A helmet has inner and outer shells separated by a plurality of interconnected relatively soft columns or posts. The columns each have a middle post or pillar section, a capital that is of larger diameter than the post, and a base also of larger transverse dimension than the post. When an impact above a design threshold occurs on the outer shell, the columns, particularly the post sections thereof, near the impact location compress and buckle, dissipating impact kinetic energy, while columns spaced from the impact zone stretch and support more of the impact force. The applied force is therefore reduced and spread out over a relatively large area, and a resultant wave created within the column manifold disperses additional heat, further reducing the force and torque applied on the outer shell and transmitted to the inner shell and onto the skull of a helmet user. A method and mold for fabricating the column manifold are also disclosed.

Systems and methods for creating microneedle arrays capable of delivering a suitable drug dosages to subjects are provided. In one aspect, a method comprises creating at least one forming mold using laser ablation in a cross-over line pattern. The method further comprises casting a first material onto the at least one forming mold to create at least one microneedle mold. The method further comprises casting a second material onto the at least one microneedle mold to create at least one hollow microneedle.

A writing utensil adapted for promoting the development of a tripod writing grip includes an elongate body having a substantially polygonal cross section, and having three faces extending between a proximal end and a distal end thereof, and a boss member extending from an intermediate portion of the elongate body, the boss member being adapted for impeding a user's fingers from sliding along a longitudinal axis of the elongate body.

A sintering jig according to the disclosure includes a first plate including a plurality of protrusions and a second plate stacked on the first plate and including through holes corresponding to the protrusions. The through hole includes a cylindrical portion through which the protrusion enter and exit and a conical portion widening towards an upper surface of the second plate from the cylindrical portion.

A helmet has inner and outer shells separated by a plurality of interconnected relatively soft columns or posts. The columns each have a middle post or pillar section, a capital that is of larger diameter than the post, and a base also of larger transverse dimension than the post. When an impact above a design threshold occurs on the outer shell, the columns, particularly the post sections thereof, near the impact location compress and buckle, dissipating impact kinetic energy, while columns spaced from the impact zone stretch and support more of the impact force. The applied force is therefore reduced and spread out over a relatively large area, and a resultant wave created within the column manifold disperses additional heat, further reducing the force and torque applied on the outer shell and transmitted to the inner shell and onto the skull of a helmet user. A method and mold for fabricating the column manifold are also disclosed.

A writing utensil adapted for promoting the development of a tripod writing grip includes an elongate body having a substantially polygonal cross section, and having three faces extending between a proximal end and a distal end thereof, and a boss member extending from an intermediate portion of the elongate body, the boss member being adapted for impeding a user's fingers from sliding along a longitudinal axis of the elongate body.

An article of footwear may include an upper forming a void within the footwear, a sole structure secured to the upper, and a chamber that encloses a pressurized fluid. The sole structure includes a depression. The chamber is located within the void of the upper and located on the depression of the sole structure. The chamber may include a plurality of fluid-filled subchambers, a manifold, and a connection fluidically-connected at least one of the subchambers to the manifold. The subchambers may enclose the pressurized fluid at different pressures. The subchambers may be separated from one another by a bonded area in the direction extending between the heel and toe of the chamber.

A method for manufacturing two soundproof panels of an aircraft nacelle including a duct. The manufacturing method includes a step of supplying a mold having, on a single face, a cavity for each soundproof panel, a step of producing, in the bottom of each cavity, an inner skin for being oriented towards the duct, and a curing step during which the elements present in the mold are cured in the mold. Such a method makes it possible to produce the two soundproof panels in the same mold, thus reducing the gaps between them after they have been positioned.

An apparatus includes a fixed assembly and a reciprocating assembly. The fixed assembly includes a hopper, a first gas manifold, and a dispensing chamber, and the reciprocating assembly includes a channel assembly defining a channel conduit, a shield plate vertically aligned therewith, and a second gas manifold. The reciprocating assembly may move, in relation to the fixed assembly, to a first position to enable the channel conduit to be filled with bulk compressible material from the hopper, a second position to enable compressible material to be pushed from the channel conduit to the dispensing conduit and to be compressed in the dispensing chamber according to a first gas directed through the channel conduit by the first gas manifold, and a third position to enable the compressed material to be pushed out of the dispensing conduit according to a second gas directed through the dispensing conduit by the second gas manifold.

The invention concerns an injection overmoulding device comprising at least one indexed rotary turret on which cooled moulds are installed, each mould comprising a plurality of cavities, and at least five stationary stations arranged around said turret, including at least a first station, a second station and a third station that are used, respectively, for carrying out the operations of positioning the inserts in the cavities of the mould, injecting plastic material into the cavities of the mould, and demoulding the at least partially cooled objects. The device comprises, for each mould, at least separate injection means. The invention also concerns a method implemented by the device.