Abstract: The present invention discloses a guard assembly for a saw blade, which includes an inner guard portion and an outer guard portion. The inner and outer guard portions define a containing space therebetween. A circular saw blade includes two parallel sides and a rotating axis perpendicular to the two sides. At least a portion of the saw blade is located within the containing space. The outer guard portion is pivotally connected with the inner guard portion about a pivotal axis which is substantially parallel to each side of the blade. The improved guard assembly, which can be opened laterally, is convenient to change the saw blade and to clean the inner of the guard.

Abstract: An auto hammer having housing, a handle and a striking device, the striking device including a striking rod for striking nails or other components in a linear reciprocating manner and a clamping mechanism for clamping nails or other components. The clamping mechanism includes clamping elements and a sleeve and the sleeve is provided with slots along which the driving portions of the clamping elements may slide so that the clamping elements are movable between a closed position and an opened position. This clamping mechanism can reliably clamp nails or other components to facilitate the operation of the user.

Abstract: This invention provides an auto hammer comprising a housing, a head assembly including a striking device and transmission mechanism. The striking device includes a striking rod having a striking end. The transmission mechanism includes an impact wheel. The distance from the end surface of the striking end of the striking rod to the center of the impact wheel between 40 min and 100 mm. This distance is arranged very small, in favor of the hammer being used in some narrow spaces. The auto hammer according to this invention meets the requirements of being used in narrow spaces by hands, thereby suitable for use in various circumstances.

Abstract: A laser distance finder including a laser generating device, a collimating lens positioned in an emitting end direction of the laser generating device, a receiving lens for receiving a reflected measuring beam from an object to be measured and focusing it into an image, an optoelectronic detector disposed in the distance finder, a reflective member rotatably mounted on an optical path of the collimating measuring beam via a rotating shaft and being capable of rotating to a first position and a second position around the rotating shaft, which is connected to an output shaft of a motor. The laser distance finder further includes a spring, and the reflective member that rotates to a desired position rapidly and exactly by utilizing various deformation status of the spring, thus saving power.

Abstract: The present invention discloses a self-leveling laser apparatus, of which the pendulum can be locked, and a method for controlling the same. The self-leveling laser apparatus of the present invention comprises a housing, a pendulum hanging within the housing, at least one laser generator fixed on the pendulum, a power source electrically connected with the laser generator, and a locking device for fixing the pendulum. The locking device includes a motor, and a locking member which is activated by the motor and movable between a fixed position and a released position. The locking member has a locking surface, and the pendulum has a contacting surface. When the locking member is in the fixed position, the locking surface thereof contacts the contacting surface of the pendulum. When the locking member is in the released position, the locking surface thereof does not contact the contacting surface of the pendulum.

Abstract: The present invention discloses a work table mainly for supporting a cutting tool or a workpiece. The work table includes a support leg arrangement formed from a plurality of telescoping legs. A tool or workpiece bearing portion is mounted on the support leg arrangement. The bearing portion including a first bearing member and a second bearing member. At least one guide bar extends between the first and second bearing members. To permit movement, the first bearing member is movably arranged on the guide bar. The second bearing member is fixed relative to first bearing member by the support leg arrangement. The work table also includes a locking mechanism for securing the first bearing member relative to the second bearing member to define a use position. The locking mechanism, including a sleeve, a locking member, and a fixing member, is affixed to the guide bar between the first and second bearing members.