Analysis of multi-layered filament-wound composite pipes under internal pressure

A protective case for handheld devices with improved protection characteristics, durability, convenience of use, and functionalities without compromising aesthetics. The protective case includes a “glove” or “skin” piece of a softer material that substantially covers and grips the entire back of the electronic device, by wrapping over the edge of the electronic device (without obscuring the display/touch screen on the front of the device). One or more separate complementary frame pieces, braces and the like made of a hard material are attached over the glove piece, extending over a substantial area of the glove piece, thereby creating a robust interlocking hybrid structure. Openings are provided in the protective case to allow for user interaction with the device, including access to the interfaces (e.g., screens, buttons, sockets, etc.) provided on the device.

Protective case having a hybrid structure for portable handheld electronic devices

This disclosure relates generally to an apparatus and/or system for housing a device. The apparatus includes a housing that is configured such that a device may be fitted within the housing and thereby be protected, such as from shocks and/or liquid. The housing may include top and bottom members that may be removably coupled together so as to form the housing. Each top and bottom member optionally includes front and back surfaces surrounded by a perimeter. The perimeter is defined by proximal and distal ends as well as opposing sides. The top and bottom members may include respective clasping mechanisms that extend along the perimeter of the top and bottom members. The clasping mechanisms are configured for coupling the top and bottom members with one another thereby sealing the housing, for instance, in a shock-proof and/or water tight seal.

Housing for encasing an object

Various articles, such as footwear, apparel, athletic equipment, watchbands, and the like, and methods of forming those articles are presented. The articles are generally formed, in whole or in part, using rapid manufacturing techniques, such as laser sintering, stereolithography, solid deposition modeling, and the like. The use of rapid manufacturing allows for relatively economical and time efficient manufacture of customized articles. The articles may include one or more reinforcements configured to provide added durability to various regions of the articles. In addition, the articles may be formed from two or more materials in a single rapid manufacturing process. The rapid manufacturing additive fabrication technique may also include using of varying intensities of the laser to fuse material to form the articles.

Articles and methods of manufacture of articles

Synthesis and study of properties of dental resin composites with different nanosilica particles size

This invention is directed to a shock absorbing device for a shoe sole comprising a lower layer 2 having an upper face 21 and an upper layer 3 having a lower face 30. The two layers 2, 3 are both made of an elastomer. The faces 21, 30 are each formed to have substantially a corrugated section. The corrugated faces 21, 30 each have a plurality of top portions 22, 32, bottom portions 23, 33, and inclined portions 24, 34 joining the top portions 22, 32 and bottom portions 23, 33, with the corrugated faces 21, 30 each being formed from essentially a smooth surface. The corrugated faces 21, 30 mate with each other. The two mating faces 21, 30 are spaced apart from each other at the top portions 22, 32 and/or at the bottom portions 23, 33, with gaps 4 being formed at the spaced-apart portions.

Shock absorbing device for shoe sole

The tensile strength of unidirectional carbon fiber reinforced plastics under a high strain rate was experimentally investigated. A high-strain-rate test was performed using the tension-type split Hopkinson bar technique. In order to obtain the tensile stress–strain relations, a special fixture was used for the impact tensile specimen. The experimental results demonstrated that the tensile modulus and strength in the longitudinal direction are independent of the strain rate. In contrast, the tensile properties in the transverse direction and the shear properties increase with the strain rate. Moreover, it was observed that the strain-rate dependence of the shear strength is much stronger than that of the transverse strength. The tensile strength of off-axis specimens was measured using an oblique tab, and the experimental results were compared with the tensile strength predicted based on the Tsai–Hill failure criterion. It was concluded that the tensile strength can be characterized quite well using the a...

Tensile strength of unidirectional CFRP laminate under high strain rate

A shoe sole includes a mid sole, and a reinforcing member reinforcing a portion of the mid sole, wherein the member 2 extends over an area from a mid foot part 12 to a rear foot part 13 , the member 2 including: a rod-shaped or strip-shaped main bar 21 provided along a line that is at the center of the foot; mid foot medial blades 22 and 23 and mid foot lateral blades 24 and 25 extending from the bar 21 in the part 12 ; a plurality of rear foot blades 26 a and 26 b extending from the bar 21 in the part 13 , wherein the blades 22 to 26 b are integral with the bar 21 , the blades 22 to 25 are attached to a lower surface of the mid sole, and at least a portion of each of the blades 26 a and 26 b is buried in the part 13.

Shoe Sole With Reinforcing Structure and Shoe Sole With Shock-Absorbing Structure

The upper part (U) of each of sports shoes having a first opening (1) surrounding the instep of a foot and allowing the foot to be upwardly projected therethrough when the sports shoes are worn and a second opening (2) closed by a tongue piece (T) which are arranged continuously to each other, comprising an inside extension part (51) covering a part of the inner surface of the plantar arch of the foot, an outside extension part (50) covering a part of the outer surface of the hypothenar of the foot, a front part (3) disposed at the front of the both extension parts (50) and (51), and a rear part (4) disposed at the rear thereof. The extension parts (50) and (51) cross one side-face of the upper part (U) starting at the upper surface of a sole (S) to the second opening (2). The Young’s Modulus of the extension parts (50) and (51) in the foot longitudinal direction (L) is set smaller than the Young’s Moduli of the front part (3) and the rear part (4).

Sports shoes having upper part with improved fitting property

The present invention provides a shock absorbing device for a shoe sole in a rear foot part which can restrain the inclination of the foot toward the medial side while absorbing the shock of landing on the lateral side of the foot. A shock absorbing device for a shoe sole in a rear foot part according to the present invention, includes: a support element M; deformation elements 3 disposed below the support element, the deformation elements deforming to be compressed vertically at landing; and outer sole elements 2 contacting a ground at landing, each outer sole element being joined to a bottom surface of the respective deformation element. Both the deformation elements 3 and the outer sole elements 2 are substantially separated in a medial-lateral direction in the rear foot part to be arranged at least three regions of the rear foot part. A quotient obtained by dividing an area of a bottom surface of the support element M by an area of bottom surfaces of the outer sole elements 2 is set at about 1.3 or more in the rear foot part. A vertical compressive stiffness of the deformation element 3 disposed on the lateral side is smaller than that of the deformation element 3 disposed on the medial side.

Tsuyoshi Nishiwaki

Papers

Shock absorbing device for shoe sole

Tensile strength of unidirectional CFRP laminate under high strain rate

Shoe Sole With Reinforcing Structure and Shoe Sole With Shock-Absorbing Structure

Sports shoes having upper part with improved fitting property

Shock absorbing device for shoe sole in rear foot part