A system includes a control device including an actuator, a movement of which is adapted to cause a movement of an actuator plunger; and a switching element. The switching element includes a switch slide adapted to follow a movement of the actuator plunger; a first terminal and a second terminal; contacting members adapted to connect the first terminal to the second terminal; and contact breaking member adapted to disconnect the first terminal from the second terminal in response to an inward di…

A system (10) comprises a carrier (1) which is adapted to carry an optical fiber (9) and an optical chip (3) having a circuit element (4). The carrier and the optical chip are provided with co-operable alignment features (13,14) for aligning the carrier with the optical chip so that the optical fiber and the circuit element are optically coupled.

A control system for a variable displacement fluid pump or motor device having a displacement control mechanism operable upon actuation to vary the amount of fluid displaced by the device. An actuating means is operatively coupled to the displacement mechanism and actuates the same when communicated to a source of fluid pressure, the actuating means comprising a housing having a pressure chamber with a piston member movable therein in response to pressure fluid. The piston has a restricted passa…

A solid state static converter is connected to receive a three-phase A.C. input and directly supply a direct current output to a D.C. motor which operates a traction sheave to control the movement of an elevator car. The magnitude and direction of the direct current output from the static converter is controlled by an error signal derived by the summation of a speed signal obtained from a tachometer coupled to the motor drive shaft and a vehicle speed command signal provided by a pattern generat…

An apparatus for effecting mass transfer in fermentation reactions is disclosed. The apparatus includes a cylindrical vessel with two impellers located toward the top and bottom of said vessel, one of which is an axial flow impeller and the other is a radial flow impeller. A draft tube of uniform diameter throughout substantially all of its length having an open bottom is located within and coaxial with said cylindrical vessel. The lower impeller being said radial flow impeller is located below …

In a facsimile system having a carrier movable linearly in both directions with a read-head and a write head for scanning an original paper and/or a printing paper, the movement of the carrier of the facsimile system in a receiving mode is initiated by the synchronization signal sent from another facsimile system in a transmission mode, thus the operation of the facsimile system in the receiving mode is synchronized with that in the transmission mode, on a start-stop basis. Said synchronization …

A microprocessor system includes a microprocessor, a memory, and an interface adaptor all coupled to a data bus. The interface adaptor is coupled between the data bus and a peripheral device, such as a teleprinter. A first interrupt conductor is connected to the peripheral device and to interrupt logic circuitry in the interface adaptor. A second interrupt conductor is connected to the microprocessor and the interrupt logic circuitry. The interrupt logic circuitry is also coupled to and interrog…

A system wall or system ceiling comprising a number of supporting girders suspended from the structure of the building and to which slabs are mounted substantially extending perpendicular to the girders, the girders being provided with outwardly or downwardly protruding clamping feet engaging into one or more slits, cut into the upper or back side of the slabs.

A system for first justifying a text line according to a system minimum escapement unit, and then rejustifying the line according to a minimum escapement unit for a printer which is to be utilized in printing the line. The first justification of the line is in a normal manner. That is, any residue is divided by the number of word spaces on the line to obtain a quotient and any remainder. The extent of word space expansion is then the value of the quotient plus the remainder until exhausted. Reju…

A transportation system having a roadway and vehicles movable over the roadway, the vehicles being levitated over the roadway by air cushion or magnetic means and the vehicles and the roadway having cooperable magnetic means for maintaining the vehicles properly aligned relative to the roadway. A vehicle movable over a roadway provided with ferromagnetic side rails, the vehicle having selectively energizable electromagnet assemblies at its sides cooperable with the ferromagnetic side rails for m…