An adjustable stroke mechanism has a housing with a central axis and a wall enclosing a cavity. At least one counterweight is movably disposed within the cavity. A mounting assembly is disposed within the cavity. The mounting assembly has a workpiece attachment mechanism. A stroke adjustor couples the at least one counterweight with the mounting assembly. The stroke adjustor enables the counterweight and mounting assembly to move with respect to one another such that a distance between the counterweight and the mounting assembly is variably adjusted which, in turn, variably adjusts a stroke radius of the workpiece attachment mechanism with respect to the central axis of the housing.

An adjustable stroke mechanism has a housing with a central axis and a wall enclosing a cavity. At least one counterweight is movably disposed within the cavity. A mounting assembly is disposed within the cavity. The mounting assembly has a workpiece attachment mechanism. A stroke adjustor couples the at least one counterweight with the mounting assembly. The stroke adjustor enables the counterweight and mounting assembly to move with respect to one another such that a distance between the counterweight and the mounting assembly is variably adjusted which, in turn, variably adjusts a stroke radius of the workpiece attachment mechanism with respect to the central axis of the housing.

An adjustable stroke mechanism has a housing with a central axis and a wall defining a cavity. At least one counterweight is movably disposed, at least partially, within the cavity. A mounting assembly is disposed, at least partially, within the cavity. The mounting assembly has a workpiece attachment mechanism. A stroke adjustor couples the at least one counterweight with the mounting assembly. The stroke adjustor enables the counterweight and mounting assembly to move with respect to one another such that a distance between the counterweight and the mounting assembly may be variably adjusted which, in turn, variably adjusts a stroke radius of the workpiece attachment mechanism with respect to the central axis of the housing.

It should be understood that, unless stated otherwise herein, any of the features, characteristics, alternatives or modifications described regarding a particular embodiment herein may also be applied, used, or incorporated with any other embodiment described herein. Also, the drawings herein are not drawn to scale. Although the invention has been described and illustrated with respect to exemplary embodiments thereof, the foregoing and various other additions and omissions may be made therein and thereto without departing from the spirit and scope of the present invention.

An electronic grinder powered by a smartphone has an electronics housing removably attached to a container section. The electronics housing has a motor and a microcontroller powered by a smartphone connected by a universal serial bus connector. The container section is sealed at the top by an openable, swivel-mounted cap. The motor has a blade that extends into the container section. The blade connected to the motor by a magnetic connection and the blade is configured to grind material disposed in the container section when the container section is closed.

The present invention relates to a floor surfacing machine (1) comprising a frame (2) that is carried by a first wheel (3) and a second wheel (4). The floor surfacing machine (1) further comprises a first motor (6), a handle arrangement (7), at least one planetary head (15) that is rotatably mounted to the frame (2) and at least one satellite surfacing head (19, 20, 21) that is rotatably mounted to the planetary head (15), where the first motor (6) is arranged to propel the planetary head (15). The floor surfacing machine (1) comprises a first control unit (10), and a remote control panel (11) which in turn comprises a second control unit (12) that is arranged to communicate with the first control unit (10). The floor surfacing machine (1) also comprises a second motor (22) that is arranged to propel the satellite surfacing heads (19, 20, 21) such that the planetary head (15) and the satellite surfacing heads (19, 20, 21) are independently operable.

A power tool that includes a tool body housing, a drive system, a tool head and a connection system. The drive system is housed in the tool body housing. The tool head, which is configured to perform work on a work piece, includes a tool head housing and an input member that is driven by the drive system when the tool head is coupled to the tool body housing. The tool head can be engaged to the tool body housing in at least two pre-defined and distinct orientations. The connection system secures the tool head to the tool body housing in each of the at least two pre-defined and distinct orientations.

A power tool that includes a tool body housing, a drive system, a tool head and a connection system. The drive system is housed in the tool body housing. The tool head, which is configured to perform work on a work piece, includes a tool head housing and an input member that is driven by the drive system when the tool head is coupled to the tool body housing. The tool head can be engaged to the tool body housing in at least two pre-defined and distinct orientations. The connection system secures the tool head to the tool body housing in each of the at least two pre-defined and distinct orientations.

An assembly for attachment of an accessory to a random-orbital sander is disclosed comprising a drive spindle, a support plate, one or more drive members located on and protruding from either of both of the drive spindle and/or the support plate, and one or more drive sockets corresponding to the one or more drive members. The one or more drive sockets are located on either or both of the drive spindle and/or the support plate. An attachment member adapted to protrude through an attachment aperture to fix the support plate and drive spindle against axial movement. One or more of the drive members seats within a corresponding drive socket to fix the drive spindle and support plate against relative rotational movement. One or more tuning members are positioned between the drive spindle and the support plate to space the support plate from the drive spindle a predetermined distance. A method of assembling a corresponding accessory to a random orbital sander and a method of balancing vibration in a random orbital sander by means of one or more tuning members are also disclosed.

An assembly for attachment of an accessory to a random-orbital sander is disclosed comprising a drive spindle, a support plate, one or more drive members located on and protruding from either of both of the drive spindle and/or the support plate, and one or more drive sockets corresponding to the one or more drive members. The one or more drive sockets are located on either or both of the drive spindle and/or the support plate. An attachment member adapted to protrude through an attachment aperture to fix the support plate and drive spindle against axial movement. One or more of the drive members seats within a corresponding drive socket to fix the drive spindle and support plate against relative rotational movement. One or more tuning members are positioned between the drive spindle and the support plate to space the support plate from the drive spindle a predetermined distance. A method of assembling a corresponding accessory to a random orbital sander and a method of balancing vibration in a random orbital sander by means of one or more tuning members are also disclosed.