Abstract: A gear drive system is provided having a first gear and a second gear. The second gear has a first peripheral portion and a second peripheral portion. A first set of gear teeth can be defined peripherally over the first peripheral portion and/or the second peripheral portion. The first peripheral portion and/or the second peripheral portion can be more resilient, resulting in a first backlash between the first set of gear teeth and the teeth of the first gear, less than a second backlash between the second set of gear teeth and the teeth of the first gear. Each gear tooth of the second gear can have a gear tooth spacing between adjacent gear teeth. The gear tooth spacing over the first peripheral portion and/or the second peripheral portion can be less than the gear tooth spacing at portions other than the first peripheral portion and/or the second peripheral portion.

Abstract: The invention relates to a connector (10) for a fluid conduction system comprising: —a female coupling part (12); —a male coupling part (14) for inserting into the female coupling part (12) along a longitudinal axis (16) of the connector (10); and —controlling means for locking/unlocking the inserted male coupling part (12) within the female coupling part (14) and for controlling the fluidic coupling of the two coupling parts (12, 14) by rotating said two coupling parts (12, 14) against one another about the longitudinal axis (16); wherein a portion of each of the coupling parts (12, 14) is realized as a shut-off valve (18, 24) with a valve body (20, 26) and a rotatable slider element (22, 28), wherein the rotatable slider element (22, 28) of each shut-off valve (18, 24) is in a compulsory closed position when the two coupling parts (12, 14) are unlocked; and wherein the rotatable slider element (22, 28) of each shut-off valve (18, 24) is transferable between the closed position and an open position only if t

Abstract: A diaphragm pump (10), in particular for use as a detergent dosage pump, comprises a pump housing (12) with at least a first check valve (14) and a second check valve (16), a fluid chamber (18), a diaphragm (20) defining a wall of the fluid chamber (18) and reciprocatingly movable, driving means (28) with a driving shaft (30) for reciprocating said diaphragm (20), a control unit (36), wherein the driving means (28) is connected to the diaphragm (20) by an eccentric (26) and a con rod (24), wherein the driving means (28) is configured as a gearless drive to directly reciprocate the diaphragm (20). The diaphragm pump (10) according to the invention offers increased cost efficiency and further it is possible to increase the dosing capabilities of the diaphragm pump (10).

Abstract: A gear drive system is provided having a first gear and a second gear. The second gear has a first peripheral portion and a second peripheral portion. A first set of gear teeth can be defined peripherally over the first peripheral portion and/or the second peripheral portion. The first peripheral portion and/or the second peripheral portion can be more resilient, resulting in a first backlash between the first set of gear teeth and the teeth of the first gear, less than a second backlash between the second set of gear teeth and the teeth of the first gear. Each gear tooth of the second gear can have a gear tooth spacing between adjacent gear teeth. The gear tooth spacing over the first peripheral portion and/or the second peripheral portion can be less than the gear tooth spacing at portions other than the first peripheral portion and/or the second peripheral portion.

Abstract: The invention relates to a connector (10) for a fluid conduction system comprising:—a female coupling part (12);—a male coupling part (14) for inserting into the female coupling part (12) along a longitudinal axis (16) of the connector (10); and—controlling means for locking/unlocking the inserted male coupling part (12) within the female coupling part (14) and for controlling the fluidic coupling of the two coupling parts (12, 14) by rotating said two coupling parts (12, 14) against one another about the longitudinal axis (16); wherein a portion of each of the coupling parts (12, 14) is realized as a shut-off valve (18, 24) with a valve body (20, 26) and a rotatable slider element (22, 28), wherein the rotatable slider element (22, 28) of each shut-off valve (18, 24) is in a compulsory closed position when the two coupling parts (12, 14) are unlocked; and wherein the rotatable slider element (22, 28) of each shut-off valve (18, 24) is transferable between the closed position and an open position only if the

Abstract: A short detection circuit is provided for detecting a short circuit condition of an LED. A voltage threshold is set which is dependent on the LED operating current, such that there are at least two different voltage thresholds at two different LED operating currents. This means false detections can be reduced and the LED current operating range can be increased over which the short detection functions.

Abstract: A short detection circuit is provided for detecting a short circuit condition of an LED. A voltage threshold is set which is dependent on the LED operating current, such that there are at least two different voltage thresholds at two different LED operating currents. This means false detections can be reduced and the LED current operating range can be increased over which the short detection functions.

Abstract: A diaphragm pump (10), in particular for use as a detergent dosage pump, comprises a pump housing (12) with at least a first check valve (14) and a second check valve (16), a fluid chamber (18), a diaphragm (20) defining a wall of the fluid chamber (18) and reciprocatingly movable, driving means (28) with a driving shaft (30) for reciprocating said diaphragm (20), a control unit (36), wherein the driving means (28) is connected to the diaphragm (20) by an eccentric (26) and a con rod (24), wherein the driving means (28) is configured as a gearless drive to directly reciprocate the diaphragm (20). The diaphragm pump (10) according to the invention offers increased cost efficiency and further it is possible to increase the dosing capabilities of the diaphragm pump (10).

Abstract: The invention relates on an oval gear meter for volume flow measurement comprising a housing with an oval gear chamber with a fluid inlet and a fluid outlet, a pair of oval gear wheels positioned in the chamber and together forming an intermeshing or non-intermeshing involute toothing, and a contactless magneto-reactive sensor means positioned outside of the chamber. At least one of the oval gear wheels is provided with at least one permanent magnet to form a trigger wheel. The sensor means is positioned in an appropriate position relative to the trigger wheel so that the sensor means is adapted to measure the rotation of the oval gear wheels by measuring the rotation of the trigger wheel. The trigger wheel is provided with a permanent magnet that generates a generally homogeneous magnetic field along one axis of symmetry of the trigger wheel so that the magnetic field is generally symmetrical relative to the rotational axis of the trigger wheel.

Abstract: The invention relates on an oval gear meter for volume flow measurement comprising a housing (1) with an oval gear chamber (2) with a fluid inlet (3) and a fluid outlet (4), a pair of oval gear wheels (5, 6) positioned in the chamber (2) and together forming an intermeshing or non-intermeshing involute toothing, and a contactless magneto-reactive sensor means (7) positioned outside of the chamber (2). At least one of the oval gear wheels (5, 6) is provided with at least one permanent magnet (9) to form a trigger wheel (6). The sensor means (7) is positioned in an appropriate position relative to the trigger wheel (6) so that the sensor means (7) is adapted to measure the rotation of the oval gear wheels (5, 6) by measuring the rotation of the trigger wheel (6).

Abstract: A computer card apparatus for interconnecting with and securely retaining a removable plug. The computer card's circuitry and components encapsuled within an insulating material, a sheet of metal superimposed over the insulating material and a plastic housing encompassing the sheet, insulating material, components and circuitry.

Abstract: The disclosure relates to novel dopamine derivatives of general Formula I ##STR1## wherein A is a substituted phenyl residue of the structure ##STR2## wherein R.sup.1 and R.sup.2, being identical or different, mean hydrogen, C.sub.1-15 -alkyl and allyl,D is ##STR3## R.sub.4 is hydrogen, C.sub.1 -C.sub.4 -alkyl, CF.sub.3, NH.sub.2 E is ##STR4## X is OH, NH.sub.2, ##STR5## and NH--SO.sub.2 --CF.sub.3, if Y=OH, Y is OH, NH.sub.2, ##STR6## NH--SO.sub.2 --CF.sub.3 and NH--SO.sub.2 --CH.sub.3, if X=OH, but wherein X and Y do not simultaneously mean OH, with R.sup.3 being C.sub.1-4 -alkyl, andZ is H or OH, and, if Z means the hydroxy group, the residue A can also be present in the tautomeric basic form,and their acid addition salts, their preparation, and use as medicinal agents having antihypertensive activity.

Abstract: Quinolonecarboxylic acid derivatives of the formula ##STR1## wherein the grouping ##STR2## is independently in the 6-, 7- or 8-position of each of the quinolone residues;m and n independently are each 1-4;R.sub.1 is hydrogen or alkyl of 1-6 carbon atoms;R.sub.2 is hyrogen, alkanoyl of 1-8 carbon atoms or benzoyl; andX is hydrogen, alkyl of 1-6 carbon atoms or the cation of a base which produces a physiologically acceptable salt with the quinolonecarboxylic acid,have valuable pharmacological properties.