Abstract: An accessory tool for an oscillating power tool includes a blade portion including a first lateral edge portion, a second lateral edge portion, and a leading edge portion, the leading edge portion defining a cutting edge. A reinforcement structure extends linearly across the blade portion from a first position located on the leading edge portion proximate the first lateral edge portion to a second position located on the second lateral edge portion and spaced apart from the leading edge portion. The reinforcement structure defines a cutting zone that encompasses a leading region of the blade portion between the reinforcement structure and the leading edge portion, the reinforcement structure being configured to increase a stiffness of the blade portion.

Abstract: An oscillating drive for a power tool includes a wobble shaft located on a drive shaft of a motor for a power tool, and a wobble member rotatably supported on the wobble shaft. The wobble member includes a wobble drive structure that defines a drive axis. A tool driver includes a tool drive structure at one end that is coupled to the wobble drive structure and a tool holder configured to releasably retain an accessory tool. Rotation of the drive shaft causes the wobble shaft to wobble about an axis of the drive shaft. The tool driver holds the wobble member against the rotation of the wobble shaft such that the wobble member wobbles without rotating which results in an oscillating motion of the drive axis of the wobble member in a plane that is parallel to the axis of the drive shaft. The oscillating motion of the drive axis causes the tool driver to oscillate.

Abstract: An oscillating power tool includes a drive motor (M) producing rotary motion and an oscillating mechanism (30) for converting the motor rotary motion to an oscillatory side-to-side movement. The oscillating mechanism (30) includes a link (32) driven by an eccentric shaft (16) of the motor (M), a drive arm (40) that drives the hub (45) of the working tool (B) in oscillating motion, and a bearing arrangement (37) between the drive arm (40) and the link (32) that isolates relative rotation and translation between the components while still imparting an oscillatory motion to the drive arm (40).

Abstract: A contour sanding accessory is provided for a power tool having a drive element capable of reciprocating or oscillatory motion. The accessory includes a mounting plate including a mounting portion configured for engagement to the drive element of the power tool, and a support portion connected to the mounting plate, the support portion defining a support surface. The accessory is further provided with two or more planar members sized to be stacked on the support surface and clamped onto the support portion of the mounting plate by a clamp assembly. The planar members are configured for relative sliding in a longitudinal direction so that the working edges of the planar members conform to the contour of the surface to be sanded. The clamp assembly is configured in a released position to allow the longitudinal movement and in a clamped position to clamp the accessory together for use in sanding the contoured surface.

Abstract: An accessory for a power tool includes a mounting portion configured to mate with an oscillating drive member of a power tool and a substantially planar guide portion extending forwardly of the mounting portion to a leading edge and defining a guide plane. A cantilever arm is located between the mounting portion and the leading edge. The cantilever arm extends downwardly from the guide plane and forwardly toward the leading edge. A plurality of teeth extends from a forward portion of the cantilever arm.

Abstract: An oscillating power tool includes a drive motor producing rotary motion and an oscillating mechanism for converting the motor rotary motion to an oscillatory side-to-side movement. The oscillating mechanism includes a fork having two arms and coupled to an output spindle and includes a bearing positioned between the two arms of the fork and coupled to the drive motor. The arrangement of the fork and the bearing isolate relative rotation and translation between the components of the tool while still imparting an oscillatory motion to the output spindle.

Abstract: A guide member for an oscillating power tool includes an attachment portion configured to be removably attached to a housing of the power tool and a guide portion that extends from the attachment portion. The guide portion includes a leading edge, a trailing edge, and a guide surface. When the attachment portion is attached to the housing of the power tool, the guide portion is configured to extend beyond the housing in a first direction to position the leading edge portion a predetermined distance apart from the oscillation axis, the predetermined distance being greater than a distance that an accessory tool attached to the power tool extends.

Abstract: A tool holding system for a rotary power tool is configured to clamp around a working tool when the working tool is inserted in the tool holding system. The tool holding system includes a sleeve having a frustroconical inner surface portion, a collet having frustoconical outer surface portion complementary to the inner surface portion, a spring mount operably connected to a motor for rotation by the motor, and a spring. The spring includes a first end portion operably connected to the collet to bias the collet toward a first position whereat the outer surface portion engages the inner surface portion, and a second end portion rotationally fixed with respect to the spring mount.

Abstract: An oscillating drive for a power tool includes a wobble shaft located on a drive shaft of a motor for a power tool, and a wobble member rotatably supported on the wobble shaft. The wobble member includes a wobble drive structure that defines a drive axis. A tool driver includes a tool drive structure at one end that is coupled to the wobble drive structure and a tool holder configured to releasably retain an accessory tool. Rotation of the drive shaft causes the wobble shaft to wobble about an axis of the drive shaft. The tool driver holds the wobble member against the rotation of the wobble shaft such that the wobble member wobbles without rotating which results in an oscillating motion of the drive axis of the wobble member in a plane that is parallel to the axis of the drive shaft. The oscillating motion of the drive axis causes the tool driver to oscillate.

Abstract: A dust extraction system for a power tool having a output shaft, a collet configured for engaging a tool bit and a collet nut engageable to the output shaft, comprises a base configured for mounting on the power tool, the base defining a cavity having an opening for passage of the output shaft therethrough and a discharge chute in communication with the cavity. The system further includes an impeller sized and configured to be rotatably received within the cavity, including a hub and a plurality of vanes emanating from the hub configured to draw dust from the workpiece into the cavity and to direct the dust through the discharge chute. A collet nut is integrated into the hub of the impeller so that the impeller can be directly mounted to the output shaft of the power tool while clamping the collet onto the tool bit.

Abstract: An accessory tool is configured to be coupled to a power tool having a tool drive structure. The accessory tool includes a spring component and has a first arm and a second arm attached to the spring component. The first arm includes (i) a first proximal end portion defining a first accessory drive structure that is configured to mate with a first portion of the tool drive structure, and (ii) a first distal end portion having a first holding structure. The second arm is spaced apart from the first arm and includes (i) a second proximal end portion defining a second accessory drive structure that is configured to mate with a second portion of the tool drive structure, and (ii) a second distal end portion having a second holding structure.

Abstract: An accessory tool for an oscillating power tool includes a mounting portion and a blade portion that extends from the mounting portion. The blade portion includes a first lateral edge portion, a second lateral edge portion, and a leading edge portion. A cutting edge is defined in the second lateral edge portion that includes a rearward facing portion that extends generally laterally from a distal end portion of the second lateral edge portion toward the first lateral edge portion and a forward facing cutting edge portion that extends from said second lateral edge portion toward said first lateral edge portion. The rearward facing cutting edge portion is at least partially interposed between the leading edge portion and the mounting portion, and the forward facing cutting edge portion is at least partially interposed between the rearward facing cutting edge portion and the mounting portion.

Abstract: A coping cut guide fixture includes a base supporting a trim piece with a contour feature oriented along a first axis, and a workpiece engagement arm configured to support the base on the workpiece with the first axis arranged in the direction of the coping cut. A first guide component is slidably mounted on the base for movement parallel to the first axis and a second guide component is slidably mounted on the first guide component for movement perpendicular to the first axis. The second guide component includes a tracing point at one end arranged to follow the contour feature of the trim piece and a tool mount at the opposite end configured to support the coping tool. The second guide component moves with the first guide component so that the coping tool carried by the tool mount follows the contour while making the coping cut.

Abstract: An accessory for a power tool includes a mounting portion configured to mate with an oscillating drive member of a power tool and a substantially planar guide portion extending forwardly of the mounting portion to a leading edge and defining a guide plane. A cantilever arm is located between the mounting portion and the leading edge. The cantilever arm extends downwardly from the guide plane and forwardly toward the leading edge. A plurality of teeth extends from a forward portion of the cantilever arm.

Abstract: An accessory tool is configured to be coupled to a power tool having a tool drive structure. The accessory tool includes a spring component and has a first arm and a second arm attached to the spring component. The first arm includes (i) a first proximal end portion defining a first accessory drive structure that is configured to mate with a first portion of the tool drive structure, and (ii) a first distal end portion having a first holding structure. The second arm is spaced apart from the first arm and includes (i) a second proximal end portion defining a second accessory drive structure that is configured to mate with a second portion of the tool drive structure, and (ii) a second distal end portion having a second holding structure.