Abstract: A masonry drill bit having an active diameter of D, comprising a shaft and a tip 1 for engaging a workpiece, wherein the tip 1 is formed with a plurality of stepped portions shaped to cut a workpiece as the drill bit rotates. By virtue of the drill bit tip 5 configuration as described and claimed herein, a masonry drill bit 1 having improved performance is provided.

Abstract: A rotary hammer comprises an electric motor having its longitudinal axis perpendicular to the axis of the hammer spindle and the tool holder. A single switching element activates and deactivates the hammer mechanism and the rotary drive for the tool holder. The switching element has an eccentric actuating section extending parallel to the main axis of the switching element, acting on a coupling part to activate and deactivate the hammer drive. The switching element has a cam section acting on a slider part to engage and disengage a coupling sleeve (non-rotatable on the hammer spindle) with a drive sleeve to thereby engage and disengage the rotary drive of the hammer spindle.

Abstract: A cleaning apparatus having a housing, a battery, a motor, an output drive shaft and a movable cleaning section. The connection between the drive shaft and the cleaning section provides linear reciprocating motion of a portion of the cleaning section. In another embodiment orbital motion is provided. In another embodiment rotational motion and linear motion are provided. In another embodiment the user can switch between two types of motion.

Abstract: A shaft locking device (2) enables torque applied to a drive shaft (8) to be transmitted to a driven shaft (10) via a one-way transmission system (6). Any torque applied directly to the driven shaft (10) is not transmitted via the one-way transmission system (6) to the drive shaft (8). A part of the locking mechanism (20) in the one-way transmission system (6) is formed from a compressible resilient material thereby to damp contact between components and hence enable a quiet locking device (2) to result.

Abstract: According to one aspect of the invention, a reciprocating saw 21, 154 comprises a housing 23, 154 pivotable about a first axis 29. A blade holder 49 is mounted for reciprocation along a second axis 53 perpendicular to the first axis. An angular blade drive train 61 is directly connected between a motor 43 and the blade holder. The angular blade drive permits the blade axis of reciprocation 55 to be adjusted in a plane parallel to the saw sidewalls 177. Drive train 61 consists solely of a rotary section 63 and a reciprocating section 65. The rotary section is connected directly between the motor and the reciprocating section. The reciprocating section is connected directly to the blade holder. According to a second aspect of the invention, a reciprocating saw 21,154 comprises a housing 23, a drive train 61, a blade holder 49, and a connector 59. Blade holder 49 is rotatably mounted in connector 59 for rotation about an axis 53 parallel to and spaced from an axis 55 of reciprocation of output bar 57.