Abstract: An angular speed measuring device includes an oscillator for producing an excitation signal which induces mechanical vibrations in a rotating tuning fork, and an analog processing circuit for processing an electrical detection signal derived from the tuning fork. The analog processing circuit comprises a temperature-independent phase shifter responsive to the excitation signal for producing two signals in quadrature. The quadrature signals are applied to two multipliers which also receive the detection signal. The output signals from the multipliers are dependent on the fixed phase shift .phi. between the excitation signal and the detection signal, which is fixed for a given tuning fork, and on the variable phase shift .psi. which is a function of the rotational speed of the tuning fork, but the multiplier output signals are independent of temperature. After A/D conversion, the multiplier output signals are processed in a microprocessor to determine the angular speed.

Abstract: A sound generator comprises a transducer (3) intended to be supplied with a signal having a frequency determining the sound to be produced and having a variable amplitude (envelope). To this effect, the transducer is connected in series with the principal path of a semiconductor component (5). The control electrode of this semiconductor component (5) is connected to a RC-circuit (1, 7) capable of providing control pulse trains having said envelope.The RC-circuit comprises a capacitor (7) and at least one input branch (13) of a current mirror (11) the output branch (12) of which supplies a control electrode of the semiconductor component (5). Preferably, the capacitor (7) is connected in series with the input branch (13).Application in particular to wrist-watches equipped with an audible alarm.

Abstract: Compounds of the general formula I ##STR1## R and R.sub.1, which can be the same or different, are hydrogen or a C.sub.1 -C.sub.8 straight or branched alkyl group, R.sub.2 is hydrogen or the group OR.sub.4, wherein R.sub.4 is a C.sub.1 -C.sub.4 alkyl group,R.sub.3 is hydrogen, methyl or ethyl,X is oxygen or the NR.sub.5 group, wherein R.sub.5 is hydrogen or C.sub.1 -C.sub.18 straight or branched alkyl group n is the number 1 or 2,A, when n is 1, is a C.sub.1 -C.sub.20 straight or branched alkyl group, C.sub.6 -C.sub.12 cycloalkyl group, the group of formula (II), ##STR2## wherein R.sub.6 is hydrogen or methyl group or a group of formula (III) ##STR3## wherein R.sub.6 has the above meanings and R.sub.7 is C.sub.1 -C.sub.18 straight or branched alkyl group, phenyl, optionally substituted with a C.sub.1 -C.sub.4 straight or branched alkyl group, m can have the values from 0 to 4,A, when n is 2 is C.sub.2 -C.sub.12 alkylene or the group of formula (IV) ##STR4## wherein R.sub.8 and R.sub.

Abstract: A non-contacting shaft sealing device comprises an even number of dynamic pressure generating grooves arranged in the peripheral direction on a sealing end face of either the seal case side or the rotary shaft side. Each dynamic pressure generating groove comprises a shallow L-shaped groove of a specific groove width and depth and includes a fluid lead in part extending in the radial direction from a peripheral edge of the high pressure side of the sealing end face and a dynamic pressure generating part extending in the peripheral direction from the end portion thereof. Each groove is symmetrical with respect to one adjacent groove on one side thereof around a first sealing end face diametral line passing between adjacent fluid lead-in parts or symmetrical with respect to a second groove on the other side around a second sealing end face diametral line passing between the dynamic pressure generating grooves. The groove land ratio .theta..sub.1 /.theta..sub.2 in the peripheral direction is 0.5 to 0.

Abstract: A device for stretching carpets (11) to be laid on a plane floor (12) with nail ledges (14) in a vicinity of walls, without adhesives being used, includes a stretching head (22) which has spikes (25) and which is movable via a lever drive mechanism (20, 21) arranged on a base unit (17). A tensioning 1edge (28), which engages behind the nail ledge (14), and a hold-down element (31), which acts in an area of the surface of the nail ledge (14), are mounted for pivotal movement. The tensioning ledge (28) and the hold-down element (31) are each respectively mounted on a first and a second bracket member (27 and 30), and the two bracket members are arranged for pivotal movement about a joint fulcrum (19) on the base unit.

Abstract: The present invention relates to a glass fabric produced with zero-wist yarn, its use an the manufacture of printed circuits and in numerous other industrial applications, as well as to a process for the manufacture thereof.

Abstract: The present invention relates to a process for the preparation of crosslinked polymers and copolymers of acrylic acid and methacrylic acid of formula ##STR1## wherein R.sub.1 is hydrogen or methyl. Said process, using ethyl formate as solvent, allows to obtain polymers having low residue of monomer and of solvent and with higher thickening capacity.

Abstract: The watertight push button device is intended for example to equip a timepiece, in particular for controlling said timepiece. It comprises a body (2) inside which a cavity (4) of generally oblong shape is arranged, and a push button stem (6) arranged inside the cavity (4) and capable of moving, inside the latter, by a sliding movement when its head (8) is pushed.In order to prevent a shock at the end of the travel and/or an accidental activation of the push button, the device comprises pneumatic means intended to dampen the sliding movement of the stem (6) inside the body (2). These pneumatic means comprise an annular chamber defined around the stem (6) by a fixed gasket (28) and one of the sealing gaskets (20,22) mounted on the stem. Leakage means are preferably provided between the fixed gasket and the stem or the body.

Abstract: An assembly for temperature control of a fountain (dampening) fluid and/or selected rolls of a printing press, comprising a first open-circuit circulating system (U.sub.I) for supplying a fountain fluid application mechanism with a fountain fluid from a fountain fluid reservoir and a second closed-circuit circulating system (U.sub.II) for supplying a roll cooling mechanism with a cooling fluid. Each circulating system (U.sub.I, U.sub.II) is assigned a heat exchanger (3,4). The heat exchangers (3,4) receive refrigerant from a refrigeration mechanism having a power-switchable compressor (10) including a refrigerant return, thus enabling a refrigeration output to be adapted to demands in selectable operating modes "fountain-fluid cooling only", "cooling-fluid cooling only" or "fountain-fluid and cooling-fluid cooling".

Abstract: A gas tank evacuator (10) comprises: an evacuator housing (12) to be attached to a neck (44) of a gas tank (38); and an elongated valve-removal rod (14) movably mounted on, and passing through the evacuator housing, the valve-removal rod having a valve-engaging element (56) at a lower end thereof and a manipulation knob (54) member at a top end thereof for being manipulated to cause the valve-removal rod to engage and remove the overflow valve assembly. The evacuator housing has female threads (26) to be screwed onto male threads of the gas tank attachment neck with a stop (50, 56, 72) positioning the valve-removal rod aligned with the overflow valve assembly. When the evacuator housing is screwed to the gas tank attachment neck a fixed main valve actuator (46) on the evacuator housing opens a main valve (48) of the gas tank and residue gas in the tank is released to a sealed evacuation cavity (18).

Abstract: A composition for stabilizing synthetic polymers consisting of a blend ofa) at least a derivative of a high molecular weight polymethylpiperidine of formula (I) ##STR1## wherein the groups are as defined hereinafter, and b) at least one other HALS stabilizer wherein the groups are as defined hereinafter is disclosed. These compositions show photostabilizing and antioxidant properties.

Abstract: Alkyl and/or alkylphenyl poly(oxyalkylene)sorbate copolymers are described and the salts thereof useful as thickening agents for aqueous systems.

Abstract: The use of nor- and homo-bile acids derivatives as absorption enhancers for medicaments is described. Said derivatives show the advantage of improving the absorption of medicaments through mucosae without being metabolized by the intestinal flora, thus allowing a fast excretion. Moreover, the derivatives of the invention have a negligible toxicity.

Abstract: Tartronic acid acetalic ethers and esters of the general formula: ##STR1## are provided and are useful in treatment of bone dysmetabolism. As examples, Ra and Rb may be hydrogen, B is a C.sub.2 -C.sub.12 acyl group, R is phenyl and n is 0-12.

Abstract: The rolling mill includes upper and lower work rolls, a roll bending apparatus for applying a bending force to the upper and lower work rolls, a roll shifter for axially shifting the upper and lower work rolls in opposite directions, and a back-up roll for supporting the upper and lower work rolls. The upper and lower work rolls have a bus having a contour comprising first to fifth regions. The rolling mill is adapted to have the large changability of plate crown effected by the roll shifting on plates with narrow or intermediate widths. The use of a combination of roll shifting and roll bending causes contours of the upper and lower work rolls to overlap deflection of the upper and lower work rolls, resulting in that a smooth roll diameter profile across the width of the plate to be rolled where the upper and lower work rolls contact the plate.

Abstract: In an autotransformer of a single-phase three-wire system or a single-phase two-wire system, plural sets of main coils connected with input terminals are phase-wound on a single-phase core-type core, and further, between the ends of the main coils, plural sets of excitation coils mutually connected in series to wind on the single-phase core-type core are connected by plural combined connections. Further, plural sets of thyristors controlled ON/OFF by using the value measured by a voltage sensor connected to the aforementioned input terminals are provided between the aforementioned ends and the exciting coils. Therefore, the circuits are automatically changed in response to the increase and decrease of the input voltage, with a result that a load is not ill influenced so that the voltage value is always output within the predetermined range.

Abstract: A valve position controller (10) for controlling the position of an industrial-valve element (29, 29') includes a check valve (72, 74) in each of closing and opening pressurized-fluid input lines (68, 70) for respectively leading pressurized fluids from a pressurized source (30) to closing and opening solenoid actuating valves (106, 104) via a common input fork (62). The valve position controller can be changed between a fail-in-place" mode, and a "fail-closed" mode by interchanging input and exhaust lines (68, 88) to an opening actuating valve (64) and reversing electrical operation of a solenoid (104) of the opening actuating valve. A needle valve (94) in a common exhaust line allows speed of the system to be optimized for a set resolution.

Abstract: A process for the preparation of 2,2-dimethyl-5-(2,5-xylyloxy)-valeric acid, which process comprises the reaction of 2,5-dimethylphenol with a compound of formula (II), ##STR1## wherein R is an alkyl, aryl, arylalkyl group and --X is a halogen atom, and the subsequent hydrolysis to compound (I), characterized in that the reaction of compound (II) with 2,5-dimethylphenol is carried out in the absence of solvents and in the presence of an ammonium or quaternary phosphonium salt.

Abstract: A method and apparatus for the mutual repositioning of products (4), which products are fed at a specific speed and with a specific distance in between, and the mutual position of the products (4) being changed by means of speed influencing means (2, 3), while for the mutual repositioning of products (4) consisting of several layers, for adjusting the mutual position of graphic products in a packing apparatus, a speed influencing means (2, 3) is brought into engagement with the product both at the top side and at the bottom side of the product (4), which two speed influencing means (2, 3) are always driven at the same speed relative to each other.

Abstract: A contoured-part arrangement (10) at a wheel cut-out of a car, which extends along at least one third, preferably at least two thirds, of an edge (5) of the car body defining the wheel cut-out, protrudes outwardly, with an outer region (14) extending beyond the edge defining the wheel cut-out. The contoured-part arrangement is composed of strip-shaped sections (11, 12, 13) made from deformable material which are arranged with their adjacent ends overlapping one another and which have, in a direction of their longitudinal extension, a pre-formed curvature, a curvature center line being essentially parallel to a rotational axis of the associated wheel (1).