Abstract: A vacuum cleaner comprising a handpiece, a brush, a rod, and a pivotal assembly that connects the handpiece and the brush. The pivotal assembly comprises a pivotal tube and a pivotal saddle, the pivotal saddle being pivotally connected to the brush about a first axis such that the pivotal saddle is turnable back and forth relative to the brush; the pivotal tube and the pivotal saddle are pivotally connected about a second axis, the pivotal tube being provided with a joint portion, the brush being provided with a fitting portion, the joint portion and the fitting portion being capable of engaging with each other, so that the pivotal tube is locked and not pivotable about the second axis.

Abstract: In an angle-grinder with a rotating handle and a latch for fixing the handle in two different rotational positions, an interlock mechanism is provided for greater security against unwanted rotation of the handle when the tool is being used. The interlock mechanism is moved to a locking position by depressing the trigger to start the motor, and thus provides a safety lock backing up the latch, in case the latch is accidentally released during use. In its unlocking position the interlock mechanism may prevent actuation of the trigger when the handle is not properly aligned in one of its operating positions.

Abstract: In an angle-grinder with a rotating handle and a latch for fixing the handle in two different rotational positions, an interlock mechanism is provided for greater security against unwanted rotation of the handle when the tool is being used. The interlock mechanism is moved to a locking position by depressing the trigger to start the motor, and thus provides a safety lock backing up the latch, in case the latch is accidentally released during use. In its unlocking position the interlock mechanism may prevent actuation of the trigger when the handle is not properly aligned in one of its operating positions.