Patent application number | Description | Published |
20090222668 | Group Signature Scheme With Improved Efficiency, in Particular in a Join Procedure - A method for managing a group signature scheme includes in a setup procedure for group initialization, generating, by a group manager, a group public key. In a join procedure for the group manager to add a new member to the group, the method includes generating by the new member, user information, and providing the generated user information to the group manager, and computing, by the group manager, membership information for the new member based on the user information received by the new member and on the group public key, and providing to the new member the computed membership information. In particular, the membership information is computed, by the group manager, as a function of the inverse of a given hash function of the user information. In a signing procedure for a group member to sign a message on behalf of the group, the method includes: using, by the group member, the membership information and the user information. The method further includes the use of digital certificates, in order for the group member to prove to the group manager the possession of said user information. | 09-03-2009 |
Patent application number | Description | Published |
20080216542 | Rolling Mill with Stands with Three Adjustable Rolls - The invention relates to a rolling mill for tubes, in which a series of roll-holder containers ( | 09-11-2008 |
20110154876 | ROLLING MILL OF ROTATING EXPANDER TYPE FOR TUBULAR BODIES WITH TIP-STABILIZING SYSTEM - A rolling mill of rotating expander type for tubular bodies, comprising: working rollers ( | 06-30-2011 |
20110277526 | Mandrel Holder Head With Release Device - A mandrel holder head with release/fastening device of the mandrel for rolling metallic tubes comprises a mandrel holder ( | 11-17-2011 |
20110277527 | MULTI-STAND ROLLING MILL OF THE LONGITUDINAL ELONGATOR KIND FOR ROD-SHAPED BODIES, COMPRISING FOUR-ROLLS STANDS, AND METHOD FOR SUBSTITUTING THE STANDS - There is described multi-stand rolling mill with stands having four motorized rolls and provided with controls outside the stand and retractile spindles, which comprises a central body with said stands; a first platform ( | 11-17-2011 |
20120103049 | ROLLING PROCESS AND RELATING LONGITUDINAL, MULTI-STAND ROLLING MILL OF CONTINUOUS, RESTRAINED TYPE FOR HOLLOW BODIES - A longitudinal, multi-stand rolling mill of the continuous, restrained type for rolling hollow bodies is described, which comprises a main rolling mill ( | 05-03-2012 |
20130133392 | ROLLING MILL STAND AND RELATED ROLLING MILL FOR LONGITUDINALLY ROLLING ROD-SHAPED BODIES - A rolling mill stand and related rolling mill for rolling rod-shaped bodies, even large in size, which meets the requirement of stiffness uniformity of the rolling mill stands in the transversal direction, all the hydraulic capsules being firmly fixed to the external structure of the rolling mill and providing for the side change of the rolls of each stand. The arrangement of rolling rolls and related extensions of each rolling mill stand is such to avoid problems of corrosion and damaging to the extensions themselves and to the reducers due to the drainage of the cooling waters. | 05-30-2013 |
20130298631 | ROLLING MILL STAND AND RELATED ROLLING MILL FOR LONGITUDINALLY ROLLING ROD-SHAPED BODIES - A rolling mill stand and related rolling mill for rolling rod-shaped bodies, even large in size, which meets the requirement of stiffness uniformity of the rolling mill stands in the transversal direction, all the hydraulic capsules being firmly fixed to the external structure of the rolling mill and providing for the side change of the rolls of each stand. The arrangement of rolling rolls and related extensions of each rolling mill stand is such to avoid problems of corrosion and damaging to the extensions themselves and to the reducers due to the drainage of the cooling waters. | 11-14-2013 |
Patent application number | Description | Published |
20130061646 | PROCESS FOR ROLLING TUBES IN A CONTINUOUS MULTI-STAND ROLLING MILL - A tube rolling plant (R) with multi-stand rolling mill having two or more rollers, for implementing a mandrel rolling process with controlled speed has a mandrel ( | 03-14-2013 |
20130255343 | DRIVE SHAFT FOR TRANSMITTING MOTION TO A ROLL - A drive shaft for transmitting motion to a roll of a tube rolling stand comprising a telescopic body, a slide and a support base. The telescopic body is fixed by one end with a cardan joint to the drive shaft of the gearbox, and on the other end has a fitting for attaching the roll. The slide is hinged to the support base and may rotate under the bias of a jack to either engage or release the telescopic body. A snap-action locking device, contained within the telescopic body, comprises a cylinder, on which two rocker arms are hinged, and a spring which spreads the rocker arms making the two teeth fit into two holes in the wall of the cylinder, when the drive shaft is at its maximum working length. The carriage has two pistons to work on the two rocker arms thus freeing the locking device and allowing the telescopic sliding of the cylinder in the cylinder and the downward rotation of the drive shaft. | 10-03-2013 |
20140096580 | ROLLING STAND WITH THREE WORKING ROLLS - A rolling stand ( | 04-10-2014 |
20140230513 | ROLLING STAND FOR TUBES OR ROUNDS - A rolling stand for tubes or rounds comprising two or more rolls ( | 08-21-2014 |
20150128678 | THREE-ROLL ROLLING MILL STAND WITH SIDE CHANGE WITH RESPECT TO THE ROLLING LINE - A roll-holder cartridge for a three-tube rolling stand with means adapted to release a tube during rolling in case of emergency. The roll-holder cartridge ( | 05-14-2015 |
20160059284 | MANDREL CONVEYING DEVICE FOR A TUBE ROLLING MILL - A rolling plant (R) for rolling tubes having a multi-stand rolling mill ( | 03-03-2016 |
20160059285 | INTEGRATED TRANSVERSE ROLLING MILL FOR SEAMLESS TUBES - An integrated transverse rolling mill for rolling seamless tubes with skewed axes comprising a piercing stand ( | 03-03-2016 |
20160067754 | THREE-ROLLING STAND WITH LATERAL CHANGE - A method and a device for releasing a tube during a rolling process in a three-roll rolling stand in case of an emergency. The roll holder cartridge ( | 03-10-2016 |
Patent application number | Description | Published |
20110021302 | Power split transmission - A transmission has a directional mechanism, a planetary gear mechanism, a stepped transmission and a continuously variable ratio device. The directional mechanism has at least one direction clutch. The planetary gear mechanism is connected to the direction mechanism and has at first planetary gear set and a second planetary gear set. The stepped transmission is connected to the planetary gear mechanism and has at least one speed clutch. The planetary gear mechanism is connected to a hydrostatic motor of the continuously variable ratio device. The motor is connected to a variable displacement pump of the continuously variable ratio device. | 01-27-2011 |
20150377333 | HYDROSTATIC AND DIRECT DRIVE TRANSMISSION - A hydrostatic driveline is provided. The hydrostatic driveline comprises a power source, a hydrostatic pump, a hydrostatic motor, a direct drive link, and a transmission portion. The power source is drivingly engaged with an input member. The hydrostatic pump is in driving engagement with the input member. The hydrostatic motor is in fluid communication with the hydrostatic pump. The direct drive link is in driving engagement with the input member. The transmission portion is in driving engagement with a vehicle output and at least one of the hydrostatic motor and the direct drive link The transmission portion includes at least one engagement device and a drive ratio. The hydrostatic pump, the hydrostatic motor, and the transmission portion form a first power path for the hydrostatic driveline and the direct drive link forms a second power path for the hydrostatic driveline. | 12-31-2015 |
20160076633 | DIRECT DRIVE HYDROSTATIC TRANSMISSION - A hydrostatic driveline and method of operating a hydrostatic driveline is provided. The hydrostatic driveline comprises a power source, hydrostatic pump, a hydrostatic motor, a direct drive link, a first transmission portion, and a second transmission portion. The direct drive link is in driving engagement with at least one of the power source and the hydrostatic pump. The first transmission portion is in driving engagement with a vehicle output and the hydrostatic motor. The second transmission portion is in driving engagement with the direct drive link and at least one of the vehicle output and the first transmission portion. The hydrostatic pump, the hydrostatic motor, and the first transmission portion form a first power path for the hydrostatic driveline and the direct drive link and the second transmission portion form a second power path for the hydrostatic driveline. | 03-17-2016 |
Patent application number | Description | Published |
20100192637 | Circular Knitting Machine for Socks with Needles on the Dial - A circular knitting machine for men's socks with needles on the dial comprising a dial needles selector mechanism able to selectively move the dial needles to involve the selected needles in the formation of the stitches and to exclude the needles not selected. In addition the machine is able to repeatedly perform transfer of the stitch from the cylinder to the dial. Moreover, the machine is fitted with a mechanical traction mechanism for tensioning the sock being formed. In addition, the machine presents expedients to limit the deformation of the selector rods and reduce detrimental effects on the actuator or flaws in the formation of the stitch. | 08-05-2010 |
20100313607 | METHOD AND APPARATUS FOR CLOSING A TUBULAR KNITTED ARTICLE AT ONE OF ITS AXIAL ENDS, AT THE END OF ITS PRODUCTION CYCLE ON A CIRCULAR KNITTING MACHINE FOR HOSIERY OR THE LIKE - A method and an apparatus for closing a tubular knitted article at one of its axial ends, at the end of its production cycle on a circular knitting machine for hosiery or the like. The method consists in ending the production of an article at one of its axial ends. The article is then picked up from the machine and transferred to a handling device located in a sewing or looping station. The pick-up is performed by transferring individually the loops of the last row of knitting from the needles of the machine to spikes of the handling device, which has an annular body composed of two semiannular elements. The article is then turned, and one of the two semiannular elements is turned over with respect to the other one, so that the spikes of one semiannular element face, and are aligned with, the spikes of the other semiannular element. The loops of knitting arranged on the spikes of one semiannular element are transferred to the spikes of the other semiannular element so that each spike of the latter semiannular element supports a pair of loops of knitting. | 12-16-2010 |
20100313608 | TURNING DEVICE FOR TUBULAR KNITTED ARTICLES, PARTICULARLY FOR SEWING OR LOOPING STATIONS FOR THE AUTOMATED CLOSING OF TUBULAR ARTICLES AT AN AXIAL END THEREOF - A turning device for tubular knitted articles, particularly for sewing or looping stations for the automated closing of tubular articles at an axial end thereof comprising a lower portion and an upper portion, which are arranged respectively below and above an intermediate region at which elements are or can be positioned for supporting the tubular article to be turned, which hangs at one of its axial ends and is arranged substantially vertically, a tubular body, which can be inserted from the bottom upwardly, with its upper axial end, through the axial end of the article that hangs from the supporting elements, so as to evert the article onto the outer lateral surface of the tubular body, extracting it progressively from the upper axial end of the tubular body. Auxiliary sliding elements are provided, which can move on command with respect to the tubular body, parallel to the axis of the tubular body, and can engage and disengage cyclically the article everted onto the outer lateral surface of the tubular body in order to produce its sliding toward the lower axial end of the tubular body. | 12-16-2010 |
20100319408 | PICK-UP DEVICE FOR PICKING UP A TUBULAR KNITTED ARTICLE FROM A CIRCULAR KNITTING MACHINE FOR HOSIERY OR THE LIKE AND FOR TRANSFERRING IT TO A UNIT ADAPTED TO PERFORM ADDITIONAL WORK ON THE ARTICLE - A pick-up device for picking up a tubular knitted article from a circular knitting machine for hosiery and for transferring the article to a unit adapted to perform additional work thereon. The device comprises an annular pick-up body that supports pick-up members that can slide with respect to the pick-up bodyalong radial directions. The pick-up body can be arranged coaxially around the needle cylinder of a circular knitting machine for hosiery so that each one of the pick-up members faces laterally a needle of the machine. The end of each one of the pick-up members that is directed toward the axis of the pick-up body has a seat that can engage a region of the stem of the needle that is arranged proximate to the latch of the needle on the opposite side with respect to the head of the needle. The device comprises actuation elements formed by elastic elements that act on the pick-up members for their sliding toward the axis of the pick-up body and radial pushers that act on the pick-up members for their sliding away from the axis of the pick-up body in contrast with the action of the elastic elements. | 12-23-2010 |
20120103024 | CIRCULAR KNITTING MACHINE FOR MEN'S SOCKS, OF THE TYPE WITH NEEDLES ON THE DIAL - A circular knitting machine for men's socks comprises a cylinder, cylinder needles, movement devices of the cylinder needles, sinkers ( | 05-03-2012 |
20130269394 | CIRCULAR KNITTING MACHINE FOR MEN'S SOCKS, OF THE TYPE WITH NEEDLES ON THE DIAL - A single cylinder circular knitting machine ( | 10-17-2013 |
20140123711 | MANUFACTURED APPAREL PRODUCTS MADE BY CIRCULAR KNITTING MACHINES - Manufactured apparel products are provided which are made entirely on a circular knitting machine having needles on its dial. Such products include socks having patterns of the links-links type with a cut yarn central motif of the ribbed type with cut yarn central motif and of the interrupted and resumed ribbed type with or without cut yarn central motif. Methods of making such products are also provided. | 05-08-2014 |
Patent application number | Description | Published |
20160097316 | METHOD FOR OPERATING A COMPRESSION IGNITION ENGINE - A method for operating a compression ignition engine includes forming a combustible mixture by mixing generally homogeneously a first fuel and air and introducing this mixture into the at least one cylinder, compressing the combustible mixture with the piston in a compression stroke, injecting a second fuel to the combustible mixture at an injection-time of the second fuel during the compression stroke but before start of combustion, and continuing the compression stroke until combustion starts at those locations in the at least one cylinder where concentration of the second fuel is highest and/or the temperature of the mixture is the highest. Emission of the cylinder and/or mechanical stress of the cylinder caused by the combustion are monitored, and if emissions and/or mechanical stress are above respective predetermined thresholds, individually for the cylinder, the amount and/or the timing of the second fuel injected, and/or temperature of the cylinder charge is changed. | 04-07-2016 |
20160097338 | METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE - A method of operating a compression ignition engine uses an engine having a cylinder and a piston moveable in the cylinder. The method includes forming a combustible mixture by mixing generally homogeneously a first fuel and air and introducing this mixture into the at least one cylinder, and compressing the combustible mixture with the piston in a compression stroke. During the compression stroke but before start of combustion, a second fuel is added to the combustible mixture, thus creating a cylinder charge, the second fuel being easier to autoignite than the first fuel. The compression stroke is continued until combustion starts at those locations in the cylinder where concentration of the second fuel and/or temperature of the mixture is highest. A temperature of the cylinder charge and/or the amount of second fuel added to the combustible mixture is chosen such that a desired duration of combustion can be achieved. | 04-07-2016 |
Patent application number | Description | Published |
20110135425 | CHARGING INSTALLATION FOR A SHAFT FURNACE AND LOWER SEALING VALVE ASSEMBLY THEREFORE - The invention concerns a charging installation for a shaft furnace, in particular for a blast furnace, and especially the lower sealing valve assembly thereof, the installation including at least two hoppers acting as lock hoppers for intermediate storage of charge material to be charged into the furnace, the lower sealing valve includes a lower sealing valve housing arranged below the hoppers, the lower sealing valve housing has at least two inlets respectively communicating with one of the hoppers and an outlet for passing charge material into the furnace, each inlet has a respective associated valve seat providing gas-tight sealing of the hoppers downstream, the lower sealing valve assembly further includes a sealing valve mechanism for sealing the inlets, more specifically for closing the seats in technically gas-tight manner, where the sealing valve mechanism includes a one-sided shutter having a single sealing face that cooperates with both of the at least two valve seats, by virtue of the sealing valve mechanism being configured to bring the sealing face of the one-sided shutter into sealing contact in turn with each of the at least two valve seats for sealing the associated inlet. | 06-09-2011 |
20110182700 | LOWER SEALING VALVE ASSEMBLY FOR A SHAFT FURNACE CHARGING INSTALLATION AND VALVE ACTUATION MECHANISM THEREFORE - A lower sealing valve assembly for a shaft furnace charging installation including a lower sealing valve housing with a lower outlet through which charge material can freely drop onto a distribution device, the housing has at least one upper inlet for communicating with an outlet of a hopper arranged above the housing, where each inlet has an associated valve seat that is arranged inside the lower sealing valve housing and turned towards the interior of the housing, a shutter is further operatively connected to an actuation mechanism for moving the shutter into and out of sealing contact with the valve seat, the valve actuation mechanism includes a turn-slide cylindric joint having a typically vertical joint axis for swiveling the shutter in a plane perpendicular to the joint axis inside the lower sealing valve housing and for translating the shutter up and down along the joint axis such that the cylindric joint includes a shaft that is axially fixed and rotatably in a hollow sleeve, which in turn is axially slideable in an outer shell that is fixed to the housing and, further according to the invention, the mechanism includes a first hydraulic cylinder, which is connected on one side to the shell and on the other side to the hollow sleeve to impart axial translation to the sleeve and therewith to the shaft along the joint axis; and: a second hydraulic cylinder, which is hinged on one side to the sleeve and on the other side to the shaft, to impart rotation to the shaft and about the joint axis. | 07-28-2011 |
20110274519 | LOWER SEALING VALVE UNIT FOR A BLAST FURNACE TOP CHARGING SYSTEM - A lower sealing valve unit for a charging system of a shaft furnace includes a housing having a pair of inlets and at least one outlet; a valve seat associated with each inlet; and a flap associated with each valve seat and adapted for, in a closed position, engaging the valve seat to sealingly close the inlet, each flap being supported by a pivotable shaft allowing displacement between the closed position and an open position off the associated valve seat, where a common structure, mounted to one side of the housing, includes a pair of drive mechanisms, each connected to one of the pivotable shafts for independent actuation thereof, the shafts passing coaxially though the housing side and being supported by the common structure. | 11-10-2011 |