Abstract: The present invention relates to a method of removing blood from an extracorporeal blood circuit following termination of a blood treatment session, wherein blood is concurrently removed both from an arterial conduit portion and from a venous conduit portion of the extracorporeal blood circuit. It further relates to a method for recognizing and/or eliminating air inclusions in or from an extracorporeal blood circuit and a treatment apparatus as well as a tube system.

Abstract: A device (1) for a user to secure a workpiece (2) that is positioned on a substrate (3) during the processing of the workpiece (2) with a hand-held power tool. A stepping element (4) has a stepping surface (10) via which the user applies a holding force, and that also has a placement surface (11) for placing the device (1) onto the workpiece (2).

Abstract: A switch device is provided for a wall element, such as a door, flap, or window, in particular for a vehicle, having a first housing part, which is positionable or positioned in or on the wall element, having a second housing part, which is particularly disc-shaped or plate-shaped, having a sealing apparatus, which is positionable or positioned at least between the first housing part and the second housing part and fixes the first housing part and the second housing part on one another so they are movable relative to one another, and having a switch element, which is positionable or positioned between the first housing part and the second housing part and can be actuated by a movement of the second housing part relative to the first housing part.

Abstract: A device (1) for a user to secure a workpiece (2) that is positioned on a substrate (3) during the processing of the workpiece (2) with a hand-held power tool. A stepping element (4) has a stepping surface (10) via which the user applies a holding force, and that also has a placement surface (11) for placing the device (1) onto the workpiece (2).

Abstract: A device (1) for a user to secure a workpiece (2) that is positioned on a substrate (3) during the processing of the workpiece (2) with a hand-held power tool. A stepping element (4) has a stepping surface (10) via which the user applies a holding force, and that also has a placement surface (11) for placing the device (1) onto the workpiece (2).

Abstract: A vacuum cleaner having a housing (12), including a filter element (31) for separating out particles (13) that have been picked up and transported in an air stream (L) as well as a holding device for holding the filter element (31) in the housing (12). The filter element (31) has at least one projecting holding section (34). The holding device (41) has a contact surface and a holding surface between which the holding section (34) of the filter element (31) comes to rest when the filter element is in the installed state. The contact surface and the holding surface are each provided with a defined irregularity.

Abstract: A device (1) for a user to secure a workpiece (2) that is positioned on a substrate (3) during the processing of the workpiece (2) with a hand-held power tool. A stepping element (4) has a stepping surface (10) via which the user applies a holding force, and that also has a placement surface (11) for placing the device (1) onto the workpiece (2).

Abstract: A vacuum cleaner having a housing (12), including a filter element (31) for separating out particles (13) that have been picked up and transported in an air stream (L) as well as a holding device for holding the filter element (31) in the housing (12). The filter element (31) has at least one projecting holding section (34). The holding device (41) has a contact surface and a holding surface between which the holding section (34) of the filter element (31) comes to rest when the filter element is in the installed state. The contact surface and the holding surface are each provided with a defined irregularity.

Abstract: A switch device is provided for a wall element, such as a door, flap, or window, in particular for a vehicle, having a first housing part, which is positionable or positioned in or on the wall element, having a second housing part, which is particularly disc-shaped or plate-shaped, having a sealing apparatus, which is positionable or positioned at least between the first housing part and the second housing part and fixes the first housing part and the second housing part on one another so they are movable relative to one another, and having a switch element, which is positionable or positioned between the first housing part and the second housing part and can be actuated by a movement of the second housing part relative to the first housing part.

Abstract: A roof for a motor vehicle incorporating a roof channel has a cage with a slider guided therein in the vicinity of a retaining means for a roof rack. The slider can be displaced in the cage from a position closing the roof rack opening into a position exposing the roof rack opening. In addition, the cage holds a cover strip for the roof channel. The slider and the cage are made from a synthetic material and can be produced and installed in a particularly economical manner.

Abstract: A hand-held power tool has a drive spindle (2) rotatable about a rotational axis (A) and provided at its free end with a clamping flange (3) and a locking thread (4), a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between the clamping flange (3) of the drive spindle (2) and its clamping surface (6), and a safety spring (9) located between the disc-shaped tool (5) and an inner recess (8) formed in the clamping surface (6) of the locking nut (7), radially preloaded against the locking thread, and having at least one radial, outwardly projecting nose (10), with the disc-shaped tool (5) having at least one, opening radially inwardly and axially extending groove (11) associated with the at least one nose (10).

Abstract: A hand-held power tool includes a drive spindle (2) rotatable about a rotational axis (A) and provided at its free end with a clamping flange (3) and a locking thread (4) having at least one thread undercut (8), and a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between its clamping surface (6) and the clamping flange (3) of the drive spindle (2), with the thread undercut (8) having an axial length that corresponds to at least an axial length of an inner thread (9) of the locking nut (7).

Abstract: A hand-held power tool includes a drive spindle (2) rotatable about a rotational axis (A), a clamping flange (3) provided at a free end of the drive spindle (2) and having at least one inner thread (12) that in a mounted condition of the clamping flange (3) on the drive spindle (2), engages in a thread undercut (13) of the clamping flange (2), a locking pin likewise provided at the free end of the drive spindle (2) and having a locking thread (4), and a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between the clamping flange (3) and the clamping surface (6) of the locking nut (7), with the clamping flange (3) having in its axial region between the disc-shaped tool (5) and an inner recess (8) of the locking nut (7) in which the centering collar (9) of the clamping flange (3) can be partially received at least one radial, outwardly projecting nose (10), and with the disc-shaped tool (5) having at least one, opening radially inwardly and axially extending groove (11)

Abstract: A hand-held power tool includes a drive spindle (2) rotatable about a rotational axis (A), a clamping flange (3) provided at a free end of the drive spindle (2) and having at least one inner thread (12) that in a mounted condition of the clamping flange (3) on the drive spindle (2), engages in a thread undercut (13) of the clamping flange (2), a locking pin likewise provided at the free end of the drive spindle (2) and having a locking thread (4), and a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between the clamping flange (3) and the clamping surface (6) of the locking nut (7), with the clamping flange (3) having in its axial region between the disc-shaped tool (5) and an inner recess (8) of the locking nut (7) in which the centering collar (9) of the clamping flange (3) can be partially received at least one radial, outwardly projecting nose (10), and with the disc-shaped tool (5) having at least one, opening radially inwardly and axially extending groove (11)

Abstract: A hand-held power tool has a drive spindle (2) rotatable about a rotational axis (A) and provided at its free end with a clamping flange (3) and a locking thread (4), a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between the clamping flange (3) of the drive spindle (2) and its clamping surface (6), and a safety spring (9) located between the disc-shaped tool (5) and an inner recess (8) formed in the clamping surface (6) of the locking nut (7), radially preloaded against the locking thread, and having at least one radial, outwardly projecting nose (10), with the disc-shaped tool (5) having at least one, opening radially inwardly and axially extending groove (11) associated with the at least one nose (10).

Abstract: A roof for a motor vehicle incorporating a roof channel has a cage with a slider guided therein in the vicinity of a retaining means for a roof rack. The slider can be displaced in the cage from a position closing the roof rack opening into a position exposing the roof rack opening. In addition, the cage holds a cover strip for the roof channel. The slider and the cage are made from a synthetic material and can be produced and installed in a particularly economical manner.

Abstract: A hand-held power tool includes a drive spindle (2) rotatable about a rotational axis (A) and provided at its free end with a clamping flange (3) and a locking thread (4) having at least one thread undercut (8), and a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between its clamping surface (6) and the clamping flange (3) of the drive spindle (2), with the thread undercut (8) having an axial length that corresponds to at least an axial length of an inner thread (9) of the locking nut (7).

Abstract: A quick-connector for terminal fastening of a penetrating rebar (7) to a perpendicularly oriented concrete dowel (2), the connector comprising a wire clip (1) having a deflected segment of wire of the length (L) at least partially made of resilient-elastic metal, wherein the wire clip (1) includes, with respect to a primary turning arc (3), arms (5, 5′) that are mirror-symmetrical to an angle-bisecting plane (4), wherein each arm (5, 5′) forms a deflected secondary turning arc (6, 6′) transverse to the primary turning arc (3) and a clippable hook (8, 8′) that rests force-lockingly into a radial external surface zone (9), of a terminal radial expansion (1), of the concrete dowel (2).

Abstract: A concrete anchor bolt formed of an axially extending fixing member (1) having a first axially extending section (5) fixable in a tapped blind borehole (3) in a first solid body (4) secured by a temporarily fluid fixing agent (2) and an axially protruding second axially extending section (7) embeddable in a subsequently settable second solid body (6), wherein a conically shaped section sleeve (8) is present on the second section (7).

Abstract: The power supply to a load in a power supply circuit is controlled by a power supply switch which in turn is controlled by a control circuit and by a feedback signal representing a voltage drop across the load. The control circuit provides at its output a high level signal, a low level signal, and a high impedance signal level, whereby the high signal level initially closes the power supply switch, and the feedback signal normally keeps the power supply switch in its closed "ON-state" as long as said high impedance level prevails. The switch is caused to open and assume its "OFF-state" in response to a circuit fault as signified by said feedback signal or in response to said low level signal. A monitor detects the "ON" or "OFF" state of the switch under normal operating conditions and also the "OFF" state when a circuit fault such as a short occurred in the power supply circuit.