An article with a sole structure including a first layer and a second layer are disclosed. The first layer includes a set of apertures arranged in an auxetic configuration that permit the first layer to exhibit a first auxetic behavior. The second layer includes a set of projections arranged in an auxetic configuration that permit the second layer to exhibit a second auxetic behavior. The first layer and the second layer may be joined together in a manner that allows the first auxetic behavior to occur independently of the second auxetic behavior.

The polygonal part (1) has, on each side (C1 to C6), at least one of the following assembly elements: at least one lug (3), at least one recess (4), each of said lugs (3) and each of said recesses (4) of the part (1) having a trapezoidal shape, with in each case complementary shapes, the trapezium of each of said lugs (3) widening towards the outside of the part (1) and the trapezium of each of said recesses (4) widening towards the inside of the part (1), and each of said lugs (3) having a width, defined transversely with respect to a right bisector of the corresponding trapezium, which is greater than the width of each of said recesses (4).

A device and a method for machining of a flat side of an optical workpiece. The device has two flat guides and a side guide for fluidic guidance of a spindle unit and/or a slide. A linear drive with an assigned tool is located on a slide with a turntable. Highly accurate machining is enabled.

A device and a method for machining of a flat side of an optical workpiece. The device has two flat guides and a side guide for fluidic guidance of a spindle unit and/or a slide. A linear drive with an assigned tool is located on a slide with a turntable. Highly accurate machining is enabled.

A retention knob for use with a tool holder that is less prone to distorting a tapered tool holder surface, especially if it is over-tightened. The retention knob includes a knob head, a flange engageable with an end of a tool holder shank, a pilot segment receivable by the counter bore defined by said tool holder shank and a threaded segment spaced from said flange by an undercut segment. The threaded segment is configured so that it has a length that is substantially the minimum length required to achieve maximum thread holding strength. The undercut segment is configured to space the threaded segment from its head so that a distal end of the threaded segment is substantially near the bottom of the tapered bore forming part of the tool holder. With the disclosed construction, an upper portion of the threaded tool holder bore is not engaged by the threaded segment. The threaded segment has balanced threads which is achieved by locating the lead-in of the thread 180 from the lead-out of the thread. Chamfer angles at the lead-in and lead-out of the threaded segment are controlled to be the same or substantially similar.

A thermally insulated container (10) includes an inner container (11), and an outer container (14) surrounding the inner container (11) via a void (15). Each of the inner container (11) and the outer container (14) contains a fiber reinforced plastic prepared by impregnating a base material with a resin. The inner container (11) includes a first tubular container (13) and a second tubular container (22) each having an internal holder (23, 24) to reserve a refrigerant (16), and a refrigerant inlet tube (12) through which the refrigerant (16) is introduced. The holder (24) is in communication with the holder (23). The base material in each of a predetermined area of the second tubular container (22) and a predetermined area of the outer container (14) contains woven fabrics. The predetermined area of the outer container (14) further includes a honeycomb sheet.