Abstract: A process for preparing 3(4),8(9)-bis(aminomethyl)tricycle-[5.2.1.02,6]decane by hydroformylating dicyclopentadiene with subsequent reductive amination wherein the hydroformylation of dicyclopentadiene is carried out in two stages, and, in a first hydroformylation stage, the reaction is effected in a heterogeneous reaction system using an aqueous solution of transition metal compounds, containing water-soluble organic phosphorus (III) compounds in complex-bound form, of group VIII of the Periodic Table to give 8(9)-formyltricyclo[5.2.1.02,6]dec-3-ene, and, in a second hydroformylation stage, the thus obtained 8(9)-formyltricyclo[5.2.1.02,6]dec-3-ene is converted, in a homogeneous organic phase in the presence of transition metal compounds of group VIII of the Periodic Table of the Elements to 3(4),8(9)-bisformyltricyclo[5.2.1.

Abstract: A pressure indicating apparatus is disclosed. The apparatus indicates pressure change in a device, the apparatus comprises: a pointer, optical sensing means, a planar element and indicating means. The pointer moves in response to the change in pressure, which in turn moves the planar element. Light from the optical sensing means is incident on the planar element. The planar element varies the incident light, which is picked up by a conversion means. The conversion means converts light energy to electrical energy that is used to illuminate LED from an array of LED's or activates any one LCD component from the array LCD's in the display provided in the indicating means to indicate pressure.

Abstract: A switchable drag lever (1) of a valve timing mechanism of an internal combustion engine having an outer lever (2), and inner lever (5) extending in the cut-out (3) of the said outer lever (2) between its side walls (4), the drag lever (1) having a rest (9) for a gas exchange valve on an underside (7) at one end (8) and a pivoting bearing (11) for supporting element at the other end (10) with the levers (2,5) extending at the end (8) on a common pin (12).

Abstract: The invention proposes a switchable cam follower (1) for a valve train of an internal combustion engine, said cam follower comprising two elements (2, 3) telescoped into each other and, axially displaceable relative to each other. A bore (4) comprising at least one piston (5) extends in the inner element (2). The piston (5) has, on a portion of its outer peripheral surface (7), a stepped entraining surface (8) that starts from the first front end (6) of the piston (5) facing the outer element (3). For achieving coupling, the piston (5) can be displaced with this entraining surface (8) onto a flat counter surface (10) of the other element (3). The entraining surface (8) of the piston (5) extends, starting from the first front end (6), toward a second front end (11) of the piston (5) while tapering into a conical shape generally in the direction toward a longitudinal axis of the piston (5).

Abstract: A process for isolating vinyl acetate from the gas mixture formed in the reaction of ethylene with acetic acid and oxygen in the gas phase over catalysts comprising palladium or palladium compounds, with recirculation of the acetic-acid solution obtained in the circulating gas scrubber to the first distillation column (predewatering column).

Abstract: The present invention relates to a process for preparing 3(4),8(9)-dihydroxymethyltricyclo[5.2.102.6]decane by hydrogenating the hyd roformylation products of d icyclopentad lene. The process comprises carrying out the hydrogenation in the presence of water, optionally after addition of water.

Abstract: In hydraulic valve last adjusters for the timing gear of an internal combustion engine comprising cylinder valve lift reversal or deactivation, said adjusters being loaded by cams of one or more camshafts while being made as a combination of switchable lash adjusters (22) and (non-switchable) standard lash adjusters, said adjusters further being configured as reverse-spring adjusters or free-ball adjusters, each adjuster comprising a control valve (32) whose closing body (41) is in the opening position during a base circle phase of the associated cam, according to the invention, the stroke of the closing body (41) of a switchable lash adjuster (22) is smaller in each case than the stroke of the closing body of a standard lash adjuster. This enables the idle strokes of the two different types of last adjusters to be adapted to each other.

Abstract: The invention proposes a linear guide unit comprising a guide carriage (1) that is mounted through rollers (3) for sliding on a guide rail (2), and further comprising a roller chain (8) comprising a cage (8a) for receiving the rollers (3), said cage being formed by spacers (16) arranged between adjacent rollers (3) and flexible belts (17) arranged at two front ends of the rollers (3) for connecting the spacers (16) to one another, said roller chain (8) being arranged for rotating in an endless roller channel (7) comprising a load-bearing section (10), in which the rollers (3) roll under load on raceways (4, 11) of the guide carriage (1) and of the guide rail (2), a return section (12), that is arranged substantially parallel to the load-bearing section (10) and in which the rollers (3) of the roller chain (8) are unloaded, and two deflecting sections (13) that connect the return section (12) and the load-bearing section (10) endlessly to each other, said endless roller channel (7) comprising lateral rims (14)

Abstract: Thiaxozle, oxazole, imidazole, isoxazole and isoxazoline compounds of the formula wherein Het is thiazole, oxazole, imidazole, isoxazole or isoxazoline, n is an integer from 0 to 6, A is selected from the various optionally substituted aromatic radicals defined in the specification, B is hydrogen, alkyl or phenyl, R1 and R2 are independently hydrogen, alkyl or cycloalkyl or R1 and R2 taken together with the carbon atom which carries them, form a carbocycle with 3 to 7 members and ? is —NH46R47 or —OR48, R46 and R47 are independently hydrogen, alkyl, cycloalkyl or —(CH2)kCOOR51, R51 is alkyl or haloalkyl and R48 is hydrogen or alkyl having advantageous pharmacological properties which allow their use in therapeutics, for treating neurodegenerative disorders or pain.

Abstract: The invention relates to new heterocyclic compounds of general formula (I), and their salts with a base or an acid: The invention also relates to a process for the preparation of these compounds, as well as their use as medicaments, in particular as anti-bacterial agents.

Abstract: A compound having a formula selected from the group consisting of wherein the substituents are as defined in the specification. The compounds are useful as intermediates in the preparation of compounds of formula (I), which are useful for inhibiting NO synthase and regenerate antioxidants.

Abstract: Compounds of the formula wherein the substituents are as defined in the application useful as antifungal agents.

Abstract: Ball screw, between the spindle nut (1) and threaded spindle (2) of which at least one ball chain (6, 8) formed from balls (9) rolls in each case along a ball channel (5) which is delimited by ball grooves (3, 4) formed on the spindle nut (1) and on the threaded spindle (2), the ball chain (6, 8) being deflected from one end of the ball channel (5) to a start of this ball channel (5) in deflection portions of the ball channel (5), one or more spring elements (11, 17, 27, 35) arranged in the ball chain (6, 8) between balls (9) of the ball chain (6, 8) exerting a pressure force on the balls (9) in the axis of the ball chain (6, 8).

Abstract: It is described an electrolysis cell wherein the anodic dissolution of metals is carried out, in particular of metals characterised by a relatively high oxidation potential, such as copper, or metals with high hydrogen overpotential, for example tin, aimed at restoring both the concentration of said metals, and the pH in galvanic baths used in electroplating processes with insoluble anodes. The cell of the invention comprises an anodic compartment, wherein the metal to be dissolved acts as a consumable anode, and a cathodic compartment, containing a cathode for hydrogen evolution, separated by a cation-exchange membrane. The coupling of the cell of the invention with the electroplating cell allows a strong simplification of the overall process and a sensible reduction in the relevant costs.

Abstract: The invention relates to a valve timing mechanism, in particular for four-cycle engines, having the following components: a rocker arm frame (2) which has two bars (34, 35) for accommodating rocker arms; hydraulic elements (6); a steel sheet part which is arranged between the hydraulic elements (6) and the rocker arm frame (2); a pressurized oil line; deep-drawn steel sheet rocker arms (1) which are configured uniformly, having a U-shaped cross section, a cylindrical roller, a cap (4) for a supporting ball (5) of the hydraulic element (6), and having contact elements for the valve stems of the inlet and outlet valves. According to the invention, the manufacturing costs of the steel sheet rocker arms are reduced by the fact that the outer pistons (9) of the hydraulic elements (6) are guided in blind bores (8) of the rocker arm frame (2), and by the fact that a steel disk (11) is arranged at the bottom of the blind bores (8) as a stop for the inner piston (10).

Abstract: The invention relates to a device (101) for altering the control times of gas exchange valves of an internal combustion engine, having a hydraulic actuating device (102) and a control valve (103). The device (101) according to the invention is provided with centre-position locking of a hydraulic actuating device (102). Furthermore, the device (101) according to the invention ensures that if an actuating unit (112) which governs the control valve (103) fails, the hydraulic actuating device (102) is locked in the central position and the locking is maintained until the actuating unit (112) is repaired. Furthermore, the device (101) according to the invention allows the internal combustion engine to be started in a locked position in a central position without a moveable element (105) of the hydraulic actuating device (102) striking a side wall of a pressure space (104) when the internal combustion engine is started.

Abstract: A sensor device for measuring frequency and amplitude of a varying force signal is provided. The sensor device comprises a sensing element defined by a plurality of even numbered planar segments symmetrically disposed about a central axis, a protective housing for housing, an interface element comprising a pick up member, a planar mechanical actuator, a transfer member adapted to receive varying signals from the pick up, amplify the signals picked up and transfer the amplified signals to the said mechanical actuator; and leads for transmitting said output signals outside the sensing device for processing.

Abstract: Process for the hydroformylation of olefins by linkage of the input parameters prevailing in the hydroformylation reaction to the target parameters of a hydroformylation reaction, wherein the linkage is achieved by means of at least one synthetic neuronal network.

Abstract: The invention proposes a valve train (1) of an internal combustion engine comprising a tappet (7) and a tappet pushrod (1) that is actuated by said tappet (7), said tappet pushrod (1) being at least partly hollow and comprising on one end (3), a first support (4) for a pressure piston (5) of a hydraulic lash adjuster (6) of said tappet (7) that follows a periodic driving element such as a cam. A second support (9) for a follower member (2) such as a rocker arm is arranged on a further end (8) of the tappet pushrod (1). The first support (4) comprises a passage (10) for hydraulic medium that can be routed out of the pressure piston (5) during operation of the internal combustion engine into an interior (11) of the tappet pushrod (1), a one-way valve means (12) being installed in the tappet pushrod (1) for retaining a hydraulic medium column during a standstill of the internal combustion engine.

Abstract: The invention proposes a deactivating element (1) for a valve train of an internal combustion engine. The deactivating element (1) comprises a housing (2) and an inner element (4) that is axially displaceable in the bore (3) of the housing (2). According to the invention, the pistons (7) arranged in the inner element (4) for coupling into an annular groove (12) in the housing (2) possess two flattened regions (10, 15) arranged diametrically opposite each other in axial direction of the deactivating element (1). The height of the annular groove (12) is reduced by a measure of a height of the second, additional flattened region (15). Due to the reduction of height of the annular groove (12), its volume is also reduced. This results in advantages activation and deactivation times.