Abstract: The invention proposes a switchable roller tappet (1) for transmitting a cam lift to a push rod. According to the invention, the inner and the outer rotation-preventing devices of the tappet are made as a single component (17). This component is arranged in a reception (13) of the inner element (4), which reception also serves to lodge a coupling means (24). A tappet (1) of this type can be economically manufactured.

Abstract: A hydraulic camshaft-adjusting device of the rotary piston type that includes of a drive gear (2) directly connected to a crankshaft and an impeller that is directly connected to a camshaft (3). The drive gear (2) has a cavity formed from a perimeter wall (5) and two side walls (5, 6) inside of which at least one hydraulic working chamber is formed from at least two boundary walls. The impeller has at least one radial vane (12) and each vane (12) divides one hydraulic work chamber into two hydraulic pressure chambers. The outer end (18) of each vane (12) of the impeller is pressed radially against the perimeter wall (5) of the drive gear (2) as a result of the force of a spring element (17) located at the inner end (15) of the vane.

Abstract: In a linear guide unit comprising a guide housing configured as a profiled girder having a bottom wall and a side wall, said bottom and side walls defining empty guide space and forming an angle of less than 180° with each other in cross-section, a guide rail fixed on one of the bottom wall and the side wall, said guide rail being partially surrounded by at least one sliding traveler supported thereon, and a carriage plate fixed on the traveler and projecting out of a longitudinal opening of the empty guide space, said carriage plate having a connecting surface for connection to a connecting structure that is to be moved in a longitudinal direction of the guide housing, for a further delimitation of the empty guide space, a cover sheet is detachably fixed on the side wall in an end region of the side wall opposing the bottom wall, the longitudinal opening for the carriage plate being arranged between a free end region of the cover sheet and the bottom wall.

Abstract: A switchable, hydraulic support element (1) requiring only a small design space is proposed. For achieving this, a bore (16) for a slide (23) is arranged laterally of a pressure piston (10) of a hydraulic clearance compensation element (11) in the inner element (7) and is configured as a pocket bore. This dispenses with the stacked arrangement of the bore in the inner element and the clearance compensation element on top of each other as seen in prior art. At the same time, the slide (23) is installed in a housing (19) that extends in the cylinder head (5).

Abstract: An engaging and disengaging support element is proposed, having a compression spring (21) constructed as a so-called “lost-motion spring” that concentrically surrounds an inner element (5) that can be uncoupled. Because of this construction, a considerable amount of construction space is gained in the axial direction. Preferably, the support element (1) is provided with a hydraulic play compensation element (9).

Abstract: The invention relates to a hydraulic camshaft adjusting device (1) of a rotary piston type that is disposed on a camshaft (3) mounted in the cylinder head (2) of an internal combustion engine and comprises a drive pinion (4) that is in driving relation with a crankshaft through a gearing (6), and a winged wheel (5) that is fixedly mounted on the camshaft (3). The drive pinion (4) is made up of a circumferential wall (7), a camshaft-distal side wall (8) and a camshaft-proximate side wall (9), which walls (7, 8, 9) together define a hollow space (10) in which at least one hydraulic working chamber is formed by at least two limiting walls (11). The winged wheel (5) comprises at least one wing (14), and each wing (14) divides a hydraulic working chamber into two hydraulic pressure chambers.

Abstract: The invention concerns a device for the angular adjustment of a camshaft relative to the crankshaft of an internal combustion engine, particularly a vane-type adjuster (1) comprising a stator (12) that is driven by the crankshaft preferably through a traction element and a drive pinion (11), and a vane rotor (18) that can be pressurized by pressure oil and is rotationally fixed to the camshaft while possessing a means, preferably an axially displaceable fixing pin (37) for effecting a releasable, rotational fixing of the vane rotor. The drawback of oil leakage in common vane-type adjusters is avoided by the fact that all components of the vane-type adjuster (1) that have contact with pressure oil are arranged in an oil-tight housing (2).

Abstract: A linear guide with a guide rail (25), on which a guide carriage (26) is supported for movement longitudinally, and with a drive to cause the longitudinal movement of the guide carriage (26), which is constructed as an electric motor with a motor component arranged on the guide rail (25) and a motor element arranged on the guide carriage (26). A distance-measuring system is allocated to the linear guide, which has a measuring strip and a measuring head (30) which is movable in relation to the measuring strip adjacent to the guide carriage (26) or the guide rail (25) extending parallel to the guide rail (25). The distance-measuring system is assigned an acceleration sensor operating with an eddy current sheet and an exciter block (28) partially surrounding it.

Abstract: An angular contact ball bearing is configured so that the inner bearing ring (6) comprises two spaced apart points of contact, B and C, and the outer bearing ring comprises one point of contact A, the point of contact C of the inner bearing ring (6) being formed only after a tilting of the inner bearing ring (6). Due to this third point of contact C, a tilting of the inner bearing ring is almost completely prevented.

Abstract: A plastic snap cage for radial ball bearings includes thin-walled cup-like pocket elements spaced about the circumference and connected with each other in one piece through ribs, thereby forming pockets that are open in the axial direction to receive the balls. The radially inwardly and/or the radially outwardly extending boundary edge of the pockets is rounded in accordance with a selected rounding radius R.

Abstract: A sieve filter (1) for fluid lines or conduits which are formed of an annular disk-like fluid inlet (3) and an annular disk-like fluid outlet (4) with a fine mesh filter element arranged there between that is braced by stiffening bars (5), and which has a bypass function when the filter element (6) is stopped up or with highly viscous fluid. The fluid inlet (3) of the sieve filter (1) is constructed with the bypass function in that it has a smaller outside diameter than the fluid outlet (4) and is sealed off by a pressure relief valve (7). When the filter element (6) is stopped up or with highly viscous fluid in the line, the fluid inlet (3) is cleared by opening the pressure relief valve (7) as a bypass, through which the fluid is conducted unfiltered to the fluid outlet (4) of the sieve filter (1).

Abstract: A sieve filter for fluid lines, especially for hydraulic pressure lines (2) in internal combustion engines which is formed of a hollow cylindrical main body (3) with a fluid inlet (4) and a fluid outlet (5), and of a fine mesh filter element (6) for through flow by fluid which has a bypass function as well when the filter element (6) is stopped up or with highly viscous fluid. The sieve filter (1) is biased by a spring element (7), and is insertable together with the spring element (7), between two axially spaced opposing surfaces (8, 9) inside the pressure line (2) such that its fluid inlet (4) and the spring element (7) are prestressed against the opposing surfaces (8, 9), whereby the main body (3) of the sieve filter (1) closes a bypass fluid channel passing the filter element (6) which is clearable through an axial displacement of the main body (3) against the force of the spring element (7) resulting from the rise of fluid pressure on the filter element.

Abstract: A tensioning device for traction device, particularly chains, comprises an element, particularly a tension shoe (1) that tensions the traction device. The tension shoe (1) is mounted on a pivot axle (2) for pivoting relative to a base element (3), and a spring element (4) acting between the tension shoe (1) and the base element (3) urges the tension shoe (1) against the traction device. To simplify the assembly of the tension shoe (1) and the base element (3), it is proposed that one of the elements (1, 3) comprises at least one mounting eye (6, 11) having a radial mounting aperture (7, 12) for radially receiving the pivot axle (2) arranged on the respective other element (1, 3).

Abstract: The inner casing (1) of a rollerbearing permitting longitudinal movement over a limited travel path and designed for longitudinally displaceable mounting or guiding of a rod (8) is provided with an inwardly directed projection (9) on each of at least two opposing lateral surfaces (1a, 1c).

Abstract: A valve timing control apparatus, includes a drive wheel in driving relation with the crankshaft and has a hollow space with at least one hydraulic working chamber demarcated by two boundary walls extending inwardly from an inner wall surface of the drive wheel. Mounted in fixed rotative engagement with the camshaft and fitted in the hollow space of the drive wheel is a rotatable impeller having at least one vane to subdivide the working chamber in two hydraulic pressure compartments. A seal, positioned between a free end face of the vane of the impeller and the inner wall surface of the drive wheel, fluidly seals the pressure compartments from one another and is formed by a roller-type sealing member spring-mounted in radial direction in an axial groove of the vane.

Abstract: A fully variable valve drive (10) for throttle-free load control of an internal combustion engine is proposed. It is particularly characteristic of the invention, that a transmission component (4) is provided for a valve activation component (13) that is produced with two distinguishable parts. The one includes a lever (4a) that communicates at one end with a cam (2), and on the other hand of a catch (4b). This catch (4b) is attached at an end (5) of the lever (4a) that is away from the cam (2) in a manner that allows for pivotable movement. The catch (4b) communicates with a contact range (15) of a rotatable adjustment mechanism (9) on the one hand. On the other hand, it works on the valve activation component (13) through a swing movement. This can be influenced by assignment of the location of the rest range (15) with reference to a target (12) of the handle (4b).

Abstract: A roller transmission, in particular toroidal transmission, with infinitely variable transmission ratio, includes a friction wheel (6) disposed between a driving disk (2) and driven disk (3) and rotatably mounted to a swingable carrier (7). The friction wheel has a circumferential friction surface (8) for interaction with confronting end faces (4, 5) of both disks (2, 3). The friction wheel (6) is made of two sheet metal parts (9, 10) interconnected outside the friction surface (8) and defining a partition plane which is disposed substantially transversely to the rotation axis of the friction wheel (6), wherein at least one cavity (15) is arranged between both sheet metal parts (9, 10).

Abstract: A device for changing the timing of valves in an internal combustion engine which includes a crankshaft-coupled component and a camshaft-coupled component is provided. The camshaft-coupled component is hydraulically rotatable and lockable with respect to the crankshaft-coupled component for relative rotation or hydraulic clamping of the camshaft (5) with respect to the crankshaft. Movement of hydraulic fluid to and from the device proceeds via a hydraulic-fluid adapter on the device's axial side facing away from the camshaft, against which adapter is additionally positioned an impulse-sending wheel for determining the camshaft position.

Abstract: A shift device for a change-speed gearbox, includes a shift rocker having sidewalls for axially displacing a shift sleeve positively connected to a gear wheel clutch or synchronizing unit. A shift finger is fixedly mounted on a shift shaft and positively engages a shift slot of the shift rocker to operate the shift rocker. The shift rocker is of single-piece configuration and made through a non-cutting process, with a blank being pre-punched from a steel sheet, before the blank is shaped into a finished product by at least one bending operation.

Abstract: This invention pertains to a vane-cell positioning device with an external rotor (1) driven by the crankshaft of an internal combustion engine and an internal rotor (2) fixed to and turning with a camshaft which has pivoting vanes (15) that fit inside vane mounting notches (16), said vanes being loaded with pressurized oil in hydraulic work spaces (31) of the external rotor (1). The danger of the pivoting vanes (15) lifting off of the radial sealing surfaces is eliminated by loading the bottoms of the pivoting vanes (15) with pressurized oil as the internal combustion engine is running.