Abstract: An electric tool includes a drive unit for driving a tool unit in an operating state. A connection unit with at least one connection contact element transmits electrical energy from an energy supply device of the electric tool to the drive unit. A fan unit generates an air flow. A housing accommodates the drive unit, the connection unit, and the fan unit. A first air passage opening and a second air passage opening are formed on the housing. The first and second air passage openings are connected to one another with the fan unit via a duct for guiding the air flow along a flow direction. The duct is defined in sections by the connection unit and guides the air flow to dissipate heat generated at the connection unit from the housing while in the operating state. The electric tool is operable by a method.

Abstract: A handheld, portable work apparatus includes a housing defining an interior space, a drive motor arranged in the housing for driving a tool, a brake device assigned to the tool, a hand guard, and a switching unit which is arranged in the interior space of the housing for detecting the position of the brake device. The hand guard is arranged outside the housing and has an actuation contour for actuating the switching unit. The housing has an elastic element. The hand guard, the elastic element and the switching unit are arranged relative to one another such that the switching unit can be actuated by the elastic element being pushed in via the actuation contour of the hand guard.

Abstract: A housing part for a portable tool, in particular for a portable motor-driven electric tool, and/or for a power supply device of a portable electric tool, has a functional structure for absorbing an impact energy during a collision process. The functional structure has a contact section that is arranged and configured to directly absorb the impact energy and to carry out a deformation. The functional structure has a deformation zone that is arranged at the contact section and configured to receive a deformation of the contact section. The functional structure has a stop section that is arranged and configured to limit the deformation of the contact section and to transfer at least a part of the impact energy. A portable motor-driven electric tool can include at least one such housing part.

Abstract: A portable handheld work apparatus includes a tool, an electric motor, a battery as power source for the electric motor, and a housing with a battery shaft for receiving the battery. The battery shaft has a removal opening delimited by an edge. An end face of the battery is delimited in the direction radially with respect to the removal direction by an edge region. The edge of the removal opening projects beyond the edge region of the end face of the battery. The work apparatus has a normal state, wherein the battery is removable from the battery shaft through the removal opening. The work apparatus has a temporary impact state which can occur in an impact of the housing onto an impact surface. A capture element is arranged in the region of the edge of the removal opening and, in the normal state, permits a removal of the battery.

Abstract: A handheld, portable work apparatus includes a housing defining an interior space, a drive motor arranged in the housing for driving a tool, a brake device assigned to the tool, a hand guard, and a switching unit which is arranged in the interior space of the housing for detecting the position of the brake device. The hand guard is arranged outside the housing and has an actuation contour for actuating the switching unit. The housing has an elastic element. The hand guard, the elastic element and the switching unit are arranged relative to one another such that the switching unit can be actuated by the elastic element being pushed in via the actuation contour of the hand guard.

Abstract: A portable handheld work apparatus includes a tool, an electric motor, a battery as power source for the electric motor, and a housing with a battery shaft for receiving the battery. The battery shaft has a removal opening delimited by an edge. An end face of the battery is delimited in the direction radially with respect to the removal direction by an edge region. The edge of the removal opening projects beyond the edge region of the end face of the battery. The work apparatus has a normal state, wherein the battery is removable from the battery shaft through the removal opening. The work apparatus has a temporary impact state which can occur in an impact of the housing onto an impact surface. A capture element is arranged in the region of the edge of the removal opening and, in the normal state, permits a removal of the battery.

Abstract: A method for detecting tampering in a vehicle includes receiving first data of a first type in a central unit; receiving second data of a second type in the central unit, wherein the first type and the second type are different, and the first data and the second data relate to the operation of the vehicle; and checking the first data and the second data for mutual correspondence.

Abstract: In a method and apparatus for determining the circumference of a finger or toe joint, in particular a proximal interphalangeal joint, to be evaluated in the context of an arthritis examination of an examination subject, the joint is irradiated using a light source and at least one two-dimensional projection image is recorded using a camera apparatus. From the projection image, the diameter of the joint is determined by means of an automatic edge detection method, and the circumference is calculated on the basis of the diameter. Additionally, a diaphanoscopic examination of the joint can be made with the same apparatus, and the results combined with the diameter information to identify or monitor a degree or progress of the inflamation.