Abstract: The transmission structure comprises at least two parallel conducting bands placed on an support of semi-insulating semiconductor material. Said conducting bands are electrically interconnected by concentrated capacities, which are spaced apart at predetermined distances, which are less than the wavelength of the signal to be transmitted.

Abstract: An apparatus for handling palletized goods stacked in tiers consists of a pivoted cradle having two substantially perpendicular supports for the goods, one of said supports normally constituting a horizontal loading plane and the other a vertical supporting plane, said planes being adapted alternatingly to support the goods due to the pivoting movement of the cradle. According to the invention the supporting plane is composed of a plurality of carriages which are movable towards and away from the loading plane in such a way that the various tiers are separable from each other when supported by the supporting plane formed of the carriages.

Abstract: When particulate material reposing on a support or base is to be carried off in an upward direction by means of a vertical conveyor whose lower inlet end portion is vertically and laterally movable, there is a problem involved in the carrying-off of the final, small layer of material on the base and material in recesses and nooks, for example, in the cargo holds of a vessel, which cannot be reached directly by the inlet end portion of the vertical conveyor. This problem has been solved by means of the final unloading apparatus according to the present invention.

Abstract: Electromagnetic method and apparatus to accurately control the orientation of a platform according to two axes wherein pivoting of the platform about two orthogonal axes passing through its center is effected by electromagnetic means, with the servo-control being obtained by using a detector responsive to the angle of deviation from a reference direction, an amplifier, a low-pass filter, a phase lead filter and power amplifiers supplying currents to the electromagnetic devices. The method and apparatus is particularly adapted to the orientation of platforms carrying means such as aerials or inertia wheels intended for piloting a space vehicle.

Abstract: Fluidized bed apparatus, comprising a fluidized bed vessel in which a substantially horizontal rotor disc is arranged above a perforated bottom or above an air chamber for rotary movement about an at least approximately vertical axis and for adjustment along said axis. The fluidized bed vessel is tapered upwardly, one portion inwardly and one outwardly to enhance the flow therein and the rotor disc forms a flat cone and the disc may have a central cone with the rotor disc covering at least the central part of the perforated bottom.

Abstract: A liquid container having a supply of drinking cups nested within the periphery of the jug and accessible by means of a slot in the wall of the container for removal through a top opening differing from the opening through which the liquid is put into the container. Reusable cups may be used without contamination of the liquid.

Abstract: This invention relates to a digital-analog interface for insertion between the control circuit of a moving element and a transmitter of digital control signals.This interface comprises an inductive detector of the actual position of the moving element. The inductive detector has a single primary winding directly connected to an a.c. source and two secondary windings. The detector secondary windings are connected in parallel to one input of a summing circuit, through a first resistance of fixed value and through a second resistance of adjustable value, respectively. Means responsive to the transmitter digital control signals are provided to adjust the value of the second resistance. The output of the summing circuit is connected to the control circuit of the moving element.

Abstract: The invention relates to a fluidized bed apparatus, comprising a vessel in which a foraminous tray separates a treatment chamber from an air chamber disposed underneath the same, and a hollow rotor which is adapted to be driven in rotation and is connected to a blower and has at least one blade, rotating in the vicinity of the foraminous tray and provided with a gas outlet opening, and which leaves free part of the surface area of the foraminous tray.

Abstract: A fluidized bed apparatus comprises a container 18 and a bottom screen 16. The screen 16 comprises a perforated plate 28 having a plurality of large openings therein above each of which is secured a perforated cone 34. Fluid blown through a duct 12 passes through the perforations in the plate 28 and the perforations in the cones 34 into material 10 which is thereby fluidized. Circulation of the material 10 is rendered more uniform and the risk of damage lessened.

Abstract: The valve mechanism is of the type which is provided with a device for automatically controlling the motion of the valve body.The motion of the valve body is determined by the presence of pressure of medium at the outlet end of the valve and is adapted to be controlled by hydraulic damping means connected to the valve body and acting in one direction, manual adjusting means being adapted during opening of the valve, to effect a restricted initial displacement of the valve body in opening direction to permit pressure build-up at the outlet side of the valve.

Abstract: A scavenging blower includes a fan driven by an air-cooled, two-cycle engine for blowing air through an air discharging port. The fan is housed in a fan chamber disposed in side-by-side relation to the engine, and an air passageway is formed around a crankcase of the engine and a fuel tank is located beneath the engine. A handle gripped by one hand is attached to the outer periphery of the fan chamber so that the blower can be operated single-handed.

Abstract: Renewed starting of an intermittently operating pump is controlled in that the running time of the pump from the last start thereof is measured by means of a running time gauge the measuring value of which is maximized, and in that the pause time commencing at the end of the running time is controlled by start delaying means in dependence on the duration, measured by the running time gauge, of the preceding running time such that a long running time gives a short pause time and a short running time gives a long pause time.

Abstract: A method of and apparatus for monitoring the operation of a vehicle comprises sensing means in the form of one or more mercury-containing capsules to sense whether accelerative forces acting on the vehicle in the plane of movement of the vehicle exceed or are less than a predetermined value, a pulse generator operative in response to the sensing means to generate a number of pulses at predetermined intervals when the accelerative forces exceed the predetermined value, an additive memory operative in response to the pulse generator to generate a pulse count representative of the length of time for which the accelerative forces have exceeded the predetermined value, a timer operative to be triggered in response to the sensing means when the accelerative forces exceed the predetermined value, a comparator operative in response to the additive memory and the timer to compare the first signal with a predetermined signal a predetermined period of time after triggering of the timer, and a recorder operative in respo

Abstract: A coil for a dynamic eddy current braking system affixed to the lower half of a vehicle wheel by two steel, yoke-shaped, end supports joined by parallel rectilinear arms, with the end supports spaced for clearance from the coil and along with thin non-magnetic sheets defining free enclosures around the coil ends, the supports having holes to inject an elastomer into the free enclosures. Seals limit the elastomer to the flat portions of the coils and plates in the zone of injection of the elastomer are immobilized in relation to the support parallel to rectilinear arms but separable from the inner wall of the support to permit thermal expansion and contraction of the coil and elastomer in the support without loss of the transmission of forces to the support occurring in the course of braking and without exaggerated transfer of forces to the support in the case of considerable heating or cooling and without detachment of the elastomer in the case of a very considerable drop in ambient temperature.

Abstract: Rotary-wing aircraft rotor comprising a rigid hub coupled to the root of each blade in which a trailing return brace comprises a stack of metal plates alternating with plates of visco-elastic material the ends of which being coupled via a ball joint respectively to the root of one blade and to a place of the hub such that the brace is always slightly inclined.

Abstract: The oscillator comprises a main cavity housing a Gunn diode and auxiliary cavity branching laterally and allowing only inlet of the harmonic components.The auxiliary cavity is provided with harmonic tuning means for varying the reactance of the auxiliary cavity to the harmonic components. The load impedance seen by the Gunn diode is thus varied.

Abstract: A method and device for balancing magnetically suspended bodies wherein at the axial ends of the bodies are included two centering devices on the rotor side constituted by centered and excentric magnetic rings facing two centering devices on the stator side with centered and excentric magnetic rings, the magnetic field in the air gaps between the pairs of rings being made variable according to signals received from correction sensors of the axes and of the alignment.

Abstract: The method makes possible experimentation on reduced scale models, more especially in non-stationary operating conditions, of the rotor of rotary electrical machines respecting the physical conditions which ensure in the rotor under test a simultaneous similitude for the electromagnetic, thermal and mechanical phenomena. The contradiction which appears in the reduction of the electromagnetic forces and of the inertial forces is removed by modifying the stator of the reduced scale model so as to produce in the rotor a correct evolution of the rotor frequencies. The method is useful for testing rotors of very high power electrical machines.

Abstract: An opto-electronic instrument for remote temperature measurement having a measuring probe and a remote supply processing unit connected together by at least one optical fibre. The measuring probe includes at least one polarizer and a temperature sensitive element for receiving, modifying and retransmitting a luminous signal through the fibre which signal has been received from the luminous signal generator of the remote supply processing unit, which unit also includes a variable frequency filter controlled by a ramp generator for transforming the retransmitted luminous signal into a luminous signal, the intensity of which varies sinusoidally with time, and an opto-electrical transducer able to convert this latter luminous signal into a corresponding electrical signal of sinusoidal oscillation for which signal the period of oscillation is then calculated.

Abstract: This invention concerns devices for limiting the flapping movements of the blades of a rotary-wing aircraft main rotor. The device described has a well known reciprocal ring lower abutment common to all the blades. The disadvantages of this well known arrangement is obviated by the use of separate upper abutment devices for each blade. Each upper abutment device comprises a bent lever a first arm of which forms an abutment part and a second arm supports a weight. The lever can oscillate on a pivot and is acted upon by a spring which holds it in a stop position when the rotor stops so that the first arm of the lever extends almost parallel to the axial plane of symmetry of the associated blade. When the rotor rotates at sufficient speed centrifugal force pivots the lever away from the blade root.