Abstract: The invention relates to a flow adjustment valve (1) comprising a valve housing (2) having a flow channel (3) and a pipe stub (10), disposed at an angle to the flow channel (3). A throttle unit (6) is arranged in the flow channel (3) and comprises a throttle element (8) that can be actuated through the pipe stub (10). The flow adjustment valve also comprises two measuring points (14, 15) for detecting the pressure in the flow channel (3) at both sides of a throttle arrangement, each of which measuring points being connected to a pressure measuring connection (17) via a pressure measuring channel (26, 27). The aim of the invention is to improve the design options for a flow adjustment valve of the aforementioned type. For this purpose, at least one pressure measuring channel (26) is guided through the pipe stub (10).

Abstract: The invention relates to a flow adjustment valve (1) comprising a valve housing (2) having a flow channel (3) in which a throttle unit (4, 11) having an adjustable throttle element (11) and a shut-off unit having a shut-off element (4) which blocks the flow channel (3) in a closed position are arranged, the shut-off element (4) being actuatable from the outside by means of a handle (16). The aim of the invention is to simplify the handling of a flow adjustment valve of the aforementioned type. For this purpose, the throttle element (11) can also be actuated by means of the handle (16).

Abstract: Method for reusing bituminous products (11), in particular bitumen containing roofing materials and membranes, wherein the bitumen containing products are placed in a second hopper (9), where a particulate material having a grain size between 5 mm and 35 mm is placed in a first hopper (5), and that in the bottom of the second hopper, conveyor means (10) urges the bituminous material into a mixing chamber (8), and that inside said mixing chamber a milling and/or crushing wheel (14) is arranged, which wheel engages and crushes/mills the material transported from the second hopper in an engagement zone, and at the same position as the wheel engages the bituminous material, the particulate material by means of a first conveyor (7) is fed into the engagement zone, and that the wheel's action will fragment the materials and at the same time mix the fragmented bituminous materials and the particulate materials, and transport the material past a sieve (15), where material having a particle size smaller than the sieve

Abstract: The invention relates to a flow adjustment valve (1) comprising a valve housing (2) having a flow channel (3) in which a throttle unit (4, 11) having an adjustable throttle element (11) and a shut-off unit having a shut-off element (4) which blocks the flow channel (3) in a closed position are arranged, the shut-off element (4) being actuatable from the outside by means of a handle (16). The aim of the invention is to simplify the handling of a flow adjustment valve of the aforementioned type. For this purpose, the throttle element (11) can also be actuated by means of the handle (16).

Abstract: The invention relates to a flow adjustment valve (1) comprising a valve housing (2) having a flow channel (3) and a pipe stub (10), disposed at an angle to the flow channel (3). A throttle unit (6) is arranged in the flow channel (3) and comprises a throttle element (8) that can be actuated through the pipe stub (10). The flow adjustment valve also comprises two measuring points (14, 15) for detecting the pressure in the flow channel (3) at both sides of a throttle arrangement, each of which measuring points being connected to a pressure measuring connection (17) via a pressure measuring channel (26, 27). The aim of the invention is to improve the design options for a flow adjustment valve of the aforementioned type. For this purpose, at least one pressure measuring channel (26) is guided through the pipe stub (10).

Abstract: Separating device, comprising a rotatable double walled separating drum, where a first wall of the drum constituting the inner drum (2) is arranged concentrically inside and space from a second wall constituting the outer drum (3) of the separating drum, and that a plurality of apertures are provided in said drum walls, where the apertures in the first wall have larger openings than the apertures in the second wall, and that the axis about which the drum rotates may be arranged at an inclined angle in relation to a horizontal plane.

Abstract: Method for reusing bituminous products (11), in particular bitumen containing roofing materials and membranes, wherein the bitumen containing products are placed in a second hopper (9), where a particulate material having a grain size between 5 mm and 35 mm is placed in a first hopper (5), and that in the bottom of the second hopper, conveyor means (10) urges the bituminous material into a mixing chamber (8), and that inside said mixing chamber a milling and/or crushing wheel (14) is arranged, which wheel engages and crushes/mills the material transported from the second hopper in an engagement zone, and at the same position as the wheel engages the bituminous material, the particulate material by means of a first conveyor (7) is fed into the engagement zone, and that the wheel's action will fragment the materials and at the same time mix the fragmented bituminous materials and the particulate materials, and transport the material past a sieve (15) , where material having a particle size smaller than the siev

Abstract: The invention relates to a communication device having at least two microphones, where in order to match the microphone performance in respect of the phase response a correction filter in the form of a IIR filter is implemented and where the amplitude of the transfer function for the correction filter is the inverse of the difference between the two microphone amplitudes.

Abstract: The invention regards a method for processing audio signals whereby an audio signal is captured, digitized and processed in the digital domain by a digital signal processing unit or DSP, and where a processed output signal from the digital signal processing unit is converted to the analog domain and served at a transducer for providing a sensation of sound. The DSP unit is provided with mean for performing at least two different digital algorithms which delivers each their processed signal having each their non identical time delay and further the most rewarding sound signal is chosen and served at the output transducer.

Abstract: The invention concerns a microphone with a membrane. The membrane has a first side which is in fluid contact with the surroundings and a second side which is facing a back chamber, where a barometric relief opening or vent opening is provided between the back chamber and the surroundings. According to the invention control means are provided for controlling the barometric relief opening.

Abstract: In the method according to the invention a signal processing unit receives signals from at least two microphones worn on the user's head, which are processed so as to distinguish as well as possible between the sound from the user's mouth and sounds originating from other sources. The distinction is based on the specific characteristics of the sound field produced by own voice, e.g. near-field effects (proximity, reactive intensity) or the symmetry of the mouth with respect to the user's head.

Abstract: The invention concerns a method for counteracting the occlusion effect of an electronic device delivering an audio signal to the ear, like a hearing aid or and active ear protector, where the electronic device comprises a transmission path with an external microphone or input line which receives a signal from the environment and a signal processor and a receiver which receives processes signal from the signal from the signal processor and delivers sound signals to the ear, whereby an ear piece is inserted into the ear canal and totally or partially blocks the canal. According to the invention the sound conditions in the cavity between the ear piece and the tympanic membrane are directly or indirectly determined, and whenever conditions leading to occlusion problems are determined, the transmission characteristic of the transmission path to the receiver changes in order to counteract the occlusion effect.

Abstract: Hearing aid with a microphone system for providing a directional response by generating a fixed forward pointing directivity pattern and a fixed backward pointing directivity pattern and where the forward and backward directivity pattern signals are mixed at a ratio, which ensures energy minimization of the output signal, and where the fixed directivity patterns are set for optimized directivity when the microphone system is located near or at an object.

Abstract: The invention concerns a hearing aid with at least one primary sound to electric converting transducer converting sounds in the environment into electrical signals and a signal processing unit for amplifying the electrical signal according to the needs of the user and an electrical to sound transducer for receiving the amplified electrical signal and delivering a sound signal to the ear wherein at least one further sound to electrical transducer is provided. The said further transducer has a sensitivity to wind noise which is smaller than the sensitivity to wind noise of the primary transducer and further the signal processing unit has means for detecting the level of wind noise in the signal from the primary sound to electric converting transducer. According to the invention also selecting means are provided for selecting the signal to be amplified from either the primary—or the at least one further sound to electrical transducer.