Abstract: An improved and more accurate method for evaluating and correcting total measurement signals (TS(n)) of measuring devices. The invention concerns a method for evaluating and correcting total measurement signals (TS(n)) of a measuring device, wherein measuring signals are transmitted in the direction of a medium and reflected on a surface of the medium as wanted echo signals or on a surface of a disturbing element as interference signals and received. In the case of a modification of at least one technical, process condition in the container and/or a modification of at least one technical, measurement condition of the measuring device, an independent reference curve is ascertained on the basis of a current static reference curve, wherein the interference signals are masked out of the raw echo curve on the basis of a masking algorithm, which applies the independent reference curve.

Abstract: A method for measuring a fill level (7) of a fill substance (1) in a container (3) and for monitoring at least one predetermined fill level (LMIN, LMAX), using a fill level measuring device (5) working according to the travel-time principle, as well as a corresponding fill level measuring device (5), wherein the monitoring satisfies high safety standards, wherein, in each measuring cycle, transmission signals (S) are sent toward the fill substance (1) and their echo signals (E) are received, the fill level (7) is determined, based on the echo signals (E), in a first evaluation method, and it is determined, based on the echo signals (E), in a second evaluation method independent of the first evaluation method, whether the fill level exceeds or falls beneath the predetermined fill levels (LMIN, LMAX).

Abstract: The invention relates to regulator T-cells containing galectins, in particular, the use thereof as markers and for the therapy and diagnosis of diseases, in particular, of allergies and autoimmune diseases, in particular rheumatoid arthritis, multiple sclerosis or Crohn's disease, chronic inflammation, asthma, immune deficiency diseases, AIDS, transplant rejection, cancer diseases and diabetes.

Abstract: A piston pump for brake systems employs a pulsation-smoothing device that functions especially well in the region of the outlet valve. As a result, substantially less noise occurs, and the durability of the piston pump is substantially better. The piston pump is used essentially in traction-controlled motor vehicle brake systems.

Abstract: A reliable method for measuring a fill level (7) of a fill substance (1) in a container (3) using a fill level measuring device (5) working according to the travel-time principle, wherein, periodically, transmission signals (S) are sent in the direction of the fill substance (1), their echo signals (E) are registered and converted into an echo function (A(t)), at least one echo characteristic of the echo function (A(t)) is determined and, on the basis of the echo characteristics of at least one preceding measurement, a prediction (P) is derived for the echo characteristics to be expected in the case of the current measurement, the echo characteristics of the current measurement are determined taking into consideration the prediction (P), and, on the basis of the echo characteristics, the current fill level (7) is determined.

Abstract: A fill level measuring device for measuring a fill level of a fill substance in a container and a method for fill level measurement using this fill level measuring device are provided. The fill level measuring device can perform fill level measurements upon re-start immediately on its own and reliably, and includes: at least one antenna, which issues transmitted signals (S) and receives echo signals (E); a signal processor, which serves for deriving from the received echo signals (E) an echo function containing the amplitudes (A) of the echo signals (E) as a function of travel time; a memory for storing data in a table whose columns serve for storing the echo functions in the columns in a sequence which corresponds to the fill levels associated with the individual echo functions; and an evaluation unit, which accesses the table for determining the fill level.

Abstract: A fill level measuring device for measuring a fill level of a fill substance in a container and a method for fill level measurement using this fill level measuring device are provided. The fill level measuring device can perform fill level measurements upon re-start immediately on its own and reliably, and includes: at least one antenna, which issues transmitted signals (S) and receives echo signals (E); a signal processor, which serves for deriving from the received echo signals (E) an echo function containing the amplitudes (A) of the echo signals (E) as a function of travel time; a memory for storing data in a table whose columns serve for storing the echo functions in the columns in a sequence which corresponds to the fill levels associated with the individual echo functions; and an evaluation unit, which accesses the table for determining the fill level.

Abstract: In piston pumps for brake systems used until now, there were often noise problems, from pressure pulsations.

Abstract: The invention relates to a roller bearing, in particular a needle bearing (38). The invention proposes embodying a bearing ring (42) of the needle bearing (38) with a lateral extension (46) with which the needle bearing (38) can be pressed into a bearing seat (48). This has the advantage that a compression of the bearing ring (42) by the bearing seat (48) takes place outside the region of the needles (40) of the needle bearing (38) and consequently, the compression of the bearing seat (48) does not influence a bearing play of the needle bearing (38). The needle bearing (38) is particularly provided for supporting a shaft (24) of a piston pump (16) of a pump unit (10), which shaft supports a cam (26).

Abstract: A reciprocating piston pump having a housing, pistons disposed opposite one another in the housing, an eccentric between the pistons, annular grooves that fit around the piston necks machined into piston ends oriented toward the eccentric, and a U-shaped hoop spring curved radially outside the eccentric in the circumferential direction thereof. The hoop spring includes forklike hoop spring ends which engage the annular grooves and press the piston ends toward the eccentric. In the circumferential direction of the substantially U-shaped hoop spring, a continuation is formed on the hoop spring and together with a stop disk aligned transversely to the eccentric shaft, forms a device that limits the pivotability of the hoop spring about the piston necks. The reciprocating piston pump is usable for instance in hydraulic motor vehicle brake systems and in other hydraulic equipment.

Abstract: An electrohydraulic unit having a hydraulic block with integrated valves, chambers, pumps and conduits, and electromagnets for the valves that are held on the hydraulic block. An electric motor for the pumps and relays for controlling the electromagnets and the electric motor. Electromagnets and relays are covered by a cover with connecting connectors for making an electrical contact. To make the design simple to manufacture and assemble, the cover is subdivided into a connector base and a covering hood that can be attached thereto. The connector base overlaps the electromagnets and the covering hood overlaps the relays, which are inserted into two connector receptacles disposed on the connector base and secured against axial displacement by the covering hood. The electrical connection of the electromagnets to the connectors and relays is effected via a flexible contact foil and a stamped screen embedded in the connector base.

Abstract: The invention relates to a check valve, for use as an insert check valve, with a valve seat and a valve element that is resiliently prestressed against the valve seat by a valve spring. According to the invention, a retaining element embodied as a retaining bracket is provided, which supports the end of the valve spring remote from the valve element and the retaining element can be locked resiliently to a recess, particularly an annular groove, of the valve housing. This enables fast, simple assembly of the check valve from its individual parts.

Abstract: A valve block assembly and an electronic control unit are separably joined to one another by means of a contact pin and contact sheath connection. The contact sheaths are disposed in a caplike insulating housing part of the valve block assembly. The contact sheaths are connected by flexible leads to connection contacts of the valves of the valve block assembly. This equalizes tolerances between the valves and the contact sheaths, on the one hand, and on the other thermally shields the control unit. The contact pins, anchored in the control unit, are connected to a stamped grid embedded in the control unit housing to the lead segments of which grid electronic components of the control unit are connected. These components are located on a ceramic support plate, which is joined to a heat conduction plate by adhesive bonding. The interior of the control unit housing is closed off by an outer wall serving as a protective covering.

Abstract: A housing block for a hydraulic braking system which accommodates inlet and outlet solenoid valves in such a way that a flow medium through the inlet and outlet valves is circulated in pairs in immediate succession The inlet solenoid valves are located lower in said housing block than the outlet solenoid valves so that the fluid can flow back to low pressure reservoirs, and air can flow upwards via the outlet solenoid valves to the wheel brake cylinders for the purpose of venting air from the system. The housing block is intended for a hydraulic braking system which is equipped with an anti locking device.

Abstract: A brake booster for a pressure-fluid-actuated, and in particular hydraulic, brake system equipped with both ABS and traction control has a servo piston that is controllable by a brake pedal, and an additional piston that is controllable via a magnetic valve assembly in traction control operation; to control a brake pressure in the brake system, both pistons act via a pressure rod upon the brake piston of a master brake cylinder. For the sake of a short structural length of the brake booster, the additional piston is embodied as an annular piston, which coaxially surrounds the pressure rod and is sealed off from it, and which rests on a radially protruding driver element of the pressure rod in order to displace it.

Abstract: A brake system with traction control, having a master brake cylinder for at least one brake circuit and having a brake booster is proposed. By operation of a pump, servo pressure is fed into the brake booster via a pressure connection provided on the brake booster, and the servo pressure reaches a pressure reservoir through a bore provided on the brake booster. From there, given a corresponding open passage position of magnetic valves, the servo pressure, via a supply line, reaches the pressure cylinder present in the brake booster, and in the pressure cylinder there is a valve slide that, via a servo piston, actuates a pressure rod leading to the master brake cylinder.

Abstract: A brake booster in which a servo piston is slidably supported in a housing. The transmission of a brake force is effected via a piston rod protruding into the housing, and a work chamber is formed between the piston rod and the servo piston. After the opening of a valve, this work chamber can be filled with brake fluid from a reservoir or supply container via a pump or the like. A return line also leads out of the work chamber back to the supply container, via a further valve. To improve the closing or sealing behavior of the valves, the first valve is to be embodied for admitting the brake fluid from a valve cone, or its shoulder, the valve cone extending axially in a blind bore of the servo piston, and a valve seat formed out of a valve bushing. The second valve is likewise embodied as a seat valve, and an element connected with the valve cone cooperates with an element connected with the piston rod.

Abstract: A brake booster having a brake valve disposed inside a booster piston, the brake valve comprises a valve bushing including a valve seat and a slide that is pressed by a spring against the valve seat of the valve bushing. The slide is supported with play at a great distance from the valve seat, so that it can be pivoted slightly around the vicinity of its bearing. The pivotability of the slide facilitates its centering in the valve seat, so that the valve closes dependably even in the presence of bearing tolerances or valve seat tolerances. Seals required for sealing off the slide have an elastic behavior, and are disposed in the vicinity of the bearing. As a result, reliable sealing is assured despite the pivotability of the slide.

Abstract: A brake valve for brake boosters in which a slide is guided in a sheath that is supported in rounded fashion at one end face, such that the slide, along with the sheath, is pivotable and can center itself, with a bezel formed onto its end face, in the valve seat of a valve bushing. The slide and valve bushing form a valve in which the closing behavior is improved considerably by the automatic centering of the slide in the valve seat.

Abstract: A brake booster in a housing, having a servo piston slidably supported in the housing and having a piston rod protruding into the housing for transmitting a brake force. A chamber is provided in the servo piston for receiving brake fluid drawn after the opening of a valve from a reservoir or supply container and pumped via a pump or the like. The chamber also communicates via a further valve or the like with a return line to the supply container. To improve the closing behavior of the valve, the first valve for the admission of the brake fluid is formed in the chamber, embodied as a servo chamber, by a valve bushing, or its annular collar, and a valve seat in a blind bore recess in the servo piston. On the other side, the valve bushing, with a bottom, engages the inside of a bell-shaped valve seat, which together with the piston rod, or a slide connected to the piston rod, forms the valve for returning the brake fluid.