461results about "Power driven reciprocating saws" patented technology

A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided. The surgical saw blade may have a distal end having at least one pair of teeth configured to be adjacent to each other and each of the pair of teeth is configured as a right triangle each having a hypotenuse which is oriented at least one of towards and away from the centrally positioned long axis.

An elongated pole pruner for cutting and trimming trees, bushes and the like having three separable sections, that when assembled, form an extended length pruner. The pole pruner includes a first section containing a handle and battery pack, a second extension section, and a third section that contains the purner itself. Each of the sections contains an electrical conductor that is attached to corresponding conductor in an adjacent pole sections via a male plug and female receptacle. In this way, the battery pack in the first section of the pole is able to deliver power through the second section to the pruner in the third section.

A saw blade for medical, in particular surgical, applications having a recess for mounting the saw blade inside a saw which exerts an saw movement, especially an oscillating saw movement, to the saw blade. In order to improve the dynamic behavior of the saw blade, longitudinal flat areas of a surface of the saw blade are provided with a plurality of superficial impressions of a defined contour that are aligned at an angle to the longitudinal axis of the saw blade.

An extendable hedge trimmer includes a housing having a handle end and a tool end. The handle end includes a battery and an electrical connector. The tool end includes a hedge trimming implement, a motor, and an electrical connector. The electrical connector of the tool end is electrically connected with the motor. Wiring is included within the handle end for electrically connecting the battery and the electrical connector of the handle end. The trimmer also includes a pole which is releasably connectable between the tool end and the handle end. The pole is configured for electrically connecting the handle end with the tool end. The trimmer also includes a latch mechanism for releasably attaching the pole between tool end and handle end. The trimmer also includes an input for receiving AC line power via a power cord, the trimmer configured for being powered by AC line power and / or battery power.

The present invention provides multi-directional oscillation from a rotational source, by receiving a rotational motion, converting the rotational motion to a first oscillating motion, converting the first oscillating motion to a second oscillating motion that is normal to the first oscillating motion and transferring the first oscillating motion and the second oscillating motion to a working element.

An adjustable reciprocating saw has the ability to adjust the orientation of the saw blade in relation to the rest of the tool. The saw blade can pivot about two transverse axes, one parallel with and one perpendicular to the reciprocating motion axis of the saw blade. The portions of the saw's housing which rotate relative to one another are attached with a rotating joint comprising a pin and groove design. Rotation locks selectively prevent rotation of the saw blade about each axis. The rotation locks can be released through simply depressing buttons on the saw. A rear internal bearing increases the durability and decreases the size of the saw. A keyless adjustable shoe is mounted to the saw.

There is provided a reciprocating saw blade having a tapered tang stem. The tang has a tang portion with at least three outer edges and a stem portion with at least three outer edges. The profiles of the tang portion and particularly the stem portion are such that they facilitate the effective and efficient engagement of the saw blade with any of numerous different keyed or keyless chucks of reciprocating saws. The tang / stem profile also advantageously provides for increased strength for resisting failure and / or fatigue stemming from a cutting force applied to the saw blade during use.

The invention discloses a power tool and an operation method thereof. The power tool comprises a shell, an output shaft, a fixing component, a locking component and a driving mechanism. A working head is mounted on the output shaft, is driven to work by the same, and is provided with a supporting portion extending out of the shell. The fixing component is used for fixing the working head onto the supporting portion of the output shaft. The locking component is supported on the output shaft and used for locking the fixing component. The driving mechanism is rotationally mounted on the shell, rotates along a first direction operably to drive to lock the locking component with the fixing component by threads, or rotates along a direction opposite to the first direction operably to drive to unlock the locking component from the fixing component. The power tool can be used for mounting or demounting the working head quickly without any other auxiliary tools, and can provide high axial pressing force to guarantee against slip off of the working head. The operation method of the power tool is easy and reliable.

A cable cutter for attachment to a power drill has a housing, first and second cutting blades connected to the housing for movement relative to one another and a drive assembly releasably engageable with the chuck of the drill and operatively engaged with at least one of the cutting blades. The drive assembly includes a worm mounted on a drive shaft, a worm gear and a drive gear mounted on a main shaft, and a segment gear formed on one of the cutting blades. The worm and worm gear which are in engagement, as are the drive gear and segment gear. The main shaft is supported in the housing by three bearings. A torque arm is attached at one end to the housing and adapted at its other end to engage the handle of the drill. A reversible stabilizing handle attaches to the housing to allow the user to securely grip the housing during cutting operations.

A hand tool includes a replaceable cutting portion having an elongate cutting surface, a body and a handle. The body receives displaceable protecting apparatus for shielding the cutting surface of the cutting portion when not in use. A forward distal end of the protecting apparatus contacts a portion of the surface of the object to be cut such that when pressure is applied against the object surface displacement of the protecting apparatus relative to the replaceable cutting portion is effected to expose only as much of the cutting surface as needed to effect the required cut. Alignment means maintain alignment of the replaceable cutting portion relative to the protecting apparatus throughout the cutting. When the cutting action is completed resilience means facilitates return of the protecting apparatus so the cutting surface is no longer exposed.

The present invention relates to a keyless blade clamp mechanism including a base, a sliding block slidably disposed on the base and a clamping lever pivotally connected on the base. On one pivot side of the clamping lever is a clamp plate and on the other pivot side of the clamping lever is a plate. The base has a supporting surface opposing the clamp plate. In use, the sliding block slides to engage and press the plate causing the clamp plate to pivot and a gap to appear between the clamp plate and the supporting surface to permit a saw blade to be inserted into (or be pulled out of) the gap. The present invention has the advantage that few components are involved and it is easily manufactured at low cost.