Abstract: Methods and systems for managing and/or processing a blockchain to maintain data security for confidential and/or personal data are provided. According to certain aspects, the disclosed data security techniques may enable access sharing functionality utilizing the blockchain. The data security techniques disclosed herein also enable the use of smart contracts to transfer funds associated with payment obligations. A node may receive a transaction indicative of a settlement condition of a smart contract being satisfied. Accordingly, the transaction may be compiled into a block of a blockchain and routed to the smart contract. The smart contract may direct a node to transfer funds in accordance with the payment obligations.

Abstract: The present disclosure generally relates to methods and user interfaces for authentication, including providing and controlling authentication at a computer system using an external device in accordance with some embodiments.

Abstract: A cot can include a support frame that extends between a front end and a back end. A front leg and a back leg can be slidingly coupled to the support frame. A front actuator can be coupled to the front leg and slide the front leg to retract and extend the front leg. A back actuator can be coupled to the back leg and slide the back leg to retract and extend the front leg. One or more processors can execute machine readable instructions to receive signals from one or more sensors indicative of the front end of the cot and the front leg. The one or more processors can actuate the back actuator to extend the back leg to raise the back end of the cot, when the front end of the cot is supported by a surface and the front leg is retracted a predetermined amount.

Abstract: A doctor blade head assembly, particularly for use in a flexographic printing press, has a head body pivoted to a support frame with an inflatable air tube disposed therebetween. The air tube extends along a channel having a bottom formed with spaced apart raised portions which cause the air tube to bulge out at these locations. In this way the air tube essentially only presses against the head body at these spaced apart locations, for example at the center and adjacent the ends, which reduces the tendency of the head body to bend along its length. This provides a more uniform ink film on the ink roll being inked by the doctor blade head assembly. End seal arrangements at the ends of the head body each include a resilient block seal and a resilient pad seal with which greased edge portions of the doctor blades slidably engage. The doctor blades overhang the ends of the ink roll, and an ink outlet passageway extends through each end seal arrangement independently of the seals.

Abstract: A lead edge sheet feeder, particularly for corrugated paperboard sheets, has an endless belt transfer section downstream of a control gate. This endless belt is driven at constant speed and at least first and second vacuum boxes are disposed successively along the transfer belt. Both vacuum boxes are continuously connected to a vacuum source. Each vacuum box has an open face which has to be completely covered by the sheet being fed before that vacuum box is effective in drawing the sheet against the transfer belt. There may be a third vacuum box, and vent holes may be provided in a common partition between the third and second vacuum boxes. The feed section, upstream of the control gate, may have modes for long and short sheets, in the shorter sheet mode less length of sheet being contacted by a feed conveyor.

Abstract: A recreational vehicle including a runner, such as a ski, and a seat for a rider supported by a pedestal on the runner. The ski may take the form of a snow ski or grass ski. The pedestal may be permanently or removably secured to the runner. The seat may also be shock-mounted and, if desired, two seats may be mounted in tandem on the runner.

Abstract: A method and apparatus for mounting a die, particularly a rigid cutting die, on a die cylinder includes having a bubble along a seal on the die to bridge any gaps between the die and the die cylinder when the die is initially positioned on the die cylinder. This bubble seal enables a vacuum to be applied between the initially positioned die and the die cylinder to pull the die down against and into conformity with the surface of the die cylinder, at the same time flattening the bubble seal. A key at a trailing edge of the die locates in an axial keyway in the die cylinder to circumferentially position the die; a bolt is then inserted at a leading edge of the die to establish axial location. During operation the die is held in position by the vacuum. Beam sensors and light reflectors may be incorporated to sense when a wrong die is present and shut down the apparatus.

Abstract: Sheet feeding apparatus, particularly for feeding corrugated paperboard sheets to container blank processing machinery, has an indexing transmission for cyclically accelerating and decelerating belts or the like for frictionally engaging and feeding sheets from an end of a stack of sheets. A cam arrangement cyclically shifts the feed belts or the like relative to a stack support surface between an operative position for feeding and an inoperative position. The accelerating and decelerating cycle of the belts occurs twice per machine cycle. The cam arrangement preferably comprises a single lobe cam and a double lobe cam, either of which can be selectively chosen for shifting the belts. When feeding one sheet per machine cycle of the downstream machinery, the single lobe cam is employed to shift the belts into the operative mode only once per machine cycle.

Abstract: An aluminum base, low-melting temperature alloy for joining together titanium surfaces. The alloy is fabricated from an admixture containing a major amount of aluminum in an amount in excess of about 41 weight percent and minor amounts of silver and copper.

Abstract: A silver-based, low-melting temperature brazing alloy containing minor amounts of aluminum, copper, and lithium if desired, for brazing titanium structures.