Abstract: A method for controlling the tire pressure in multiple axle vehicles whose wheels are equipped with pneumatic tires and speed sensors that supply an evaluation unit with signals indicative of the speed of the respective wheel, by (a) determining simultaneously the speed of a right-hand wheel and a left hand wheel mounted on a common axle; (b) determining the deviation between the two speeds; (c) reducing the deviation in speed by a correction value representative, during a cornering motion, of that component of the deviation n speed between the right-hand wheel and the left-hand wheel which is due to the cornering motion: and (d) indicating the corrected deviation in speed, or of a signal derived therefrom, at least when the correct deviation in speed exceeds a given threshold value.

Abstract: A device for monitoring and wirelessly signaling a pressure, or a change in pressure, in pneumatic tires on vehicles having a pressure sensor for measuring the pressure or the change in pressure; a transmitter for transmitting a signal derived from the measuring signal of the pressure sensor; a control circuit that activates the transmitter only from time to time; a battery (1) as current source; and a back-up capacitor connected in parallel to the battery. A controllable switching unit is provided by means of which the back-up capacitor can be connected in parallel to the battery from time to time for a limited period of time only.

Abstract: The invention relates to a plant and method for producing a biogas from different organic waste materials from household, agriculture, forestry, industry and commerce sectors (bioorganic residues) by anaerobic alkaline sludge digestion. The aim of said invention, in particular, is to substantially reduce a production and energy costs and, thereby a manpower cost for preparing bio-organic even difficult-to-degrade residues for converting a large quantity of substance amount into a methane-containing gas used as an energy source.

Abstract: A system for the monitoring and wireless signaling of a pressure or a change of pressure in pneumatic tires on vehicles, comprising wheel electronics that are disposed inside the pneumatic tire and are provided with a battery as a power source, with a pressure sensor for measuring the pressure or the change of pressure, with a RF-transmitter for transmitting a signal derived from the signal of the pressure sensor, and with a (first) receiver for receiving wireless interrogation signals and/or control signals, a (second) receiver which is arranged in or on the vehicle and which receives the signal derived from the signal of the pressure sensor, a device for signaling to the driver information relating to the pressure or change of pressure, and transmitters for emitting interrogation signals and/or control signals, the transmitters being disposed, respectively, individually near each running wheel and having a transmission frequency of less than 1 MHz.

Abstract: The invention describes a method for controlling the tire pressure in multipleaxle vehicles whose wheels are equipped with pneumatic tires and speed sensors that supply an evaluation unit with signals indicative of the speed of the respective wheel, by (a) determining simultaneously the speed of a right-hand wheel and of a left hand wheel mounted on a common axle; (b) determining the deviation between the two speeds; (c) reducing the deviation in speed by a correction value representative, during a cornering motion, of that component of the deviation in speed between the right-hand wheel and the left-hand wheel which is due to the cornering motion: and (d) indicating the corrected deviation in speed, or of a signal derived therefrom, at least when the corrected deviation in speed exceeds a given threshold value.

Abstract: A device for monitoring and wirelessly signaling a pressure, or a change in pressure, in pneumatic tires on vehicles having a pressure sensor for measuring the pressure or the change in pressure; a transmitter for transmitting a signal derived from the measuring signal of the pressure sensor; a control circuit that activates the transmitter only from time to time; a battery (1) as current source; and a back-up capacitor connected in parallel to the battery. A controllable switching unit is provided by means of which the back-up capacitor can be connected in parallel to the battery from time to time for a limited period of time only.

Abstract: The invention describes a method for operating a device for monitoring and wireless signalling a pressure or a pressure change in pneumatic tires of wheels on vehicles, the device being hereinafter referred to as wheel electronics, wherein the pressure prevailing in the pneumatic tire is measured and electric pressure signals are derived from such measurements, and an information signal containing information on the pressure or on a pressure change is transmitted, the information signal being intended to be received by a receiver provided in or on the vehicle, the wheel electronics being set by a first control signal, which is transmitted in wireless fashion from outside the wheel electronics, to a first mode of operation in which the prevailing pressure or a pressure change is measured and signalled in response to the receipt of an interrogation signal generated outside the wheel electronics and transmitted to the wheel electronics in wireless fashion, and, if the wheel electronics do not receive another int

Abstract: A system for the monitoring and wireless signaling of a pressure or a change of pressure in pneumatic tires on vehicles, comprising wheel electronics that are disposed inside the pneumatic tire and are provided with a battery as a power source, with a pressure sensor for measuring the pressure or the change of pressure, with a RF-transmitter for transmitting a signal derived from the signal of the pressure sensor, and with a (first) receiver for receiving wireless interrogation signals and/or control signals, a (second) receiver which is arranged in or on the vehicle and which receives the signal derived from the signal of the pressure sensor, a device for signaling to the driver information relating to the pressure or change of pressure, and transmitters for emitting interrogation signals and/or control signals, the transmitters being disposed, respectively, individually near each running wheel and having a transmission frequency of less than 1 MHz.

Abstract: The invention describes a method for operating a device for monitoring and wireless signalling a pressure or a pressure change in pneumatic tires of wheels on vehicles, the device being hereinafter referred to as wheel electronics, wherein the pressure prevailing in the pneumatic tire is measured and electric pressure signals are derived from such measurements, and an information signal containing information on the pressure or on a pressure change is transmitted, the information signal being intended to be received by a receiver provided in or on the vehicle, the wheel electronics being set by a first control signal, which is transmitted in wireless fashion from outside the wheel electronics, to a first mode of operation in which the prevailing pressure or a pressure change is measured and signalled in response to the receipt of an interrogation signal generated outside the wheel electronics and transmitted to the wheel electronics in wireless fashion, and, if the wheel electronics do not receive another int

Abstract: An arrangement for transmitting signals from a device (3) for monitoring the tire pressure in vehicle wheels (1), being arranged in the tire preferably as one module together with a valve, and comprising a pressure sensor arranged for measuring the tire pressure and generating an electric pressure signal, a control circuit, a battery as power source, and a transmitter with a sending antenna for transmitting the measured pressure signal as a radio-frequency (RF) signal under the control of the control circuit to a central evaluation and control unit (8), which is arranged in the vehicle (2) and which is connected to receiving antennas (4), to which individual wheels (1) or groups of wheels (1) of the vehicle (2) are allocated, via a RF receiver which comprises a demodulator and transforms the received RF signals to low-frequency (LF) signals.

Abstract: A method for allocating identifiers, that are contained in signals issued by transmitters arranged in a tire pressure monitoring system, to the positions of the wheels by transmitting the signals to a receiving and analysis circuit, which analyses the information, contained in the signal, wherein for differentiating between wheels on the right side of the vehicle and wheels on the left side of the vehicle, the sign of a translation acceleration b is determined for each running wheel, the sign of the variation of the centrifugal acceleration z occurring during the translation acceleration b is additionally determined and multiplied by the sign of the translation acceleration b determined for the respective wheel, and the differentiation between wheels on the right side of the vehicle and wheels on the left side of the vehicle is effected by comparing the products of the two signs determined for the wheels.

Abstract: A vehicle tire pressure monitoring system includes a pressure sensor, a transmitter, and a transmitting antenna at each of N wheels of the vehicle, and at least one receiving antenna attached to the vehicle, respectively allocated to each transmitting, antenna. The receiving, antenna is connected to an electronic receiving, and analysis system which determines whether a signal belongs to the local vehicle by allocating an identifier characterizing the individual wheel to its transmitter. Emitted signals contain the identifier and are forwarded to the central electronic receiving and analysis system, which records the signal intensities under the signal's identifier, compares the intensities, selects those N transmitter identifiers with the greatest intensities, then stores the N transmitter identifiers as belonging to the vehicle.

Abstract: A method for allocating transmitters and receiving antennas in tire pressure monitoring systems which consist of a pressure sensor, a transmitter, and a transmitting antenna at each wheel, of a receiving antenna respectively allocated to them on the body, and of an electronic receiving and analysis system connected thereto via cables. In this, an identifier characterizing the wheel is allocated to each transmitter, and the signals are forwarded to the central electronic receiving and analysis system.

Abstract: A method for operating devices on wheels having pneumatic tires to signal the tire pressure, i.e. the air pressure in the pneumatic tire, in which a pressure sensor measures the tire pressure at regular intervals, and an analysis circuit compares the tire pressure readings with a reference pressure and, in the event of deviations of the tire pressure reading from the reference pressure which exceed a threshold value .DELTA.p, transmits by radio, to an indicating device arranged separately from the wheel, a signal reporting the deviation, such that the device meets its energy needs from an electrical battery. Radio operation is discontinued as long as the pressure measured by the pressure sensor is below a preselected second pressure threshold, in particular a preselected absolute pressure value.

Abstract: A method of making a commutator ring (2) for a commutator, which is provided with a plurality of commutator segments (7) with connection lugs (10) and anchoring means (44) and which is cold-formed by reduction and gauging in a single manufacturing step of a forming apparatus from a blank (1) with preformed segmental grooves (6) and a flange (4) which can subsequently be made into connection lugs. The forming apparatus is provided with a single or multi-stage, single or multi-part die. The blank is pressed against the die by radially disposed slides (39, 59) of the apparatus which are adjacent each commutator segment (7) and connection lug (10). Finally, during retraction of the die from the blank, the anchoring means (44) are formed on the commutator segments by a gauging apparatus being drawn through the tubular blank to "mushroom" inner teeth of the blank and shape them to form dovetail shaped anchors in a commutator hub sleeve.

Abstract: To form a commutator segmental ring, an intermediate stage commutator ring (4) is formed from a flat strip (1) of commutator material which is bent into essentially cylindrical tubular shape to form a blank (2) having a gap or crack (3) adjacent the ends of the strip. The commutator ring, upon forming of the commutator, is severed into commutator segments. The gap or crack of the blank is aligned with a ridge or rib in a forming punch press to form a groove within the essentially cylindrical tubular blank (2) so that, when the intermediate stage commutator ring (4) is made, a cylindrical portion (5) already dimensioned for the intermediate segmental ring and a flange portion (6) are made, with a groove in alignment with the gap or crack obtained during cold-flowing of the metal in the press by the guidance afforded by the rib or ridge in the gap or crack of the cylindrical tubular blank.