A self-aligning tool guide includes a mounting for fixing a hand-held machine tool, a lifting mechanism where the mounting is mounted on the lifting mechanism, and a self-balancing chassis that has two wheels on a wheel axle, a drive coupled with the two wheels, and a steering system. A lateral deflection of a center of gravity of the lifting mechanism relative to the wheel axle is detectable by a center of gravity sensor and the steering system is configured to control the drive to output a torque counteracting the lateral deflection. A self-balancing member is mounted on an upper portion of the self-aligning tool guide and the self-balancing member delivers an additional torque for balancing the self-aligning tool guide.

A self-aligning tool guide has a holder for securing a portable power tool for working on a ceiling, a lifting mechanism, and a self-balancing chassis. The holder is mounted on the lifting mechanism. The lifting mechanism has a propulsion system for raising the holder parallel to a lifting axis. The self-balancing chassis has two wheels on a wheel axis, a drive coupled to the two wheels, and a steering system. A contact sensor serves for detecting an indirect contact of the holder with the ceiling. The chassis has a brake. A controller has a mode in which the brake is activated and the balancing of the self-balancing chassis is deactivated.

A self-aligning tool guide has a holder for securing a portable power tool for working on a ceiling, a lifting mechanism, and a self-balancing chassis. The holder is mounted on the lifting mechanism. The lifting mechanism has a propulsion system for raising the holder parallel to a lifting axis. The self-balancing chassis has two wheels on a wheel axis and a drive coupled to the two wheels. A sensor serves for detecting a contact pressure of the holder, the contact pressure acting in the direction of gravitational force. The control station activates the propulsion system depending on the detected contact pressure.

A method and device to balance a tiltable arm comprising a free extremity and having a pivot point on a mounting structure which is supported by a floating object, by providing the arm with suspension and/or support means for controlling the arm's inclination with respect to the horizon, and by providing said suspension and/or support means with at least one spring, wherein the spring connects to the arm and to said mounting structure, and embodying the spring as a passive spring which is arranged to balance the arm so as to stabilize a position of a free extremity of the arm during movements of the floating object.

A hole-making system for making holes on the collar of a cylinder is provided. The hole making system includes a hand unit for making holes on the collar of the cylinder and the hand unit being configured to be used with two hands. The hole making system further includes a control unit configured to control operation of the hand unit. The hole making system further includes a pedal configured to enable a user to control the operation of the hand unit with a foot. The hand unit is held and controlled with two hands and a drilling command is provided by the pedal, allowing the user to control the hand unit in a more reliable manner.

In one aspect, the disclosure includes a monopod that comprises an elongated linear body that extends along a main axis between a top-end and a bottom-end, the body including a plurality of telescoping segments configured to allow the body to extend and contract along a length of the body by at least a second segment slidably residing within a first segment; one or more cavities defined by the body and configured to hold a fluid; and a fluid assembly that is configured to allow the fluid to pass from a fluid source and into the one or more cavities under the control of a fluid-control interface.

A counterbalance system employs one or more springs to support a large motor drill on an upper horizontal work surface, for example on the tops of drill jigs or bushings. The counterbalance system supports the drill above the work surface where the counterbalance system can slide across the work surface to selectively position the drill over a drill bushing through which a drilling operation is to be performed. A user of the drill supported on the counterbalance system can then push downwardly on the drill to compress the spring and perform a drilling operation. On removal of the downward directed force exerted by the user of the drill, the spring pushes the drill upwardly to disengage the drill from the work surface. The user of the counterbalance system can then slide the counterbalance system and the drill across the top of the work surface.

A balancer for tools includes a rotary drum for winding and unwinding a cable; a return spring, which is wound around the rotation axis of the drum and is coupled thereto, for the development of an elastic reaction that contrasts the unwinding of the cable and is adapted to facilitate its rewinding; an adjustment assembly for adjusting the preloading of the spring.

The adjustment assembly includes a fixed annular gear with an internal set of teeth; a circular ring with an external set of teeth, arranged inside the annular gear; and a plate which is arranged substantially coplanar inside the ring. In every angular position of the plate, the ring is kept pressed against the internal set of teeth for the transmission of motion from the plate to the ring and the consequent adjustment of the preloading of the spring.

An inline tool holder including a shaft collar, a mounting plate, a first enclosure, and a second enclosure. The mounting plate is concentrically arranged around the shaft collar and includes a first surface, a second surface, and an attachment mechanism. The first enclosure is removably coupled to the first surface of the mounting plate and the second enclosure is removably coupled to the second surface of the mounting plate. The attachment mechanism of the mounting plate extends radially beyond an outer edge of both the first enclosure and the second enclosure.

A tool guide has a holder, a lifting mechanism and a chassis. The holder is for fixing a portable power tool, and is mounted on the lifting mechanism. The lifting mechanism has a propulsion system for vertically raising the holder. The chassis has two wheels on a wheel axis, a drive which is coupled to the wheels, and a steering system. The lifting mechanism is rigidly mounted on the chassis. A center of gravity sensor is designed for detecting a lateral deflection x of the center of gravity G of the lifting mechanism in relation to the wheel axis. The steering system is designed to actuate the drive to output a torque which counteracts the deflection x. The lifting mechanism can be pivoted by means of a pivot drive. An inclination controller is designed to actuate the pivot drive in such a way that the inclination is minimized.