Abstract: A gliding sports apparatus, which is preferably controllable by upper body and/or arms and/or hands and/or fingers, extends from a leading edge to a trailing edge in an intended direction of overflow when it is fastened to a user. The gliding sports apparatus comprises at least two shoulder ribs which extend substantially from the leading edge to the trailing edge, and wherein each of the shoulder ribs is connectable fixedly to an upper arm of the user but is rotatable about the axis of the upper arm, two hand ribs which extend substantially from the leading edge to the trailing edge, and wherein each of the hand ribs is connectable fixedly to a hand of the user, a back airfoil which is formed between the two shoulder ribs, and two arm airfoils, which are formed in each case between a shoulder rib and a hand rib.

Abstract: A gliding sports apparatus, which is preferably controllable by upper body and/or arms and/or hands and/or fingers, extends from a leading edge (40) to a trailing edge (41) in an intended direction of overflow when it is fastened to a user (30). The gliding sports apparatus (25, 25?) comprises at least two shoulder ribs (1) which extend substantially from the leading edge (40) to the trailing edge (41), and wherein each of the shoulder ribs (1) is connectable fixedly to an upper arm (34) of the user (30) but is rotatable about the axis of the upper arm, two hand ribs (3) which extend substantially from the leading edge (40) to the trailing edge (41), and wherein each of the hand ribs (3) is connectable fixedly to a hand (38) of the user (30), a back airfoil (8) which is formed between the two shoulder ribs (1), and two arm airfoils, which are formed in each case between a shoulder rib (1) and a hand rib (3).

Abstract: The invention relates to a self-tapping screw with a head and an outer thread support. The core cross-section of the outer thread support has the shape of a rounded n-sided polygon, n being a prime number>3.

Abstract: A part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14), which are connected by a rotationally symmetrical weld (16), wherein a main loading area (22) occurs in the vicinity of the weld (16), and only the weld (16) and the surroundings (22) thereof are strengthened by case hardening in the extreme fiber in such a way that case strengthening is present there, and a method for producing a part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14) by welding a rotationally symmetrical weld (16) between the two parts (12, 14), wherein after the parts (12, 14) are welded, the weld (16) and the surroundings (22) thereof are case hardened and the hardened zone (16, 22) is quenched immediately thereafter.

Abstract: The invention relates to a self-tapping screw with a head and an outer thread support. The core cross-section of the outer thread support has the shape of a rounded n-sided polygon, n being a prime number >3.

Abstract: The disclosure relates to a connecting assembly, more particularly for being used in the driveline of a motor vehicle. The connecting assembly comprises a housing and a driving gear. The housing comprises a first housing part with a first flange portion and a second housing part with a second flange portion. The driving gear comprises a receiving portion for receiving the housing and a supporting face which laterally delimits the receiving portion, wherein the first flange portion of the first housing part is axially arranged between the supporting face of the driving gear and the second flange portion of the second housing part, and wherein the second flange portion is welded to the driving gear. A method of producing a connecting assembly is also disclosed.

Abstract: A smoke alarm has a base element with a flat mounting surface, a light emitter that is attached to the mounting surface and that is configured to issue an illuminating light, and a light receiver that is attached to the mounting surface next to the light emitter and that is configured to receive a measurement light that results from a back-scattering of the illumination light at a measurement object located in a detection space. A data processing device is coupled to an output of the light receiver and configured to evaluate temporal changes of an output signal issued by the light receiver. Also, there is provided a method for checking the functional capability of the smoke alarm.

Abstract: The disclosure relates to a venting assembly for a unit with components running in a lubricant. The venting assembly comprises a housing part, a rotating component which, by a rolling contact bearing, is rotatably supported around an axis of rotation relative to the housing part, as well as a venting channel for venting the assembly, wherein an inner opening of the venting channel is arranged so as to axially adjoin the rolling contact bearing, and wherein, in an axial view, the opening of the venting channel at least partially covers the rolling contact bearing. Furthermore, the disclosure relates to a transmission assembly with such a venting assembly.

Abstract: The disclosure relates to a connecting assembly, more particularly for being used in the driveline of a motor vehicle. The connecting assembly comprises a housing and a driving gear. The housing comprises a first housing part with a first flange portion and a second housing part with a second flange portion. The driving gear comprises a receiving portion for receiving the housing and a supporting face which laterally delimits the receiving portion, wherein the first flange portion of the first housing part is axially arranged between the supporting face of the driving gear and the second flange portion of the second housing part, and wherein the second flange portion is welded to the driving gear. A method of producing a connecting assembly is also disclosed.

Abstract: The invention relates to a part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14), which are connected by a rotationally symmetrical weld (16), wherein a main loading area (22) occurs in the vicinity of the weld (16), and only the weld (16) and the surroundings (22) thereof are strengthened by case hardening in the extreme fiber in such a way that case strengthening is present there, and a method for producing a part (10) welded in a rotationally symmetrical manner and comprising two parts (12, 14) by welding a rotationally symmetrical weld (16) between the two parts (12, 14), wherein after the parts (12, 14) are welded, the weld (16) and the surroundings (22) thereof are case hardened and the hardened zone (16, 22) is quenched immediately thereafter.

Abstract: A flashlight for alarm systems includes a light source containing at least one light emitting diode and a circuit which controls said light source. The circuit has a feed supply, a current converter, and flash control device. The current converter, the light source, and the flash control device are connected in series. The current converter includes a control unit, an inductor, an induction stop, and a resistor which are connected in series. The flash control device includes at least one switch for actuating the light source and a microprocessor for controlling the at least one switch.

Abstract: A seat frame device for having at least two frame parts which are connected by way of at least one connection. At least one connection is formed at least partially of a pin connection, having at least one pin which is secured in the respective connection position by way of a safety connection.

Abstract: A seat frame device, in particular a seat frame device for means of transportation, having at least two frame parts which are connected by way of at least one glued joint, wherein at least one of the frame parts is at least part of a seat divider and/or set leg, having at least one adhesive surface.

Abstract: A flashlight for alarm systems includes a light source containing at least one light emitting diode and a circuit which controls said light source. The circuit has a feed supply, a current converter, and flash control device. The current converter, the light source, and the flash control device are connected in series. The current converter includes a control unit, an inductor, an induction stop, and a resistor which are connected in series. The flash control device includes at least one switch for actuating the light source and a microprocessor for controlling the at least one switch.

Abstract: A fire detector has at least two sensor units for monitoring a confined space for the occurrence of a fire. A first fire parameter is monitored according to the scattered light method, using a first sensor unit located at or in the vicinity of the ceiling. At least one second sensor unit of the fire detector, which emits at least two highly focused light beams towards the floor of the confined space, monitors a second fire parameter according to the extinction method.

Abstract: A method for differentiating between a fire and the manipulation of a fire detector. The fire detector has at least two sensor units, each of which contains a light source and a light collector. A cover plate is formed with at least two light exit and entry windows. The device is used to monitor at least one fire parameter in the area surrounding the fire detector according to a scattered light method. The respective light entry and exit windows on the cover plate are connected to an optical fiber element in such a way that light from the light source of one sensor unit is guided to and captured by the light collector of the other sensor unit.

Abstract: An axial setting device includes two discs which are centered on a common axis. One is axially supported and the other one is axially displaceable, and at least one is rotatingly drivable. The two discs on their end faces, each have a plurality of circumferential ball grooves. The ball grooves each comprise a depth which decreases in the same direction, and each pair of opposed ball grooves accommodates a ball. At least the ball grooves of one of the two discs, starting from the region of the greatest groove depth, comprise a first groove portion with a greater pitch and an adjoining second groove portion with a smaller pitch, wherein the first groove portion extends over a smaller circular-arch-shaped portion than the second groove portion.

Abstract: A friction coupling assembly includes: an actuator in the form of a ball ramp assembly, a plate package, and a ball bearing. The actuator has two coaxial discs, wherein the faces of the two discs each have ball grooves of increasing depth. Pairs of opposed ball grooves hold balls to axially support the two discs. The plate package is arranged coaxially relative to the discs and has outer plates for fixing to a coupling carrier and inner plates for fixing to a coupling hub. The ball bearing is for axially supporting the at least one rotatingly drivable disc, wherein a first bearing race of the ball bearing is integrally formed with the at least one rotatingly drivable disc.

Abstract: An assembly for measuring force at a friction coupling, more particularly in the driveline of a motor vehicle. The assembly includes an outer plate carrier (6) at which outer plates (7) are held so as to be rotationally secured and in a way so as to be axially displaceable, wherein at least one of the outer plates (7) comprises an outer cam (12); an inner plate carrier (8) at which inner plates (9) are held in a rotationally fast way and in a way so as to be axially displaceable; wherein the outer plates (7) and the inner plates (9) are arranged so as to alternate in the axial direction, while jointly forming a plate package (10); a force measuring device arranged in such a way that, upon actuation of the friction coupling (3), it is loaded by the cam (12) in an operating direction extending at a distance from, and transversely to, the longitudinal axis (A).

Abstract: A friction coupling assembly includes: a ball ramp assembly (2) with two coaxial discs (6, 7), wherein the faces (8, 9) of the two discs (6, 7) each have ball grooves (12, 13) of increasing depth, wherein pairs of opposed ball grooves hold balls to axially support the two discs (6, 7); a plate package (3) arranged coaxially relative to the discs (6, 7) and having outer plates (24) for fixing to a coupling carrier (40) and inner plates (25) for fixing to a coupling hub (56); and a plate spring (5) for introducing force into the plate package (3), the plate spring (5) is arranged coaxially relative to the discs (6, 7), is axially pretensioned and, functionally, is arranged in series with the plate package (3).