Abstract: An ultrasonic welding device includes a sonotrode with a sonotrode surface, a lateral slide with a lateral slide surface, a touching element with a touching surface and an insertion chamber for inserting joining parts. The insertion chamber is defined in a first axial direction (y) on a first side by the sonotrode surface and in a second axial direction (x) on a second side by the lateral slide surface and on a third side opposing the second side by the touching surface. Furthermore, the ultrasonic welding device includes a first receiving element with a first stop edge and a second receiving element with a second stop edge. The first receiving element and the second receiving element are arranged to be movable in relation to each other between a starting position and an end position.

Abstract: A drive unit for electrically-operated vehicles. Two electromotors which can be electrically switched in series or in parallel, optionally, are used in the drive unit in order to obtain a high degree of efficiency and a high degree of overload protection for the batteries. The motors can also be controlled with pulse width modulation by means of an electronic control unit, which enables the current load of the batteries to be kept within stipulated limits. Other advantages of the invention lie in the better use that is made of the construction space, the lower production costs and the use of economical construction materials.

Abstract: A control device for controlling at least one adjustment member, in particular an electrical chain transfer of a bicycle, is proposed. The control device comprises a signal transmitter which is disposed at a location distant from the at least one adjustment member and which can be set by a user into a plurality of shift settings, in particular gears, for setting the at least one adjustment member into a plurality of operational positions, and at least one signal line for transmitting signals between the signal transmitter and the respective adjustment member.

Abstract: A displacement sensor for an actuating drive, particularly in a vehicle, having an actuating motor and an especially power takeoff member of the actuating drive, comprising a sensor housing having an axis, a drive member drivable by the actuating motor and rotatably supported coaxially to said sensor housing, an intermediate member, rotatably supported coaxially with respect to said drive member, which intermediate member engages the power take-off member and is connected to the drive member via at least one of an overload clutch and a return stroke clutch and a rotary displacement pick-up means, arranged in said sensor housing and adapted to detect the instantaneous rotary position of the intermediate member and to output a signal indicating this rotary position. This displacement sensor is distinguished by a compact, robust embodiment and high-precision displacement detection.

Abstract: An electrical adjustment device, in particular an electrical chain transfer device for bicycles is disclosed, comprising an adjusting element, a drive device for the adjusting element, a control unit for controlling the drive device and a presetting device connected with the control unit for presetting a plurality of set values, where each of these set values corresponds to an operational position of the adjusting element. In the adjustment device of the invention the adjusting element can be moved into respectively one set position corresponding to a desired operational position for fixing or, if required, correcting of the set values, and the resulting instantaneous value can be stored in the presetting device as the new set value.

Abstract: The electromagnetic braking arrangement comprises an exciting winding which is supplied from a generator winding which on the one hand excites the generator winding and on the other hand induces a braking torque in a short-circuited winding moved with the generator winding. The excitation current of the exciting winding is controlled by a transistor of a current-regulating circuit which holds the excitation current and thus the braking torque at a level adjustable at a reference voltage source. The iron circuit of the exciting winding has residual magnetic properties which ensure an initial self-excitation. The components of the control circuit are supplied with operating voltage from the generator winding via a rectifier circuit. A resistor, which is directly connected to the rectifier circuit, controls the transistor in the conductive state even when the operating voltage is insufficient for proper operation of the control circuit.

Abstract: The data display instrument for a bicycle comprises an LCD field having an analog scale field to display the momentary travelling speed and an analog scale field to display the pedalling speed. The scale fields are automatically switchable to two measuring ranges. Furthermore, two digital numerical fields are provided in which a multiplicity of information concerning the riding situation can be displayed in dependence on the travelling speed. In addition to the momentary speed and the momentary pedalling speed which are displayed in the scale fields, the digital fields will during travel display the distance travelled since a last reset and the average speed. Immediately after the bicycle comes to a standstill, the digital fields will indicate the travelling time since the last reset and the maximum speed. After a predetermined period of time has elapsed during which the bicycle continues to remain immobile, the digital fields will indicate the total distance travelled and the wheel diameter.

Abstract: An electronic instrument is mounted on a handlebar of a bicycle. An instrument carrier is fastened to the handlebar. The instrument itself is engageable with the instrument carrier for holding engagement. A signal receiver is fastened to one leg of a fork which carries a bicycle wheel. The receiver is opposite the bicycle wheel. A signal inducer is mounted on a spoke of the bicycle wheel. The signal inducer generates signals within the signal receiver. These signals are supplied from the signal receiver by a cable to the instrument carrier. The instrument carrier is provided with contacts. Complementary contacts are provided on the instrument. When the instrument is engaged with the instrument carrier the electrical contacts of the instrument carrier and of the instrument come in mutual electrical engagement. At least one of the contacts is provided on a silicon rubber block which is elastically deformable when the contacts of the instrument carrier and the instrument are brought in electric connection.

Abstract: The invention relates to a central locking installation having individual operating devices in each of which a push rod is longitudinally displaceable by means of a drive arrangement in the direction of a guide part formed by the housing of the operating device, while inhibitor means are provided for the inhibition of the displaceability of the push rod in one region of its displacement path. Thus without appreciable manufacturing expense it is achieved in the simplest manner that operating devices thus equipped can also be used at those locking points of a motor vehicle where merely in the manual pressing shut of this locking point a slight displacement of the push rod could occur which can result in unintended tripping of the microswitch and thus central locking of all locking points.

Abstract: A pulse frequency responsive switch includes a monoflop for receiving a pulse sequence. In response thereto, the monoflop generates a resulting square wave signal for application to an integration circuit and then a comparator. When the pulse rate of the pulse sequence exceeds the reciprocal of the relaxation time of the monoflop, the output therefrom assumes a steady D.C. voltage, which causes the comparator to generate an output signal for the pulse frequency responsive switch. This output signal is also used to lower the relaxation time of the monoflop, giving a hysteresis property to the pulse frequency responsive switch.

Abstract: An electromagnetic brake device for a sports training apparatus, especially an ergometer, includes a stator, and a rotor rotatable in relation to the stator about a rotation axis. The stator and the rotor each have multi-pole iron circuits which together form a magnetic flux circuit, one of the iron circuits having magnetic remanence properties. With the iron circuits, there are associated windings of which the winding allocated to the magnetically remanent iron circuit is formed as field winding and the other winding is formed as generator winding. The field winding is connected through a slip ring arrangement with the generator winding. With the iron circuit of the generator winding, there is associated a short-circuit winding. The size amplitude of the current fed to the field winding from the generator winding is adjustable by a control circuit. In this way, the electromagnetic brake moment of the brake device can be adjusted without wear.

Abstract: The central locking installation for motor vehicles comprises a plurality of electric bolt drives (1) and a time control system (17, 19) trippable by at least one manually actuatable control switch (21). In a first switch position of the control switch (21) the system switches on the bolt drives (1) for a first pre-determined time period in the locking direction and in a second switch position of the control switch (21) switches them on for a second pre-determined time period in the unlocking direction. For automatic overload prevention a capacitor (27) is provided which is charged through a charging current circuit (29, 31, 33) enabled by the time control system (17, 19) during the pre-determined first and/or second time period. A threshold stage (37, 41, 43, 45) which blocks the time control system (17, 19) on reaching of a pre-determined value of the capacitor voltage for the switching on of the bolt drives (1) in the locking and/or unlocking direction is connected to the capacitor.

Abstract: The central locking system for motor vehicles comprises a plurality of catch drives reversibly driving between a locking position and an unlocking position. The catch drives are switched on for a pre-determined time duration in the locking direction by drive signals of a first time control circuit. The catch drives are energized in the unlocking direction by a second time control circuit for a pre-determined time duration. The time control circuits can be triggered alternately through a triggering control switch actuatable by means of a door key from outside the vehicle, or by means of a press-button switch actuatable from within the motor vehicle. The trigger inputs of the time control circuits are connected through separate trigger paths to the press-button switch.

Abstract: The central locking installation for motor vehicle door locks blocks the locking element of the door lock by means of an additional, separately controllable blocking member. The locking element and the blocking member are driven by separate electrical drives which are connected into mutually parallel-connected current paths of one common drive current circuit. The drive direction of the two drives is controlled by common switches of a pole-changing circuit which reverses the current direction. Into the current path of the drives of the blocking member there is connected a control switch by way of which these drives can be switched on selectively. In the unlocking direction and the unblocking or releasing direction a time control system controllable by means of the door key in the unlocking of the door switches on the drives of the locking element and of the blocking member simultaneously. In the locking of the door lock only the drive of the locking element is switched on in its locking direction.

Abstract: The central locking system for motor vehicles comprises a plurality of electric locking drives 1 and a time control means 15 which can be triggered by at least one manually switchable control switch 25 in the setting of a switch position allocated to the unlocking direction. The time control means switches on the locking drives 1 for a predetermined time duration in the unlocking direction. In parallel with the contacts 23, 27 of the control switch 25 which are allocated to the unlocking direction there is connected an electronic short-circuit switch 31, 33 which together with the control switch automatically holds the short-circuit switch position and is switchable into its short-circuit position by means of an acceleration switch 28 responding to its acceleration.

Abstract: The central locking system adapted especially to motor vehicles comprises a plurality of electric locking drives and a time control circuit triggerable by at least one control switch in switching over from a first switch position to a second switch position. The time control circuit switches on the locking drives for a predetermined time duration in a predetermined drive direction. A switch signal generator controlled by the control switch generates a first two-level control signal the control levels of which represent the switch positions of the control switch. The switch signal generator in the switching over of the control switch from the first switch position into the second switch position triggers a ramp signal generator which delivers a ramp signal varying in time with constant direction from a predetermined initial level.

Abstract: A central locking system particularly suitable for use in a motor vehicle to lock or open, at one time, all the vehicle doors from any one of a number of locations, includes at least one lock bolt mechanism which provides movement in a selected one of a locking and a release direction to locking elements at the vehicle doors. At least one control switch which may be located at the door on the driver's side of the vehicle is selectively actuable to one of first and second switch positions, and is arranged together with a pulse drive circuit including a capacitor to provide a first drive pulse to the lock bolt mechanism when the control switch is in the first switch position. The first drive pulse causes the lock bolt mechanism to move the locking elements at the vehicle doors in one of the locking and release directions, and is produced by the capacitor in response to a charging current supplied to the capacitor by a charging current circuit.

Abstract: The invention relates to a control circuit for a part which is moved in an oscillating manner by an electric drive, particularly for a driving coil of a vibrating piston compressor whose vibrating piston is spring supported.