Abstract: A helmet camera system (10) includes a helmet (11), a camera (12), a helmet holding device (13) fastened to the helmet and a camera holding device (14) fastened to the camera. The helmet holding device and the camera holding device are configured such that they can be connected to one another in non-positive and/or positive-locking manner for holding the camera at the helmet. The helmet holding device has a toothed ring (15) having internal teeth and the camera holding device has at least one toothed ring segment (16) having external teeth. The toothed ring segment can be positioned in the toothed ring for establishing the non-positive and/or positive-locking connection between the helmet holding device and the camera holding device. A fastening device, a helmet system as well as a camera system for a helmet camera system (10) are provided.

Abstract: A helmet camera system (10) includes a helmet (11), a camera (12), a helmet holding device (13) fastened to the helmet and a camera holding device (14) fastened to the camera. The helmet holding device and the camera holding device are configured such that they can be connected to one another in non-positive and/or positive-locking manner for holding the camera at the helmet. The helmet holding device has a toothed ring (15) having internal teeth and the camera holding device has at least one toothed ring segment (16) having external teeth. The toothed ring segment can be positioned in the toothed ring for establishing the non-positive and/or positive-locking connection between the helmet holding device and the camera holding device. A fastening device, a helmet system as well as a camera system for a helmet camera system (10) are provided.

Abstract: A housing interlock (90) for a power toothbrush (10) configured to improve the durability of the toothbrush and to simplify the assembly process. The housing interlock (90) provides for tolerance mitigation and shock protection, and also provides housing interlock tabs (95) such that the housing interlock can secure the components within the housing.

Abstract: A housing interlock (90) for a power toothbrush (10) configured to improve the durability of the toothbrush and to simplify the assembly process. The housing interlock (90) provides for tolerance mitigation and shock protection, and also provides housing interlock tabs (95) such that the housing interlock can secure the components within the housing.

Abstract: A covering device comprises a 1st cover which has a plurality of 1st slats interconnected in an articulated manner and a 2nd cover which has a plurality of 2nd slats interconnected in an articulated manner. The covers can each be adjusted between a rest position and a covering position, said covers facing each other with slat end faces when in the covering position. At least one of the 1st slats comprises a 1st engagement part on its end face facing the 2nd slats and at least one of the 2nd slats comprises a 2nd engagement part on its end face facing the 1st slats, said 1st engagement part being able to be brought to engage with the 2nd engagement part such that the first cover is connected to the 2nd cover.

Abstract: A method for the production and/or processing of a web-shaped material, particularly paper, with at least one measuring system which records m measurement values yik per measurement position over at least a portion of the width s of the web-shaped material at n different measurement positions within a fixed time interval ?t. The method is characterized in that the method includes determining a rational quality number Q, the value of which for a quality of the web-shaped material that is considered acceptable lies within an acceptance range which is to be empirically determined for the production process and which has a lower limit U and an upper limit O, where U and O are in each case rational numbers.

Abstract: A method for the production and/or processing of a web-shaped material, particularly paper, with at least one measuring system which records m measurement values yik per measurement position over at least a portion of the width s of the web-shaped material at n different measurement positions within a fixed time interval ?t. The method is characterized in that the method includes determining a rational quality number Q, the value of which for a quality of the web-shaped material that is considered acceptable lies within an acceptance range which is to be empirically determined for the production process and which has a lower limit U and an upper limit O, where U and O are in each case rational numbers.

Abstract: A covering device comprises a 1st cover which has a plurality of 1st slats interconnected in an articulated manner and a 2nd cover which has a plurality of 2nd slats interconnected in an articulated manner. The covers can each be adjusted between a rest position and a covering position, said covers facing each other with slat end faces when in the covering position. At least one of the 1st slats comprises a 1st engagement part on its end face facing the 2nd slats and at least one of the 2nd slats comprises a 2nd engagement part on its end face facing the 1st slats, said 1st engagement part being able to be brought to engage with the 2nd engagement part such that the first cover is connected to the 2nd cover.

Abstract: An accurate impedance measurement method for a power system transmission line is disclosed for improving various protection functions, i.e., distance protection and/or fault location estimation. The method is less sensitive to harmonics and other transient problems introduced to power systems by series capacitance and the like, and is easily incorporated into existing protective relays. In the method, a number (n) of current and voltage samples (Ik, Vk) representative of values of current and voltage waveforms are measured, respectively, at successive instants of time on a conductor in a power system. The number n is an integer greater than I and the index k takes on values of 1 to n. Resistance (R) and inductance (L) values are computed in accordance with an equation in which R and L are related to sums of differences in values of successive current and voltage samples. A prescribed power system function is then performed based on the computed R and L values.

Abstract: A reach-measurement method is used in connection with a series-compensated line of a power system. The series-compensated line includes an installed series capacitance having a bus side and a line side, and a non-linear protection device parallel to the installed series capacitance. The series-compensated line has a line current, a bus side voltage, and a line side voltage. The series capacitance and the non-linear protection device have a capacitance voltage thereacross equal to the bus side voltage minus the line side voltage. In the method, a number (n) of line current samples are measured, where such samples are representative of values of a line current waveform at successive instants of time on the series-compensated line. Capacitance voltage values are computed based on the measured line current samples in accordance with an equation which takes into account the non-linear protection device parallel to the installed series capacitance.