Abstract: A combined locking mechanism and switch especially for power tools has a switch, an actuator for directly turning on or off the switch, a locking member shiftable between a first position in which it is disposed in opposed relation to the actuator and a second position in which it is spaced apart form the actuator, and an actuating member for actuating the actuator through the locking member only when the locking member is placed in the first position.

Abstract: A switch is disclosed having a movable piece with a movable contact and a movable plate coil, a fixed terminal provided with a fixed contact facing the movable contact, a movable coil spring with an end being fixed at a standing piece of a common terminal, wherein the other end of the coil spring is coupled to the end of a movable piece, and wherein the movable plate coil is biased by the movable coil spring with one end of the movable plate coil swingably held by a holding piece of the common terminal, and a push-button for pressing the upper portion of the movable coil. The switch has an actuator having a supporting member which rotatably engages with the case, wherein the supporting member is formed in a plane generally perpendicular to a rotary shaft of the actuator.

Abstract: A sealed push-button switch which includes a switching mechanism including a terminal, a case including a space for housing the switching mechanism, and a base which is fixed to the case. A frame for housing the terminal is fixed to the base, and a melted resin material is injected into the frame and set to fix the terminal. When the melted resin is injected into the frame, the air in the case is heated and made to expand by the resin. However, the expanded air leaks out through an air passage which is formed through the case of the base. Air bubbles are accordingly prevented from developing in the resin.