The present invention is a lightweight archery arrow having an arrow shaft with internal bracing, an arrow tip, and a nock. The arrow shaft with internal bracing is a cylindrical tube having a plurality of ribs formed along the length of the cylindrical tube. The ribs increase the bending stiffness of the cylindrical tube without adding additional thickness and weight. Due to the increased bending stiffness of the cylindrical tube provided by the ribs the wall thickness of the cylindrical tube may be reduced while still maintaining the bending stiffness comparable to that of an arrow shaft having a thicker wall. The decrease in wall thickness and the reduction of material reduces the weight of the arrow shaft providing an arrow shaft with an exterior diameter and bending stiffness comparable to that of a standard arrow shaft, but being lighter in weight.

A method for bending a flexible panel includes first, providing an airbag assembly; second, inflating the airbag assembly; next, abutting against the bending area with the airbag assembly; and lastly, bending the flexible panel by pivoting on the airbag assembly so that a bent portion of the flexible panel tightly contacts a surface of the airbag assembly, and the terminal area is located behind the flexible panel. The airbag assembly includes a housing and an elastic film. The housing includes at least one outlet and at least one inlet. The elastic film wraps the housing to form a gas chamber. The outlet and the inlet communicate with the gas chamber.

A tubular material application system for applying a tubular material onto an elongate mandrel includes a gripper system including a first gripper and a second gripper configured to move with inchworm-type movement along an elongated mandrel and incrementally apply a tubular material onto the mandrel to thereby result in a tubular material-mandrel assembly.

A fiber product folding apparatus includes a first dashed-line cutting device used to form a plurality of first dashed lines on a first fiber product. Through control of the rotational speed of the first dashed-line roller, the interval between adjacent first dashed lines is adjusted. A first severing device receives the first fiber product with the first dashed lines by a predetermined length and cuts off the first fiber product. A second dashed-line cutting device is used to form a plurality of second dashed lines on a second fiber product. Through control of the rotational speed of the second dashed-line roller, the interval between adjacent second dashed lines can be adjusted. A second severing device receives the second fiber product that includes the second dashed lines by a predetermined length and cuts off the second fiber product. Finally, the first fiber product and the second fiber product are conducted to pass between a first folding roller and a second folding roller to proceed with folding. Since the dashed line interval of the fiber products is the size or length of a single sheet of fiber product, controlling the rotational speeds of the dashed-line rollers would allow for adjustment such that folding can be performed for multiple forms.

The present invention relates to an apparatus and a method of folding a pouch case of a battery cell, and more particularly, to an apparatus and a method of folding a pouch case of a battery cell capable of preventing a meandering in a folding process and reducing non-uniformity of a folding amount by forming a pre-folding line on a pouch wing and folding the pouch wing on the basis of the pre-folding line.

A forming device, system, and method for continuous forming of a semi-finished fiber product. The semi-finished fiber product is supported flatly from a first side and is at least locally restricted in its freedom of movement, for example pressed on and/or guided, on another side opposite the first side. The further restriction occurs in relation to a guiding area at at least one constant location or region past which the semi-finished fiber product is guided. Shaping tools and guiding areas defined thereby are used for support, and hold-down devices and their contact surfaces are used for further restriction. The further restriction is carried out transversely to a feed motion direction of the semi-finished fiber product through the forming device. The further restriction and the flat guidance serve to reduce formation of undulations and folds.

The invention relates to a roller door comprising a door leaf which is movable between an open position, in which it uncovers a wall opening at least partially and preferably forms a multi-layer coil at least partially above the wall opening, and a closed position, in which it closes the wall opening at least partially, said door leaf having a plurality of door leaf segments arranged one behind the other in the direction of movement of the door leaf. At least one stabilizing device extending perpendicular to the direction of movement of the door leaf is arranged between two door leaf segments, and the mutually facing edge regions of the door leaf segments are held on the stabilizing device, at least one edge region of at least one segment being held in a floating manner on the stabilizing device in such a way that a relative movement of this edge region with respect to the stabilizing device is possible at least in the direction of movement of the door leaf.

In one aspect of the present subject matter, a method of forming a linear panel includes drawing a multi-layer panel material assembly having differing inner and outer material layers along a processing path. The method also includes heating the panel material assembly. In addition, the method includes forming the heated panel material assembly into a desired shape as the assembly is drawn along the processing path. Additionally, in another aspect of the present subject matter, a linear panel includes a body formed from a multi-layer panel material assembly having differing inner and outer material layers.

A tubular material application system for applying a tubular material onto an elongate mandrel includes a gripper system including a first gripper and a second gripper configured to move with inchworm-type movement along an elongated mandrel and incrementally apply a tubular material onto the mandrel to thereby result in a tubular material-mandrel assembly.

A system and method for forming an integral flange in an end portion of a composite laminate structure, such as an aerospace or other vehicle structure. First and second tool components cooperate to support the structure during a layup process, with the second tool component imparting an initial angle to the end portion. A third tool component includes a male radius positioned at an apex of the initial angle. A heater heats a succession of localized areas along the end portion to lower a viscosity of the resin. A roller applies pressure to the succession of localized areas after each is heated so as to push them around and against the third tool component to form a flange angle and the integral flange. The heater and the roller may make multiple passes along the end portion, with the roller angle increasing with each pass until the flange angle is achieved.