Abstract: The invention relates to an internal ventilation device for helmets for motorcyclists. The ventilation system is integrated into the helmet body so that it is flush with the surface of the helmet cap. The ventilation system contains a front covering connected to back covering by a canalisation to form a duct with the internal surface of the cap. A sliding plate is transversely mounted between the front covering and the back covering and is capable of sliding within the duct. The front covering further comprises a central opening and two side openings each having a wing to open and close the opening. A system of levers and striker plates are provided on the sliding plate to allow opening and closing of the wings.

Abstract: An integrated circuit has a first external supply terminal and a second external supply terminal for applying an external supply voltage to the circuit. The integrated circuit includes an analog unit supplied by at least one internal supply voltage derived from the external supply voltage, a low-pass filter connected to the first external supply terminal and to the second external supply terminal, and a driver connected between the low-pass filter and the analog unit for supplying the at least one internal supply voltage.

Abstract: The invention relates to a driver circuit for P-channel MOS switches including a power transistor having a control terminal and first and second conduction terminals, a controlled current generator connected to the control terminal for turning on the power transistor, a control circuit for controlling the turning on of the current generator, and a protection circuit coupled to the control terminal. The driver circuit may also include a second current generator connected to the control terminal of the power transistor which is in turn driven by the control circuit to control the transistor turn-off. Advantageously, the control circuit may also receive a control signal from the protection circuit at the end of the latter's action.

Abstract: The read circuit includes a biasing stage connected to the memory cell to be read and having the purpose of biasing the drain terminal of the memory cell at a preset operating potential, typically 1 V; and a regulating circuit connected to a supply line set at a supply voltage and supplying to the biasing stage a bias current which is stable as the temperature and the supply voltage vary.

Abstract: A circuit for selectively enabling one circuit from among a plurality of circuit alternatives of an integrated circuit, comprising selection circuit means for selecting one among said circuit alternatives. The selection means are controlled by bistable circuit means having a preferred state. Disactivatable forcing means associated to said bistable means are provided for forcing said bistable means in a state opposite than said preferred state, so that when said forcing means are disactivated the bistable circuit means automatically switch to said preferred state.

Abstract: A switching circuit is for switching an output thereof to one of a plurality of N input clock signals which are delayed relative to one another. The switching circuit includes at least one circuit responding to a control signal to enable the transmission, on an output signal, of a new signal of the plurality of input signals. The new signal is advanced or delayed relative to a current signal of the plurality of input signals which is currently transmitted on the output signal. The at least one circuit enables the transmission of the new signal before disabling the transmission of the current signal on the output signal. This substantially prevents the production of false signals during the switching of the output signal from one of the clock signals to another.

Abstract: A circuit having an anti-interference filter constituted by an inductor in series with one of the supply terminals of the car radio and by a capacitor in parallel with the supply terminals, and a diode connected in series with the inductor for protection against reversal of the polarity of the battery. The connection circuit may include an electronic switch between the node of the connection of the inductor to the diode and the other supply terminal, and a circuit for controlling the switching of the electronic switch. A voltage raiser that utilizes the components of the filter for its operation is thus produced.

Abstract: A device for ensuring self-massaging of the foot when walking. The device includes a foot engaging surface comprising a base having raised prints incorporated thereon. The foot engaging surface is one of a standard type, a medical type, and a paramedical type. The foot engaging surface is one of a stocking, a tight, a sock and a foot pad.

Abstract: The invention relates to spectacles with a wire frame where the frame has a mounting structure for the lenses and two sidepieces connected to the mounting structure by a hinge portion. According to the invention, the mounting structure of the two lenses has loops made in it, each loop being elastically deformable in such a way that it can elastically and temporarily vary the amplitude of the area enclosed by the mounting perimeter of the frame relative to the corresponding edge of the lens so as to facilitate the fitting of the lenses in the frame rims.

Abstract: A switching regulator having a switching element, a control loop for varying a duty cycle of the switching element according to a difference between a switching regulator output electric quantity and a target output electric quantity, and a digital soft start-up circuit for digitally controlling the duty cycle of the switching element, independently from said difference, in a start-up phase of the switching regulator operation.

Abstract: An embodiment includes an optical source, an optical receiver, and an interconnecting optical fiber. A data sequence is received and encoded or formatted as an IP packet using an encoding format capable of returning a signal representing the IP packet to a predetermined value at the beginning of each bit period of the IP packet at a physical layer of the network. The encoded IP packet is then transmitted directly over an optical layer of the network without adapting the IP packet to another encoding format or using an adaptation layer in the network (e.g., at a data link layer or higher). The optical receiver receives the IP packet and then a clock signal is extracted without the overhead and costs associated with additional adaptation or encoding of the IP packet.

Abstract: Plant for supplying machines with dyes for the continuous dyeing of textile materials, comprising means for preparing a dyeing bath, the dyeing bath consisting of a mixture of dyeing products, chemicals and/or auxiliary products in aqueous solution, said means comprising an apparatus (12, 13, 14) for the preparation of dyeing solutions in preset strengths starting from said dyeing products, a plurality of tanks (1) for said chemicals and/or auxiliary products to which one or more pumps (6; 10) are associated for the removal of respective products, and an array of conduits for water supply. The outlets of said means are connected to a manifold (26) downstream of which is a dyeing machine (M) to be supplied, and to which manifold (26) means (27) are associated for mixing the products arriving thereat: the means for the preparation of the dyeing bath being associated to a programmable electronic unit (U). (FIG. 2).

Abstract: Mechanism for cutting and distributing portions of sheet, particularly paper towels, comprising at least one cylinder (9) which can rotate around its axis in a supporting structure (1, 2, 3) and drag an end portion (8) of at least one sheet, inside said cylinder (9) being arranged one or more movable blades (28) which can protrude outside the cylinder (9) for cutting said end portion (8) of the sheet and are fixed to a shaft (26) suitable for rotating around an axis parallel to the longitudinal axis of the cylinder (9), wherein said shaft (26) is provided with at least a first member (30) which protrudes from one side of the cylinder (9) and can be rotated for an arc of a circumference by at least a second member (25) which shifts in a direction parallel to the longitudinal axis of the shaft (26) of the movable blades (28) and rotates around this axis, the rotational-translational motion of this second member (25) being synchronized with the rotatory motion of the cylinder (9).

Abstract: A device for varying, in an exercise apparatus, forces and movements between a movement organ and resistive means, comprises a pulley; a movable structure, bearing a pivot pin for the rotation of the pulley, whereto is applied a traction force correlated to the muscle effort of the person performing the exercise; a cable element wound on the pulley, forming a pair of parallel branches, whereof one is connected to the resistive means, the other to a bar able to move within a guide. The device comprises selective fastening means which, in a first operative condition, anchor the bar to the guide opposing twice the force of the resistive means to the pin; and which, in the second operative condition, allow the bar to translate until it abuts against the movable structure, opposing a reaction force equal to the reaction force of the resistive means to the pin.

Abstract: The present invention concerns a method for producing a corrugated pasta sheet, facilitating the adherence of the sauce to the surface, in which the pasta sheet is obtained by forcibly extruding the dough through a slot in a die plate, comprising the stages during which at least one surface of the sheet is crimped repeatedly using at least one raised arm-type flexible, elasticized blade whose free end comes into contact with the sheet. The blade is inflected reciprocally by the dragging action exerted on it by the sheet as it passes through the slot and by the returning action produced by its elastic properties. An apparatus putting into operation the method described above also forms part of the invention.

Abstract: Presented is a method of enhancing the rate of removal of a photoresist layer from wafers of semiconductor material after the latter have gone through various process steps to define the patterns of integrated circuits. The method includes heating the wafer and treating it with low-pressure steam in a vacuum environment before starting to remove the photoresist by plasma or wet solutions. This pre-treatment of the photoresists allows the time for removing the photoresist to be reduced substantially and eliminates problems from residue.

Abstract: A method and apparatus for quenching and scrubbing a hot gas using a liquid in a single packed column while controlling mist formation. Hot gas is introduced at the bottom of the column and drawn upward countercurrent to the scrubbing liquid. The column has three stages, each packed and fed liquid from above. The first stage is a quench region wherein the gas flow rate, liquid flow rate and liquid temperature are controlled such that the quench rate does not exceed 5.4° C./ft2 of packing to prevent formation of an aerosol mist. The second and third stages for scrubbing employ packed regions separately supplied with increasingly cooler and purer liquid.

Abstract: The filter includes an arithmetical chain of parallel adders alternated with delay elements, and a memory constituted by lines of one-bit cells. Each line is addressable by a decoder controlled by a digital signal to be filtered; each line of memory contains side by side values which correspond to the partial products of successive impulse-response coefficients for a value equal to the line address. The memory additionally includes a number of read amplifiers. The number of read amplifiers is equal to the number of cells of one line in order to read the bits of the addressed. The outputs of the amplifiers are connected to respective parallel inputs of the adders of the arithmetical chain. Each memory line contains these values in two's-complement binary form in words which decrease in length by one bit for each increment of 2 in the characteristic of the coefficients, starting from the one of lowest characteristic.