uses, and the car washing liquid can be stored in the car washer. Therefore, the car washer can be facilely carried and kept and also used anywhere at any time.