A blade attachment system includes a tool mount, a blade holder plate attached to the tool mount adapter; and a clamping assembly attached to the blade holder plate. The clamping assembly includes a plurality of fixed clamping positioned adjacent to at least one of the lateral edges of the blade when the blade is placed on the blade holder plate and including tapered surfaces configured to overlap the lateral edges of the blade and at least one movable clamping pin that is movably mounted to the blade holder plate, the movable clamping pin being configured to move with respect to the blade to move the lateral edges of the blade into engagement with the tapered surfaces of the clamping pins.

Disclosed is a hand-held electric tool, in which a main shaft (1) swings back and forth around an axis (11) to drive accessories (9) of the tool to carry out various types of operations. A swing device is provided with an eccentric element (41) capable of reducing the shock caused to a shell (7) by a connecting rod component (3). Another shell (6) is provided with a valve device (5) used for adjusting the flow of air current in different air ducts. The accessories (9) of the tool can be cooled or cleaned through the air current in one of the air ducts. The main shaft (1) is provided with an elastic support (2) used for balancing the load when an electrical motor (8) is operating. The elastic support (2) can replace a bearing in supporting the main shaft (1) swinging back and forth around the axis (11).

An oscillatory drive is specified, having a housing in which there are accommodated a drive motor for driving a motor shaft in rotation and a tool spindle, and a first coupling drive mechanism which is coupled to the motor shaft and to the tool spindle for the purpose of driving the tool spindle in oscillatory fashion about its longitudinal axis, wherein a second coupling drive mechanism is coupled to the tool spindle such that the tool spindle performs a superposed movement composed of a rotary oscillating movement and a movement directed perpendicular to its longitudinal axis.

An oscillating power tool with an electric motor is provided, including an armature shaft with an armature and a fan wheel, including an eccentric arranged on the armature shaft at one end thereof, a first balancing mass for balancing an unbalance of the eccentric and possibly an eccentric bearing, being arranged in the proximity of the eccentric or the eccentric bearing, respectively, however, at an axial distance, further including a second balancing mass for balancing a couple unbalance caused by the axial distance between the eccentric and the eccentric bearing, respectively, and the first balancing weight, wherein the second balancing mass is arranged on the armature shaft at the side facing away from the eccentric or the eccentric bearing. Also a method for balancing such an electric motor is provided.

The invention discloses a multifunctional quick assembly mounting hole for swing tools, comprising an assembly bottom plate, a bending transition segment, and a tool head connecting plate, wherein the bending transition segment is arranged between the assembly bottom plate and the tool head connecting plate; the bending transition segment is arranged obliquely, and the bending transition segment is in arc transition between the assembly bottom plate and the tool head connecting plate; the assembly bottom plate is provided with a first assembly positioning boss and a second quick assembly positioning boss. The invention relates to the technical field of electric tools, in particular to a multifunctional quick assembly mounting hole for swing tools with high practicability, simple structure, convenient carrying, quick assembly, wide application range, which is suitable for multiple machine connection modes.

An oscillating power tool has a housing including a handle portion defining a handle axis and a head portion defining an output axis that is perpendicular to the handle axis. The head portion includes a front face intersected by the handle axis. A drive mechanism includes an output shaft configured to oscillate about the output axis in a rotational manner in response receiving torque from a motor. A lighting assembly is configured to illuminate a workpiece in front of the head portion of the housing. The lighting assembly includes a lens arranged on the front face of the housing, a holder coupled to the lens, a plurality of printed circuit boards supported by the holder, and an LED arranged on each of the printed circuit boards. In response to being activated, the LEDs are configured to project a wide-angle beam of light through the lens.

A power tool includes a housing, a motor, a ball sleeve, an oscillating member with a mounting portion, and an output shaft rotating around an output shaft axis. The oscillating member and the ball sleeve are engaged in an engagement region on the oscillating member, and the geometric center of the engagement region is an engagement center. A first plane bisects the first bearing assembly along a direction of the output shaft axis, and a second plane bisects the second bearing assembly along the direction of the output shaft axis. The height from the engagement center to the first plane is a first height H1, the height from the engagement center to the second plane is a second height H2, and the ratio H1/H2 of the first height H1 to the second height H2 is greater than or equal to 0.5 and less than or equal to 1.4.

A reciprocating blade assembly for use with a surgical saw comprises a reciprocating member, the reciprocating member including a proximal end feature for engaging a drive member of the of the saw that, when actuated, reciprocates the reciprocating member. The reciprocating blade assembly further comprises teeth that extend outwardly from a side of the reciprocating member, the teeth adapted to form a kerf in tissue against which the teeth are pressed. The reciprocating member is contained in a guide bar assembly that includes features for engaging with a complementary fastening assembly that holds the guide bar assembly static to the saw and an opening located in a side of the guide bar assembly wherein the reciprocating member is mounted in the guide bar assembly so the teeth extend out of the side opening, wherein said guide bar assembly is dimensioned to fit into the kerf formed in the tissue cut by the teeth.

A circular jig apparatus to allow cutting or marking of large circular holes in sheets of material using a tool with a cutting blade or marking device is disclosed. This apparatus includes a system to hold the hold the tool in place, adjust the size or radius of the circular hole, and guide the cutting blade or marking device around in a circle on the sheet of material. In particular the cutting tool may be a vibrating blade. A system is also disclosed to match the curvature of the cutting blade to the arc or radius of the circle being cut. A system is also disclosed to provide a depth stop for the cutting blade. A system to hold a wide variety of marking or dispensing devices for use with the circular jig is also disclosed.

A surgical sagittal saw cartridge that includes a guide bar formed form an inner plate and opposed outer plates, the inner plate having a head. The cartridge has a blade that is disposed against the head of the inner plate. The inner plate is formed to have an inner tine and two opposed outer tines. The inner tine is formed to define the head against which the blade is disposed. The outer tines extend forward of the inner tine so as to define a space between the outer tines in which the blade is seated.