Wörz Patentanwälte PartG mbB

A method includes: initializing signal-processing parameters of the hearing aid at different frequencies based on attribute data and hearing characteristic data of a user, wherein the signal-processing parameters comprising a gain; processing a hearing test signal to be played based on initialized values of the gain, and obtaining a processed hearing test signal; playing the processed hearing test signal and determining a hearing test result of the user using the hearing aid; and in a case where the hearing test result indicates that the hearing aid does not meet a preset first hear-aiding requirement, adjusting values of the gain of the hearing aid at different frequencies based on the hearing test result, and continuously iterating a hearing test based on the adjusted values of the gain until the hearing aid meets the preset first hear-aiding requirement. A hearing aid is also provided.

The invention refers to a circular backing plate (10) adapted for use with a hand-held polishing or sanding power tool (100), comprising a main body (12) having a circular shape, a first attachment member (14) located on a top surface (16) of the backing plate (10) for releasable attachment of the backing plate (10) to a tool shaft (102) or to an eccentric element (104) of the power tool (100), a second attachment member (18) on a bottom surface (20) of the backing plate (10) for releasable attachment of a polishing or sanding member (22) to the backing plate (10) and internal channels (24) extending in the main body (12) and at least some of them exiting the main body (12) radially on an external circumferential surface (26) of the backing plate (10) with channel openings (28) located above the bottom surface (20) of the backing plate (10). It is suggested that at least some of the channel openings (28) merge into funnel-shaped outlet areas (30) towards the external circumferential surface (26) such that dimensions of the outlet areas (30) increase continuously starting from the channel openings (28) towards the external circumferential surface (26) with at least part of the outlet areas (30) at the external circumferential surface (26) being located closer to the bottom surface (20) of the backing plate (10) than the channel openings (28) of the internal channels (24).

The invention refers to a hand-held power tool (10) having a tool housing (16) and a quick-change working head (50) releasably attachable to a front part (16b) of the tool housing (16). The working head (50) comprises an axial input adapter (52) connectable to a tool shaft (18) of the power tool (10), an axial output adapter (54) connectable to a working element (12) of the power tool (10) and a transmission arrangement (56) with a specific transmission ratio (i), functionally located between the axial input adapter (52) and the axial output adapter (54) and making the axial output adapter (54) rotate at a given speed depending on the rotational speed of the axial input adapter (52) and the transmission ratio (i) of the transmission arrangement (56). It is suggested that the working head (50) comprises magnetic elements (58) and the front part (16b) of the tool housing (16) comprises respective magnetic elements (60). The magnetic elements (58) magnetically interact with the respective magnetic elements (60) once the working head (50) is close to the front part (16b) of the tool housing (16). The magnetic interaction between the magnetic elements (58) and the respective magnetic elements (60) ensures that the working head (50) is firmly held in respect to the front part (16b) of the tool housing (16) in an axial direction extending parallel to a rotational axis (30) of the axial input adapter (52).

A battery heating circuit (410), a battery heating system (400), and a battery assembly (510) are provided. The battery heating circuit (410) included an inductor module (110), a capacitor module (120), a first switch module (130), a second switch module (140), and a battery heating module (150). A control terminal of the first switch module (130) is configured to receive a first switch control signal (S1). A control terminal of the second switch module (140) is configured to receive a second switch control signal (S2). The first switch control signal (S1) or the second switch control signal (S2) is a pulse signal. Heating input power of the battery heating module (150) is controlled through the pulse signal and energy storage in the inductor module (110) and the capacitor module (120). Therefore, a power-controllable battery heating method may be implemented.

A focusing control method is performed by a focus-to-be-adjusted device. The focusing control method includes: during a current focusing process of the focus-to-be-adjusted device, obtaining (S110) current magnetic encoder data of the focus-to-be-adjusted device and a first focusing motor movement direction during a previous focusing process; determining (S120) target magnetic encoder data corresponding to the current focusing process, where the target magnetic encoder data represents magnetic encoder data, during the current focusing process, at which a projected image is in focus; and controlling (S130) the focus-to-be-adjusted device to perform focusing based on the current magnetic encoder data, the target magnetic encoder data, and the first focusing motor movement direction.

Die Erfindung betrifft eine Flügelanordnung (10) in der Form eines Propellers eines Flächenflugzeugs oder eines Tragschraubers oder in der Form eines Rotorblatts eines Haupt- und/oder Nebenrotors eines Flugzeugs mit Tragflächen, eines Hubschraubers oder eines Tragschraubers, oder in der Form eines Rotorblatts eines Rotors einer Windkraftanlage. Die Flügelanordnung (10) umfasst einen Hauptflügel (12) und einen entgegen einer Strömungsrichtung (22) vor dem Hauptflügel (12) daran befestigten Vorflügel (14), sodass zwischen dem Vorflügel (14) und dem Hauptflügel (12) ein Spalt (16) mit einem Strömungseinlass (18) und einem definierten, unveränderlichen Strömungsauslass (20) gebildet ist. In einem vertikalen Querschnitt längs der Strömungsrichtung (22) betrachtet beträgt eine Länge (D) eines sich entgegen der Strömungsrichtung (22) über eine Länge (A) des Hauptflügels (12) hinaus nach vorne erstreckenden Abschnitts (32) des Vorflügels (14) mindestens 20% einer Gesamtlänge (C) der Flügelanordnung (10) in Strömungsrichtung (22). Es wird vorgeschlagen, dass der Strömungseinlass (18) größer als der Strömungsauslass (20) ist, sodass sich durch eine Luftströmung (24) in dem Spalt (16) ein Bernoulli-Effekt einstellt.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …