Abstract: An apparatus and a process for catalytic cracking of a hydrocarbon feed is described, carried out in at least two reaction zones, one (30) operating in catalyst riser mode, wherein the feed and catalyst from regeneration zone (3) are circulated from bottom to top, the first gases produced are separated from the coked catalyst in a first separation zone (38), the catalyst is stripped (40), a first cracking and stripping effluent (42) is recovered and the coked catalyst is recycled (45) to the regeneration zone. Catalyst (12) from regeneration zone (3) and a hydrocarbon feed (19) are introduced into the upper portion of a dropper reaction zone (16), the catalyst and feed being circulated from top to bottom, the coked catalyst is separated from the second gases produced in a second separation zone (20), the second gases (24) produced are recovered and the coked catalyst is recycled (25) to the regeneration zone.

Abstract: Device that is integrated in a chamber that allows a separation of a mixture that comprises at least one gaseous fraction and one liquid fraction, whereby said mixture is obtained from a zone for bringing into contact a liquid phase, a gaseous phase and solid particles.

Abstract: Device that is integrated in a chamber that allows a separation of a mixture that comprises at least one gaseous fraction and one liquid fraction, whereby said mixture is obtained from a zone for bringing into contact a liquid phase, a gaseous phase and solid particles.

Abstract: A reconfigurable backplane assembly for a programmable digital radio and consisting of a printed wire matrix plate including connectors for electronic circuit modules, power cables, RF cables, and optical cables with the connectivity between digital signals being dynamically reconfigurable electronically and with connectivity between power signals, optical signals and RF signals being manually reconfigurable.

Abstract: A high-temperature superconductive microwave delay line that operates in an essentially pure TEM field configuration in a compact assembly. The delay line is a planar signal delay line which includes first and second substrates made of first and second dielectric materials; each substrate can be LAO material. First and second patterned delay line segments having a configuration, are formed of first and second conductive materials on the obverse sides of the first and second substrates, respectively. On the reverse side of each of the first and second substrates, respective first and second ground planes are formed using respective first and second conductive materials, which are preferred to be high-temperature superconductive films, such as YBCO films. The delay line also includes coupling means for coupling the first patterned delay line segment to the second patterned delay line segment, thus bringing the two patterned delay line segments into substantial contact.

Abstract: A suspension device for preventing swivel wheel wobbling over uneven terrain of a cart, such as a shopping cart, equipped with a pair of laterally opposite swivel wheels. The suspension device consists of a rigid elongated cross-member, fixedly mounted to the cart frame; an elongated arm, defining first and second opposite ends; a first mount, for mounting the arm to the cross-member for relative movement thereabout, whereby the arm first and second ends are movable relative to the ground in opposite directions. Stoppers restrain relative movement of the arm first and second ends within a prescribed play. A second mount rotatably mounts the two swivel wheels to corresponding opposite ends of the elongated arm, wherein the relative movement of the arm is responsive to ground terrain irregularities.

Abstract: A process for discharging solids from a vessel having at least three successive beds of solid particulate material with at least two of the beds being of different solid material than the other. The process comprises opening a lowermost closure and discharging the lowermost bed from the vessel while maintaining other closures in closed positions. After discharging the lowermost bed, opening the next-to-lowermost closure to permit the next-to-lowermost bed of solids to replace the lowermost bed, and repeating this operation up through all the beds without mixing of the beds, and discharging each bed separately from the vessel.

Abstract: The device comprises a housing attachable to the handle bar of a nestable cart, such as a shopping cart. The housing has a front and a back key slot, each for receiving a key. Key locking members are mounted in the housing, each associated with a key slot. These locking members are interconnected by a position-inverting mechanism, so that when one locking member is in a key-locking and retaining position, the other locking member is in a key-releasing position, and vice versa. A key is attached to each housing by means of a flexible link, such as a chain, long enough to be inserted into the back key slot of the housing of the next nested cart. However the flexible link can be longer than this requirement. The keys are retained in their back key slots and thus the carts are interlocked in a nested position. The key of the frontmost cart is used to unlock the latter.

Abstract: The invention concerns a process for recovering power in a fluid catalytic cracking unit used particularly for the treatment of heavy charges, wherein at least a portion of the power available in the gas flows withdrawn from two catalyst regenerators (4) and (21) of a fluid bed catalytic cracking unit are recovered.According to the invention the fumes from regenerator (4) are fed to one of the stages of a turbine (35), the pressure in this stage being lower than the pressure of the fumes from regenerator (4) and the fumes from regenerator (21) (whose pressure is lower than that prevailing in the first regenerator (4)) are fed to another stage of the same turbine (35) whose pressure is lower than that of the stage to which the fumes of regenerator (4) are supplied.

Abstract: A positive locking mechanism is provided for securing a plug-in electronic odule in a chassis. A threaded element is provided for attaching the electronic module to the chassis and tightening of the threaded element forces a module connector into engagement with a mating connector in the chassis. A pivotal driver blade is provided for turning the threaded element and, after the connectors are mated, the driver blade is pivoted and a cam thereon actuates wedges which provide a good thermal interface between the electronic module and the chassis. The driver blade also serves as means for extracting the plug-in electronic module from the chassis.

Abstract: The application discloses an apparatus for removing bottle caps in which a lever is pivotally mounted at one end in a housing in a passageway into which the bottle, of which the cap is to be removed, is inserted. The lever has a cap removing hook intermediate its ends and a spring at the end away from the pivoted end pivots the lever to remove the cap. The lever is moved to spring loaded cap-removing position by a motorized cam having a lever pressing pin at its periphery.