Systems and methods are provided for configuring a sound system in a confined passageway. Techniques include installing a plurality of nodes with defined identities at intervals along a confined passageway. Each node includes a microphone and two loudspeakers directed in substantially opposite directions along the confined passageway. Communication is established between each of the nodes and a control system computer. In a first set of steps that is repeated, relative positions of all nodes communicating with the control system computer may be determined. In a second set of steps that is repeated, a distance may be computed for each pair of adjacent nodes of the plurality of nodes. The technique may then include storing the relative positions of all nodes and the computed distance between all adjacent nodes in the control system computer.

A thrust device for opening a door which can be assembled from a ready-to-assemble assembly of at least three parts by reversible attachment devices, which can be manually activated and deactivated, and able to maintain a rectilinear alignment of the lower and upper parts of the lower and upper support bars.

The invention relates to a portable, battery-powered hydraulic unit for hydraulic rescue tools, in particular for spreading or cutting tools, as well as a rescue tool equipped therewith. The hydraulic unit comprises at least one hydraulic pump, a hydraulic tank, a compensation device for hydraulic fluid, a manually operated hydraulic control valve, an electromechanical interface for on-demand coupling and decoupling of at least one battery pack, a mechanical-hydraulic interface for connecting a hydraulic tool, and an electric motor operable by the electrical energy of the battery pack for driving the hydraulic pump. The electric motor is formed by a disc motor whose axial length extending in parallel to the longitudinal axis of its output shaft is shorter than its outer diameter.

A portable tool, capable of being moved by persons, users and/or operators, includes a motor; a fluid reservoir; a pump connected to the reservoir and the motor; a work cylinder connected to an output of the pump; an actuable tool component connected to the work cylinder; a sensor in the recue tool connected to any one or more than one of the motor, the reservoir, the pump, the work cylinder, and the tool; a controller configured to receive measurement signals from the sensor; and at least one controlled valve in a hydraulic circuit defined by the reservoir, the pump and the work cylinder and connected to the controller. The controlled valve and the controller are configured to selectively at least substantially block or open any fluid channel in the hydraulic circuit. A pump of or for such a rescue tool.

A portable tool, such as a spreader tool, cutting tool or combination spreading/cutting tool is for mobile use. The tool has an electric motor, a rechargeable battery received on the tool, a mechanically or hydraulically driven, displaceable piston rod for performing spreading and/or cutting and/or lifting or pressing. An electronic control and regulation unit controls/regulates the electric motor, such as a brushless DC motor. The electronic control and regulation unit specifies a first operating mode in which the electric motor is operated at a first frequency, and a second operating mode in which the electric motor is operated at a second frequency. The operating mode is switchable by an operator of the tool using a manually operable switch between the first and the second operating modes. The rotational speed of a three-phase current electric motor is higher at the second frequency than at the first frequency.

The present invention relates to a tool, comprising at least one motor. Further comprising a pump connected to the motor, a work cylinder in fluid connection with the pump and an actuable tool component connected to the work cylinder, characterised in that the pump and the motor are arranged directly adjacent on a common singular motor and pump shaft, without any intervening coupling, transmission or the like.

Furthermore, the invention relates to an assembly of a motor and a pump on a common shaft.

A portable tool, capable of being moved by persons, users and/or operators, includes a motor; a fluid reservoir; a pump connected to the reservoir and the motor; a work cylinder connected to an output of the pump; an actuable tool component connected to the work cylinder; a sensor in the recue tool connected to any one or more than one of the motor, the reservoir, the pump, the work cylinder, and the tool; a controller configured to receive measurement signals from the sensor; and at least one controlled valve in a hydraulic circuit defined by the reservoir, the pump and the work cylinder and connected to the controller. The controlled valve and the controller are configured to selectively at least substantially block or open any fluid channel in the hydraulic circuit. A pump of or for such a rescue tool.

A portable tool capable of being moved by persons, users and/or operators includes a motor; an actuable tool component at least connectable to the work cylinder; an add-on from a group at least including an extension, a connection and a fork, configured to be placed on the tool; and a controller connected to the motor and configured to determine presence of the add-on on the tool to selectively increase or reduce motor force and/or speed, depending on detected presence or absence of the add-on.

A striking apparatus has a head composed of fore, mid, and aft portions with transition portions existing at the fore-mid and aft-mid junctions. The fore portion has a striking face the apex of which is a piecing edge. The striking face tapering into splitting edges away from the piercing edge. The fore portion having two sides on each of which a channel disposed for receiving the prongs of a provided tool. The longitudinal shoulders prevent the head from becoming embedded into a struck surface past the fore portion and act as fulcra for the user to more-easily retrieve the striking apparatus by lifting the striking apparatus handle.

A rescue device for assisting in removing an individual from a confined space comprises a sheet comprising a high-density polyethylene having first and second ends and a projection extending laterally outward from the first end and has a top edge, a bottom edge, a projection edge, and a securing element. The sheet has first and second through apertures inset from the second end and aligned with the projection. The sheet is rollable between an undeployed position wherein the sheet has a reduced diameter and a deployed position wherein the projection is passed through the first and second through apertures and partially secured by the securing element. In the deployed position, the securing element may abut the sheet and retain the device in the deployed position.