摘要:
A metal-laminated base material for printed circuit boards is produced in a double-belt press. Sheets of laminated material impregnated with an accelerated resin system and prehardened are preheated in a preheating zone, before running into a pressure-effective zone of the double-belt press, and are supplied together with the metal foils to the heating region of the pressure-effective zone. Here, the individual layers are pressed to form the base material. The base material is preferably cooled under pressure in a cooling region of the pressure-effective zone, if appropriate heat-treated, trimmed at the edges and cut to length. The process provides uniform base-material boards of perfect quality.
摘要:
The invention shows a shifting device (11, 40) with a servo-assistance device (10) for a transmission (30) of a vehicle. A gear shift linkage (4, 6, 16) is connected with a lever (18) which is connected with a control rod (20) of the assistance device (10) and a gear shift shaft (26, 44) engages in gear shift rails (32) of the transmission (30) by means of levers (28). A central gear shift shaft (44) is provided in the shifting device (40) which is firmly mounted on the transmission housing and can be rotatably actuated by the gear shift linkage (4, 6, 16) actuated by the driver for transmitting the manual shifting force to the disengaging lever (18) of the assistance device (10) and for transmitting the manual shifting force to the gear shift rails (32) of the transmission (30). The central gear shift shaft (44) can also be displaceably actuated by the gear shift linkage (4, 6, 16) to select the gear shift rail (32) to be shifted. The shifting force supplied by the assistance device (10) can be transmitted to an axially fixed hollow shaft (52) in the shifting device (40) which surrounds the central gear shift shaft (44) and can be rotated with the central gear shift shaft (44) to shift the gear shift rails (32).
摘要:
A linear D.C. gas discharge display is provided wherein light emissions resulting from the application of video pulse trains to a linear array of preionized illuminable gas discharge cells comprising the display are used for selective point to point exposure and discharge of a uniformly electrostatically charged photoconductive insulator to thereby produce a latent electrostatic charge image for development. Various embodiments are disclosed for conditioning and addressing the array of illuminable gas discharge cells.
摘要:
An arrangement for the line by line scanning of a document has a line array of individual light sensor elements each of which is characterized by a gas discharge chamber limited on one side by a cathode and on the opposite side by photoconductor layer carrying a transparent and a non-transparent signal electrode. The signal electrodes are common to all the sensor elements in the line array, extend parallel to each other, and are connected to a differential amplifier to eliminate switching transients and dark signals from the information signal.
摘要:
A shifting device (11, 40) with a servo-assistance mechanism (10), in particular for a transmission (30) of a motor vehicle which comprises an assembly for selecting and engaging a gear of the transmission (30) and an element (20) upon which acts a manual shifting force to be assisted. The servo-assistance mechanism (10) can produce a performance characteristic curve which, as a function of the manual shifting force or a shift phase, has ranges with different gradients or proportions with respect to the manual shifting force. Elements (88, 90, 106, 108), upon which a servo-pressure acts, are present in the servo-assistance mechanism (10) for producing the characteristic. In the control system of the servo-assistance mechanism (10), path limitation units and at least one elastic element (84, 110) are provided, upstream from and/or in the servo-assistance mechanism (10), to limit the servo-assistance force in a path-dependent manner for each gate or gear.
摘要:
A servo-assistance device (10) for a shift mechanism of a motor vehicle transmission, with which a characteristic curve can be produced which, as a function of a manual shifting force or a shift phase, has ranges of different gradients or proportionality to the manual shifting force. The servo-assistance device (10) includes an element (20) which is acted upon by the manual shifting force to be assisted. To produce the characteristic curve, the servo-assistance device (10) has components (42, 44, 50, 52) that are actuated by a servo-pressure (60) in such manner that the element (20) maintains its current position.
摘要:
An electro-pneumatic switching unit for a vehicle transmission (6) comprising one splitter group transmission (12) pneumatically switched via valves (36, 38) and one range-change group transmission (14) pneumatically switched via valves (44, 46), the switchings of which are manually preselected by the vehicle driver on a gear lever (16), has one locking device (54, 56) for mechanically preventing the manual switching of inadmissible reduction ratios of the vehicle transmission (6), one device (30, 42, 64) for preventing the pneumatic switching of inadmissible reduction ratios and one electronic control device (20). The locking device (54, 56) for mechanically preventing the manual switching of inadmissible reduction ratios is pneumatically connected with one valve (44) for switching the range-change group transmission (14).
摘要:
A galvanic solid electrolyte sensor for measuring gaseous anhydrides includes a ceramic solid electrolyte that has a material that conducts electrons, a measuring electrode that includes a pure or doped alkaline or alkaline earth salt and a reference electrode spatially separated from the measuring electrode and sealed off from the anhydride measuring gas by a gas-tight enclosure. The reference electrode is made of a metal material that conducts electrons. The gas-tight enclosure is made of a layer of a glass containing zirconium and lead that covers only the material of the reference electrode, with only a marginal area of this layer abutting the solid electrolyte.
摘要:
An image conversion apparatus has a line array of light responsive circuits connected in parallel across a voltage source. Each circuit comprises the capacitance of an elemental area of a photoconductive insulating layer arranged in series with a capacitor which is shunted by a normally open switch. The levels to which charge is distributed in the capcitance of the photoconductive insulating layer and in its associated capacitor is related to the quantity of light incident on the elemental area of the photoconductive insulating layer over intervals an associated switch is open. Closure of a switch serves to discharge its associated capacitor and to cause the capacitance of the photoconductive insulating layer to charge to the voltage of a source from a lower level obtained during open switch intervals. The magnitude of the charging current is related to the quantity of light incident on the elemental area of the photoconductive insulating layer. The switches take the form of gas spaces which are ignitable in turn by read pulses whereby a signal train of individual pulses of magnitudes corresponding to light incident on discrete circuits in the array is generated.
摘要:
A shifting device (11, 40) with a servo-assistance mechanism (10), in particular for a transmission (30) of a motor vehicle which comprises an assembly for selecting and engaging a gear of the transmission (30) and an element (20) upon which acts a manual shifting force to be assisted. The servo-assistance mechanism (10) can produce a performance characteristic curve which, as a function of the manual shifting force or a shift phase, has ranges with different gradients or proportions with respect to the manual shifting force. Elements (88, 90, 106, 108), upon which a servo-pressure acts, are present in the servo-assistance mechanism (10) for producing the characteristic. In the control system of the servo-assistance mechanism (10), path limitation units and at least one elastic element (84, 110) are provided, upstream from and/or in the servo-assistance mechanism (10), to limit the servo-assistance force in a path-dependent manner for each gate or gear.