Abstract: The artificial lift control system utilizes a piggy back line, flow computer, pressure transmitter, and software control to control artificial lift of wellbore fluids. The piggy back line is a medium to high pressure line strapped to the outside of the tubing. Supply, make-up gas or other fluids are pumped down the piggy back line at the lowest flow rate possible. Extremely low flow rates are utilized to minimize friction of flow in the piggy back line. A pressure or differential pressure transmitter is installed to monitor pressure on the piggy back line or to measure the differential pressure between the piggy back line and the casing pressure. The flow computer monitors pressures or differential pressures, utilizes software instruction sets to calculate fluid levels in the casing tubing annulus, and cycles artificial lift on and off based on parameters set in the flow computer software.

Abstract: A complementary clock system is disclosed for producing antiphase clock signals. The system includes a clock generator for producing a first clock signal (t3) and a second clock signal (t4). A first and second driver stage coupled to the clock generator for driving respective clock lines having a capacitive load that corresponds to a first load capacitance and a second load capacitance, respectively. A switchable current path coupled between the first and second clock lines which contains a gating circuit and at least one inductive element. The gating circuit being in a conducting state essentially during the switching intervals (ti) of the first and second clock signals (t3, t4).

Abstract: A control process for the driving stability control of a motor vehicle is provided. The signal sent out by a control law unit to generate the necessary additional torque is sent to a distribution logic unit, which subsequently sends the pressure signals used to actuate the individual wheel brakes. The superimposition of these pressure signals and the pressure signal characterizing the driver's desire to brake (as well as the subsequent superimposition of these adjusting signals to adjusting signals arriving from other brake pressure controllers, such as ABS, TSC, EBV) leads to interfaces in which differing physical variables must be compared or superimposed. The necessary conversion of these variables is expensive and increases the inaccuracy of the control system. Simplified interfaces are provided, to achieve improved processing of the brake pressure desired by the driver, and possibly to avoid the conversion of the individual signal variables.

Abstract: A connector is described which can be surface mounted to a rigid or flexible circuit board. The connector includes a plurality of contacts (36) fixed to a dielectric locator (42), with the lower ends (46) of the contacts soldered to the surfaces of contact pads formed along traces on the circuit board (14). After the contacts are soldered in place, a connector housing (72) is slid downwardly around the locator and the lower end of the housing is adhesively sealed by adhesive (70A) to the circuit board around the contacts. A potting compound (92) such as epoxy is then injected into the housing, to bond the circuit board to the contacts and to the inside surface (86) of the housing. The connector is inserted up into an aperture (16) in a rigid mounting wall (20) and mounted thereat, with the circuit board being supported on the connector and through it on the mounting wall.

Abstract: A pivot joint includes a housing surrounding a rotatable shaft. A retainer clip frictionally engages the shaft and seats against one end of the housing to fixedly axially position the rotatable shaft and the housing with respect to each other and to a rotatable lever connected to one end of the rotatable shaft. In one embodiment, the rotatable shaft is hardened and the retainer clip is hardened to a higher hardness than the hardness of the rotatable shaft. In another embodiment, a pair of retainer clips frictionally engage opposite ends of the rotatable shaft and seat against the rotatable lever and one end of the housing to form a fixed dimensional relationship between the housing, the rotatable shaft and the lever. The retainer clip may include notches formed on the edge of a frusto-conical annulus surrounding a central aperture in the retainer clip to form a discontinuous shaft engaging surface.

Abstract: A night vision monocular that includes an objective lens subassembly for receiving low intensity and/or infrared light. The objective lens subassembly focuses the light onto an image intensifier tube that converts the light into a visible image. The visible image passes through a collimator subassembly that collimates the visible image. Finally, the collimated image is viewed through an eyepiece subassembly. The objective lens subassembly, image intensifier tube, collimator subassembly and eyepiece subassembly are each separately manufactured subassemblies that are encased in subhousings and are ready to be assembled into a larger optical device. The housing of the present invention night vision monocular is a two piece structure, having a first half and an opposite second half. Partitions extend inwardly from a plurality of locations on both halves of the housing. The partitions are contoured and positioned to abut against and retain the various subassemblies within the night vision device.

Abstract: There is disclosed encryption apparatus for generating a deterministic psuedorandom keystream of data derived from a secret key and a prearranged initial state and modulo-N adding the random data to plain text data to form a cipher text data stream to be transmitted. In order to reduce spoofing, which is the ability to alter received plain text by altering the transmitted cipher text there is means responsive to the plain text for altering a portion of the plain text data relative to corresponding cipher text data according to a permutation function which varies according to a selected keystream whereby one who does not possess said secret key cannot decrypt said cipher text and while preventing spoofing.

Abstract: An appliance which, through motor-driven operation, is movable toward a closing edge, in particular, for use with window regulators and sliding roofs of automotive vehicles. For this purpose, the number of revolutions of the motor is permanently detected, with the number of revolutions of the motor being measured in successive measuring intervals. The number of revolutions is to be a measure of the force acting on the pane. Respectively the last four measured values are detected in a sliding register and are subjected to evaluation. For this purpose, first a start-up value is detected. The start-up value respectively is the third last measured value n.sub.i-3 if the difference D between the current measured value and the third last measured value does not exceed a predetermined differential threshold D.sub.max. For, in that case, the start-up value remains unchanged. Subsequently, the difference A is formed between the start-up value and the current value n.sub.i.

Abstract: An FET device is disclosed of the type typically fabricated on a substrate and including an active FET region, an input port, an output port, a common connection and via ground connections for coupling the common connection to a ground. The improvement includes the via connections being disposed on an outer periphery that bounds the active FET region which reduces the distance between the common connection and ground, and thereby reduces the associated common lead inductance.

Abstract: A method for controlling the brakes in an automotive vehicle. The vehicle has a velocity and a plurality of wheels, each wheel having an angular velocity and a brake which is operable by applying a pressure agent to the brake. An amount of the pressure agent to be applied to, or released from, each brake, individually, to implement a desired braking operation is determined. Switching times corresponding to the amounts of the pressure agent are calculated for opening and closing the inlet valve or outlet valve of each respective brake, individually. An estimated vehicle velocity and an estimated wheel angular velocity which result from applying the pressure agent to the brakes are determined. The actual velocity of the vehicle and the actual angular velocity of the wheels are determined by measuring the angular velocity, and determining the velocity based on the measurement.

Abstract: A secondary lock is provided to prevent deflection of a tine and therefore prevent loss of a contact, which can be used in miniature connectors having a large number of contacts and corresponding miniature tines. A first tine (71, FIG. 6 ) at each contact-receiving passage (20) of the connector, has a substantially straight inner tine side (82) extending forwardly and with a radially inward directional component, and has an outer tine side (84) with a forward surface portion (86 A) that extends substantially parallel to the axis of the passage. The secondary lock includes a post (24) that is slidable parallel to the contact-receiving passage and that has a blocking surface (90) that lies close to, but slightly spaced from the forward surface portion of the outer tine side. The forward surface portion (86A) extends forwardly about as far as contact-abutting ends (64, 65) of the tines. The contact-receiving passages are arranged in two concentric circles (21, 23 FIG.

Abstract: A metal heat dissipation element is made an integral part of a metal houses of a motor, then a bearing plate of plastic material is injection-molded onto the housing. Preferred embodiments relate to the increased strength of the housing for which purpose additional plastic components in the form of webs are produced in the injection-molding operation.

Abstract: A control process for controlling the driving stability of a motor vehicle is provided. The difference between the actual value of the yaw rate and the desired value is measured in a control process to form the additional yawing moment for stabilizing the vehicle. Instead of using yaw sensors for the direct measurement of the yaw rate (yaw angular velocity), two lateral acceleration meters are provided in the sensor. Advantageous variants include the use of the yaw acceleration and/or its derivative as the controlled variable, instead of the yaw rate.

Abstract: Apparatus for controlling an automotive vehicle is provided. The vehicle has a plurality of wheels, each wheel having an individually operable brake. The apparatus comprises a mechanism for determining the steering angle of the vehicle. A yawing moment controller receives the steering angle and determines a moment that is applied to the vehicle to prevent an undesirable yaw angle, yaw rate or yaw acceleration. Distribution logic receives the output of the yawing moment controller. The distribution logic determines a respectively different weighted coefficient for each individual brake, and an individual braking pressure to be applied to each respective one of the brakes based on the moment and the respective weighted coefficient of the one brake.

Abstract: Disclosed is a digital pulse shaping circuit for reducing undesirable frequency components in subsequent data modulated transmissions, which circuit can be easily manufactured as a monolithic integrated circuit. In a preferred embodiment, the pulse shaping circuit employs an edge detector circuit to detect data transitions of an incoming serial data stream. Upon a data edge detection, the edge detector provides a control signal to a digital counter to enable the counter to begin counting applied clock pulses and generate a linear count. The linear count is provided to a decoding circuit, which generates an output word as a nonlinear function of the value of the count. The decoded output word then drives a digital modulator which modulates an RF carrier to provide wireless data transmission with improved spectral efficiency.

Abstract: A retainer for releasably locking the male and female component of a quick connector together. The retainer is releasably insertable into a transverse bore formed in the female component and includes an edge slidable over a radial flange on the male component only when the male component is fully coupled in an axial bore in the female component. The engagement of the edges and the radial flange on the male component permits full insertion of the retainer into the transverse bore in the female component around the male component to lock the male component and female component together. Lock projections on the retainer engage grooves in the housing to releasably lock the retainer in a partially inserted, shipping position in the transverse bore in the female component and engage exterior lock surfaces on the housing on full insertion of the retainer to lock the retainer and the fully inserted male component to the female component.

Abstract: A method of manufacturing a steering column stalk switch apparatus includes the steps of fixedly engaging a hub attached to an elongated shaft to one end of a hollow housing having apertures formed at opposite ends, movably mounting a button in one of the apertures in the housing, the button being movable between first and second positions and biased to the first position, mounting a first electrical contactor having first electrical contacts thereon in the button, movably mounting a second electrical contactor with second electrical contacts thereon in the housing, the first and second electrical contacts being co-planarly aligned, mounting a circuit board with conductive tracings in the housing such that the first and second contacts slidably engage the conductive tracings and complete circuits therebetween depending upon the position of the first and second electrical contacts, mounting the second electrical contactor on a movable carrier in the housing, biasingly mounting a detent paw on the carrier, alig

Abstract: A hydraulic motor vehicle brake installation, the braking pressure modulation of which occurs over adjustable wing cell pumps, as space-saving solution it is proposed to have all the required wing cell pumps driven over a common shaft by a turning-rate stabilized electric motor. An individual control of each individual wing cell pump occurs through the drive of a lift ring each by one proportional magnet per wing cell pump.

Abstract: A transmission gear for use with systems for cleaning windscreens, window-panes or optical instruments, comprising a wiper arm supported by a carriage performing reciprocating movements, and a gear for transforming rotary movements into oscillating movements, which cooperates with a driving means and actuates the carriage, with the gear, on the driven side, being connected to a shaft performing oscillating movements.