Abstract: An ambient air purifier includes a housing including at least a housing cover and a mounting base, wherein the housing has at least one flow inlet for ambient air to be purified and at least one flow outlet for cleaned air, a fan arranged within the housing, and at least one filter element. The at least one filter element includes at least one filter medium body, and at least a first lateral frame element is provided on at least an upper front end of the at least one filter medium body of the at least one filter element, having a larger cross section than the upper front end and protruding beyond the upper front end of the filter medium body with a protruding segment.

Abstract: A filter element for filtering air has a filter body with a folded filter medium provided with fold edges. A first side strip made of a fibrous material is provided, wherein the first side strip has a seal section, wherein the seal section seals the filter body at a first end face extending transversely to the fold edges of the filter medium, and wherein the first side strip has also a first tab projecting away from the seal section and extending in a direction of the fold edges. A circumferential seal engages around the first tab. An air filter is provided with such a filter element. A filter device provided with a flow channel permitting an air flow therethrough has such a filter element disposed therein, wherein the filter element extends perpendicularly to a direction of the air flow through the flow channel.

Abstract: A steam turbine has a single-shell turbine casing and specific inner casings arranged inside the turbine casing. The steam turbine has a turbine casing with an outer wall, a turbine shaft mounted rotatably about a turbine axis in the turbine casing, a first turbine part, and at least one second turbine part which is arranged downstream of the first turbine part in the axial direction of the turbine shaft, wherein the expansion direction for steam conducted through the steam turbine runs from the first turbine part to the second turbine part, wherein between the first turbine part and the second turbine part, a sealing shell is arranged on the turbine casing, in particular on the inner side of the outer wall for rotation therewith, the sealing shell being formed in a sealing manner with respect to the turbine shaft via sealing elements.

Abstract: A steam turbine has a single-shell turbine casing and specific inner casings arranged inside the turbine casing. The steam turbine has a turbine casing with an outer wall, a turbine shaft mounted rotatably about a turbine axis in the turbine casing, a first turbine part, and at least one second turbine part which is arranged downstream of the first turbine part in the axial direction of the turbine shaft, wherein the expansion direction for steam conducted through the steam turbine runs from the first turbine part to the second turbine part, wherein between the first turbine part and the second turbine part, a sealing shell is arranged on the turbine casing, in particular on the inner side of the outer wall for rotation therewith, the sealing shell being formed in a sealing manner with respect to the turbine shaft via sealing elements.

Abstract: A multiply indexable cutting insert for a drilling tool includes a body defined by two plane-parallel outside faces disposed perpendicular to an insert axis. Each outside face includes a plurality of edges defining a substantially triangular outer contour. Each edge includes a respective main cutting edge extending substantially over the entire length of the respective edge. The body has a rotational symmetry in respect of a 120° rotation about the insert axis and a rotational symmetry in respect of a 180° rotation transversely in relation to the insert axis.