Abstract: A drive system (2) for moving a height adjustable tabletop (3) of a table (1) comprises a drive device (4) configured to the move the tabletop (3), a drive control device (5) configured to control the drive device (4), an acceleration sensor (6), and an evaluation unit (7). The acceleration sensor (6) is configured to synchronously follow a motion of the tabletop (3), to detect an acceleration of the sensor motion, and to transmit an acceleration signal corresponding to the sensor motion to the evaluation unit (7). The evaluation unit (7) is configured to evaluate the acceleration signal of the acceleration sensor, to determine a presence of a collision by means of acceleration values exceeding a threshold, and to output a collision signal to the drive control device (5) when the presence of a collision is determined.

Abstract: A lifting column (3) for a lifting system (2) of a furniture is provided. The lifting column (3) comprises at least two tube portions (4, 5) displaceable with respect to one another like a telescope, a high-voltage direct-current motor (6) and a transmission (7) for transforming a rotational motion into a linear motion, wherein the high-voltage direct-current motor (6) and the transmission (7) are arranged inside at least one of the at least two tube portions (4, 5) displaceable with respect to one another like a telescope.

Abstract: A tool lifting device has: arms connected to pivot relative to one another; and a load bearing pin secured to a first arm of the arms, the arms having a closed position where the load bearing pin is supported by, and spans a tool receiving gap defined between, the arms. A tool lifting device has: arms connected to pivot relative to one another; a load bearing pin supported by one or more of the arms, the arms having a closed position where the load bearing pin extends across a tool receiving gap defined between the arms; and a pivot lock for restricting the arms from pivoting relative to one another in the closed position.

Abstract: A tool lifting device has: arms connected to pivot relative to one another; and a load bearing pin secured to a first arm of the arms, the arms having a closed position where the load bearing pin is supported by, and spans a tool receiving gap defined between, the arms. A tool lifting device has: arms connected to pivot relative to one another; a load bearing pin supported by one or more of the arms, the arms having a closed position where the load bearing pin extends across a tool receiving gap defined between the arms; and a pivot lock for restricting the arms from pivoting relative to one another in the closed position.

Abstract: Described are methods and systems of providing directed interaction from one or more presenter devices to one or more participant devices. Directed interaction allows one or more presenters to change application state, device settings, or both on the participant devices. Within the constraints imposed by the presenter device, the participant devices may be able to change content presentation, position, and so forth. The participant devices may also generate participant status data, which may be provided to the presenter devices.