703 results about "Square cross section" patented technology

A honeycomb structure which includes an inlet end and an outlet end opposing each other and a plurality of cell channels extending along an axis from the inlet end to the outlet end, the cell channels having non-equal, square cross-sections, and an extrusion die for making the same.

An iso-truss structure (10) includes at least two helical components (30, 32) and at least one reverse helical component (34) attached thereto with opposing angular orientations. Each helical and reverse helical component preferably includes at least four elongate, straight segments (22) rigidly connected end to end in a helical configuration forming a single, substantially complete rotation about a common axis (14) forming a first square cross section. The structure may further include at least two rotated helical components (80, 92) and at least one rotated reverse helical component (98) which are rotated with respect to the helical and reverse helical components forming a second square cross section, rotated with respect to the first. The structure may be straight, curved, flexible, or form angles.

A micro-machined MEMS resonator gyroscope and accelerometer is fabricated from an epilayer semiconductor wafer to incorporate a substantially planar, H-shaped resonator mass suspended from a support plate by two opposed elongated springs that couple to the relatively short crossbar member of the H. The masses are harmonically oscillated relative to the support plate and a baseplate portion, and two orthogonal modes of the structure corresponding to the two nearly degenerate fundamental torsional modes thereof are used for sensing angular rate about one axis, and linear acceleration along two axes, of the sensor. The H-shaped mass advantageously incorporates a relatively high length-to-width aspect ratio, and in one embodiment, the springs may advantageously incorporate either a square cross-section, such that the structure can be tuned to substantially match the fundamental frequencies of the two resonance modes of the structure by removing, e.g., by an etching process, a small amount of material from the upper surfaces of the springs.

A nestable container designed for efficient storage when the containers is not in use and for safe handling when in use. The container has four outwardly bowed sidewalls flared upwardly from its bottom with each sidewall connected to adjacent sidewalls by an inwardly fluted web to form a essentially square cross section. The webs define finger gripping corners at the edges of the sidewalls that allow the container to gripped better by a user. The containers can be nested with other containers of different sizes without wasting space. The essentially square configuration of the containers also make them easy to pack with or within other containers, that are typically also square or rectangular.

The fully prefabricated assembled steel-steel concrete structure includes two kinds of assembling forms. The first one is fully prefabricated assembled steel column-steel concrete structure, and its prefabricated steel column consists of H-shaped steel column, reinforcing concrete ribs, supporting steel plate and prestress-shearing force friction nodes with shear resisting strips. The second one is fully prefabricated assembled prefabricated steel pipe-concrete column-steel concrete structure, and the prefabricated steel pipe-concrete column consists of steel pipe with square cross section, micro expanding high strength concrete cast inside the steel pipe and shear resisting strips attached to the outer wall of the steel pipe to form preshearing force-friction type nodes. The present invention has raised antiseismic performance, area utilization, construction efficiency, fireproof performance, low cost and small member size, and is suitable for various buildings.

A driver tool configured to engage and drive the head of a threaded fastener includes a shank defining a longitudinal axis. The shank has a mating end and a driver end. A driver head is coupled to the shank adjacent the driver end. The driver head includes a first driving portion having a substantially square cross section normal to the axis and a geometric center along the axis. The first driving portion includes four walls and a corner at an intersection of adjacent walls such that the first driving portion includes a first corner, a second corner, a third corner opposite the first corner, and a fourth corner opposite the second corner. The driver head further includes a second driving portion including a first flange extending radially outward from the first driving portion and a second flange extending radially outward from the first driving portion. The second flange is opposite the first flange, and each of the flanges includes an end wall having a midpoint. A plane passing through the first corner and the third corner of the first driving portion passes through the midpoints of the end walls of the second driving portion.

Nanowhiskers are grown in a non-preferential growth direction by regulation of nucleation conditions to inhibit growth in a preferential direction. In a preferred implementation, <001> III-V semiconductor nanowhiskers are grown on an (001) III-V semiconductor substrate surface by effectively inhibiting growth in the preferential <111>B direction. As one example, <001> InP nano-wires were grown by metal-organic vapor phase epitaxy directly on (001) InP substrates. Characterization by scanning electron microscopy and transmission electron microscopy revealed wires with nearly square cross sections and a perfect zincblende crystalline structure that is free of stacking faults.

A windshield wiper device, in particular for a motor vehicle, includes a wiper arm (10) that is drivable by a drive, the wiper arm (10) being foldable onto the windshield and able to be folded away from the windshield. The wiper arm is associated with a wiper blade, whereby the wiper arm (10) has a region (11) that faces toward the drive and a region (12) that faces toward the wiper blade. Both regions are connected to two torsion spring elements (13, 14). The torsion spring element (13, 14) are provided with two opposite torsion angles. The torsion spring elements (13, 14) have a square cross section, whose width is greater than its thickness, so that the torsion spring elements (13, 14) are curved in a longitudinal direction toward the windshield or curved away from the windshield.

A honeycomb filter includes an array of interconnecting porous walls which define an array of first channels and second channels. The first channels are bordered on their sides by the second channels and have a larger hydraulic diameter than the second channels. The first channels have a square cross-section, with corners of the first channels having a shape such that the thickness of the porous walls adjoining the corners of the first channels is comparable to the thickness of the porous walls adjoining edges of the first and second channels.

A light unifier, which comprises a plurality of light sources, particularly laser diodes, emitting parallel light beams of a rectangular cross-section, for focusing the light energy of all the beams onto a target area through beam-shaping means, which comprises transverse collimators, means for juxtaposing the emitted beams to form a unified beam, a longitudinal collimator for longitudinally collimating the unified beam, and means for focusing it onto the target area. The light beams have a transverse and a longitudinal divergence and the ratio of the transverse divergence to the longitudinal divergence is higher than 1. The transverse collimators are placed at such a distance from the sources that, at the point at which the beams reach them, the sum of the short sides of the beams is equal to the long side of each of them at the point at which they reach the longitudinal collimator. The number of light sources is such as to permit to obtain a unified beam that has a square cross-section and the same divergence on all its sides. Two groups of laser diodes may be arranged in parallel or mutually perpendicular planes and the unified beams produced by them are focused together onto the target area.

A high-strength rectangular pintle veneer tie and cavity wall anchoring system employing the same is disclosed. The rectangular wire formative construct optionally includes a square cross-section that provides greater volumetric occupancy than that of a similar diameter circular wire formative. The interengaging portions and insertion portion are optionally compressed for greater strength and the rectangular shaped interengaging portion provides a locking interconnection within the anchor precluding significant movement lateral with or normal to the inner wythe.

A header tank for a heat exchanger includes tank forming sections that are joined into a tubular shape with a substantially square cross-section. The header tank has a refrigerant low path formed inside the tank forming sections include a tank upper section (31) in which tube insertion holes (31a) for connecting tubes of a heat exchanger core are formed. The tank lower section (33) having a substantially U-shaped refrigerant split-flow groove (33A) that has, in its longitudinal direction, communication holes (33a, 33b) for the refrigerant. The tank forming sections include a plate section (35) for closing an opening of the refrigerant split-flow groove (33A) to form a refrigerant split-flow path (37) inside the tank lower section.

A clad pipe (70) is produced by heating PVDF to 180° C., and then this PVDF being extruded from a melt-extrusion device. The clad pipe (70) has a square cross-section whose sides L1 are 20 mm length, and in a center thereof, there is a square hole. In the square hole, a core (72) mainly includes PMMA is formed. Accordingly, a preform (12) having a clad (71) of PVDF and the core (72) of PMMA is obtained. The preform (12) is heat-soften-drawn at 210° C. A drawing ratio is 1600. Finally, an optical member (14) having a 0.5 mm square cross-section is obtained.

The invention relates to a square cross-section jacking-pipe tunneling machine, which comprises a square shell of a square cross-section jacking pipe. The jacking pipe is divided into an operation cabin and a mud cabin by a cabin separating plate; a main motor and an auxiliary motor are arranged in the operation cabin; cutting mechanisms such as a main cutter disc, auxiliary cutters and a cutter are arranged in the mud cabin; the main motor is connected with the main cutter disc through a main shaft; the auxiliary motor is hinged to the left end of a connecting rod B through a crank throw and a connecting rod C; the left end of the connecting rod B is hinged with a support base A; the middle of the connecting rod B is hinged to a support rod which is fixed on the cabin separating plate; the left end of a connecting plate A is hinged to the cabin separating plate; the right end of the connecting plate A is hinged to a support base B; the support bases A and B are fixed on the auxiliary cutter body; two groups of auxiliary cutters and the drive mechanisms of the auxiliary cutters are respectively positioned on two sides of the mud cabin; and the cutter is arranged on the auxiliary cutters. With the adoption of the square cross-section jacking-pipe tunneling machine, a majority of soils are cut by the main cutter disc and the remained soils are cut by the auxiliary cutters, and a cutting surface is a regular square cross-section.