Abstract: The invention relates to a rescue terminal for providing access to an air filter in case of an emergency, including a control system configured and provided to be activated upon a detection of a case of an emergency and having: at least one signaling device configured and provided to emit a signal upon activation of the control system; and a communication unit configured and provided for at least one of receiving and transmitting information indicative for a case of an emergency. The rescue terminal further includes a receiving housing being configured and provided for receiving an air filter device. The invention further relates to an air filter device and a rescue system. The rescue terminal, the air filter device and the rescue system enable a user of the air filter device to quickly access the air filter device in case of an emergency.

Abstract: The invention relates to a rescue terminal for providing access to an air filter in case of an emergency, comprising a control system configured and provided to be activated upon a detection of a case of an emergency and having: at least one signaling device configured and provided to emit a signal upon activation of the control system; and a communication unit configured and provided for at least one of receiving and transmitting information indicative for a case of an emergency. The rescue terminal further comprises a receiving housing being configured and provided for receiving an air filter device. The invention further relates to an air filter device and a rescue system. The rescue terminal, the air filter device and the rescue system enable a user of the air filter device to quickly access the air filter device in case of an emergency.

Abstract: An insert for cell cultures has a hollow housing (1) of a cylinder-like shape, with an upper, in particular circular, opening (2) and a membrane-like base located opposite the opening (2). On the peripheral opening edge (6) outward protruding support arms (5) are spaced apart from one another. The housing (1) has on its outer peripheral surface (12), between at least two support arms (5), a flattened region (11) extending from the opening edge (6) in the direction of the base (3), so that in a plane perpendicular to the central longitudinal axis (Y) of the housing (1) in the region of the flattened region (11) there is a radial clearance of the peripheral surface (12) relative to the longitudinal axis (Y) which is smaller than the radial clearance and/or outer radius of the peripheral surface (12) in the non-flattened region of the peripheral surface (12).

Abstract: An insert for cell cultures has a hollow housing (1) of a cylinder-like shape, with an upper, in particular circular, opening (2) and a membrane-like base located opposite the opening (2). On the peripheral opening edge (6) outward protruding support arms (5) are spaced apart from one another. The housing (1) has on its outer peripheral surface (12), between at least two support arms (5), a flattened region (11) extending from the opening edge (6) in the direction of the base (3), so that in a plane perpendicular to the central longitudinal axis (Y) of the housing (1) in the region of the flattened region (11) there is a radial clearance of the peripheral surface (12) relative to the longitudinal axis (Y) which is smaller than the radial clearance and/or outer radius of the peripheral surface (12) in the non-flattened region of the peripheral surface (12).

Abstract: The invention relates to a screw (1) having a threaded shank (2) and a screw tip (6). The threaded shank (2) is composed of a shank core (10) and a thread which extends helically over the shank core (10). Two flanks (15, 16) which converge in an outer thread edge (14) has a height (H) measured radially from the shank core (10) to the thread edge (14). The thread (12) has a specific apex angle (?) formed between the adjacent flanks (15, 16). Preferably the outer thread edge (14) extends in a wave form in the radial direction with an amplitude (U) between wave crests (20) forming indentations (24) which interrupt the surface of the flank (15/16). At least one of the two flanks (15, 16) of the thread (12) is formed concavely in the region between the shank core (10) and the thread edge (14), seen in radial profile, in such a way that the apex angle (?) is less than a flank angle (?F). With preference, the thread (12) respectively has in the regions that are not interrupted by indentations (24).

Abstract: The invention relates to a screw (1) having a threaded shank (2) and a screw tip (6). The threaded shank (2) is composed of a shank core (10) and a thread which extends helically over the shank core (10). Two flanks (15, 16) which converge in an outer thread edge (14) has a height (H) measured radially from the shank core (10) to the thread edge (14). The thread (12) has a specific apex angle (?) formed between the adjacent flanks (15, 16). Preferably the outer thread edge (14) extends in a wave form in the radial direction with an amplitude (U) between wave crests (20) forming indentations (24) which interrupt the surface of the flank (15/16). At least one of the two flanks (15, 16) of the thread (12) is formed concavely in the region between the shank core (10) and the thread edge (14), seen in radial profile, in such a way that the apex angle (?) is less than a flank angle (?F). With preference, the thread (12) respectively has in the regions that are not interrupted by indentations (24).