Abstract: The invention relates to a pneumatically operated drill hammer, comprising a piston and a distributor axially arranged relative to each other in a housing, the piston being arranged to be moved axially between a first position and a second position. The drill hammer further includes a pneumatic drive system, including a drive chamber, a return chamber and a plurality of channels for distribution of drive gas in said drive system. The return chamber is arranged at a lower side of the piston and the drive chamber is arranged at an upper side of the piston, wherein the drive chamber is defined by a variable space enclosed by at least the housing, the piston and the distributor. The drive chamber includes at least one inlet port and at least one exhaust port arranged at a circumference of the drive chamber.

Abstract: The invention relates to a pneumatically operated drill hammer, comprising a piston and a distributor axially arranged relative to each other in a housing, the piston being arranged to be moved axially between a first position and a second position. The drill hammer further includes a pneumatic drive system, including a drive chamber, a return chamber and a plurality of channels for distribution of drive gas in said drive system. The return chamber is arranged at a lower side of the piston and the drive chamber is arranged at an upper side of the piston, wherein the drive chamber is defined by a variable space enclosed by at least the housing, the piston and the distributor. The drive chamber includes at least one inlet port and at least one exhaust port arranged at a circumference of the drive chamber.

Abstract: The disclosure relates to a blank (1) configured to be erected into a package (2), the blank (1) comprising a bottom panel (10), a first and a second side wall panel (21, 22), a first and a second end wall panel (31, 32), a first set and a second set of a first and a second end top wall panel (61, 62) configured to form a double walled top wall at each longitudinal end of the package (2), a third and a fourth locking tongue (73, 74) extending outwardly from the second side wall panel (22) and being configured to be received between the first and second end top wall panels (61, 62), a lid panel (80) being foldably connected to and extending outwardly from the second side wall panel (22), wherein the lid panel (80) is connected to the second side wall panel (22) along a longitudinal central portion positioned between the longitudinal end portions (22a, 22b) of the second side wall panel (22), as seen in a flat-laid state of the blank (1), The disclosure also relates to a package (2).

Abstract: An arrangement arranged to enclose a circuit board comprising electronic components is described. The arrangement comprises a structure designed to receive the circuit board and the electronic components, a housing designed to receive the structure, a cover designed to be connected to the housing, and an electric socket adapted to provide the circuit board with electricity. The electric socket is comprised in at least one of the housing or the cover. The arrangement is arranged to enclose the circuit board by the housing and the cover, wherein the structure is designed to be releasable and at least partly bear against the circuit board and the electronic components. A tool comprising an arrangement is also described.

Abstract: An arrangement arranged to enclose a circuit board comprising electronic components is described. The arrangement comprises a structure designed to receive the circuit board and the electronic components, a housing designed to receive the structure, a cover designed to be connected to the housing, and an electric socket adapted to provide the circuit board with electricity. The electric socket is comprised in at least one of the housing or the cover. The arrangement is arranged to enclose the circuit board by the housing and the cover, wherein the structure is designed to be releasable and at least partly bear against the circuit board and the electronic components. A tool comprising an arrangement is also described.

Abstract: An improved method and system of measuring the perceived speech quality in mobile telecommunications networks is disclosed herein. In an embodiment of the invention, the method uses both radio link parameters and an objective measuring technique performed on received signals to estimate the speech quality perceived by the end-user. A radio link processing stage extracts temporal information from a set of available radio link parameters such as the BER, FER, RxLev, handover statistics, soft information, and speech energy. Concurrently, a speech processing stage is used to process a sequence of original signals and received signals, obtained from the output of a telecommunications system. The signal sequences are processed by an objective measuring technique such as Perceptual Speech Quality Measure (PSQM). The outputs from the radio link processing and speech processing stages are utilized to calculate an estimate for speech quality.

Abstract: A method and system for measuring the speech quality in a mobile cellular telecommunications network using available radio link parameters is disclosed herein. In a preferred embodiment, the method includes receiving a set of radio link parameters, as defined in a standard or otherwise available, such as the BER, FER, RxLev, handover statistics, soft information, and speech energy. Temporal information is obtained from the radio link parameters to create a set of temporal parameters which can be statistically analyzed, for example, for the maximum and minimum, mean, standard deviation, and autocorrelation values for a time interval. The temporal parameters are combined to yield a set of correlated parameters that are more closely related to the speech quality. An estimator then uses the correlated parameters to calculate an estimate for the speech quality. The method of the present invention takes advantage of temporal information and correlated relationships from the transmitted parameters.