510 results about "Hypotenuse" patented technology

A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided. The surgical saw blade may have a distal end having at least one pair of teeth configured to be adjacent to each other and each of the pair of teeth is configured as a right triangle each having a hypotenuse which is oriented at least one of towards and away from the centrally positioned long axis.

A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided.

A head suspension assembly couples a baseplate to a rotatable load through a planar triangular piezo microactuator for effecting hingeless rotation of the load. The microactuator expands, responsive to an excitation voltage, with greater magnitude in one direction than in another direction normal to the first direction, resulting in an angular movement of the hypotenuse thereby rotating the load. The upper surface of the microactuator is grounded to a bottom surface of the baseplate or load beam to position the microactuator lead connection surface closest to the load to facilitate trace routing. A load beam grounding surface may be raised to accommodate the microactuator and fix the lead connection surface on a common plane with the unraised surface to further minimize trace routing and provide access for bonding the trace to the load beam.

In a spread illuminating apparatus comprising a spot-like light source, and a light conductive plate, the light conductive plate is shaped into a pentagon which has two sides thereof substantially parallel to each other, and which includes, as a part thereof, a triangle having its base defined by an imaginary line connecting respective straightly opposing ends of the two parallel sides, and the spot-like light source is disposed at a side of the pentagon constituting one of two hypotenuses of the triangle.

A method and apparatus for producing with a gas discharge laser an output laser beam comprising output laser light pulses, for delivery as a light source to a utilizing tool is disclosed which may comprise a beam path and a beam homogenizer in the beam path. The beam homogenizer may comprise at least one beam image inverter or spatial rotator, which may comprise a spatial coherency cell position shifter. The homogenizer may comprise a delay path which is longer than, but approximately the same delay as the temporal coherence length of the source beam. The homogenizer may comprise a pair of conjoined dove prisms having a partially reflective coating at the conjoined surfaces of each, a right triangle prism comprising a hypotenuse face facing the source beam and fully reflective adjoining side faces or an isosceles triangle prism having a face facing the source beam and fully reflective adjoining side faces or combinations of these, which may serve as a source beam multiple alternating inverted image creating mechanism. The beam path may be part of a bandwidth measuring the bandwidths of an output laser beam comprising output laser light in the range of below 500 femtometers at accuracies within tens of femtometers. The homogenizer may comprise a rotating diffuser which may be a ground glass diffuser which may also be etched. The wavemeter may also comprise a collimator in the beam path collimating the diffused light; a confocal etalon creating an output based upon the collimated light entering the confocal etalon; and a detector detecting the output of the confocal etalon and may also comprise a scanning mechanism scanning the angle of incidence of the collimated light entering the confocal etalon which may scan the collimated light across the confocal etalon or scan the etalon across the collimated light, and may comprise an acousto-optical scanner. The confocal etalon may have a free spectral range approximately equal to the E95 width of the beam being measured. The detector may comprise a photomultiplier detecting an intensity pattern of the output of the confocal etalon.

An airtight RF coaxial connector with self-locking by snap-fastening is disclosed. The front end of the plug outer conductor is in the shape of continuous circles, forming an overall ring; the front end of the plug outer conductor is provided with a ring-shaped bulge with right angle trapezoid shaped cross section, the hypotenuse of the trapezoid being faced with the front side of the socket connector, and the right angle side of the trapezoid being positioned normal to the longitudinal axis of the socket connector on the back side of the connector; the inner part of the socket connector is provided with a groove provided with a sealing ring; and the distance between the mid-point of the ring bulge and the front contact surface of the plug outer conductor corresponds to that between the mid-point of the groove and the front contact surface of the socket connector. The abolishment of the four-way slits at the front end of the plug outer conductor not only increases the stiffness of the outer conductor, but also decreases the leakage of RF. When the connector is in connection, the conical surface of the plug outer conductor will automatically extrude the sealing ring on the inner side of the socket outer conductor so as to realize ideal sealing effects.

A ceramic / copper circuit board of an embodiment includes a ceramic substrate and first and second copper plates bonded to surfaces of the ceramic substrate via bonding layers containing active metal elements. In cross sections of end portions of the first and second copper plates, a ratio (C / D) of an area C in relation to an area D is from 0.2 to 0.6. The area C is a cross section area of a portion protruded toward an outer side direction of the copper plate from a line AB, and the area D is a cross section area of a portion corresponding to a right-angled triangle whose hypotenuse is the line AB. R-shape sections are provided at edges of upper surfaces of the first and second copper plates, and lengths F of the R-shape sections are 100 μm or less.

A building block includes two perpendicularly connected square frames, and a hypotenuse frame extended between outer edges of the two square frames. Each of the square and hypotenuse frames has an outer frame portion and an inner cross-shaped rib portion having a thickness twice as large as that of the outer frame portion. The cross-shaped rib portion divides a space enclosed in each frame into four equal divisions, which are four cavities on one of the two square frames; two diagonally opposite round connecting posts and two diagonally opposite cavities on the other square frame; and two diagonally opposite connecting protrusions and two diagonally opposite rectangular cavities on the hypotenuse frame, so that a plurality of the building blocks could be assembled together in different manners to form changeful shapes via engagement of the cavities with corresponding connecting posts or protrusions.

Light from a single source is divided among several illumination arms, each of which directs light via a multimode fiber bundle from the source to the wafer location. The arms are arranged circumferentially around a common illumination region, so that the region is illuminated from several directions. For each arm, light exiting the fiber bundle enters a turning prism, reflects off the hypotenuse of the prism, and is diverged in one dimension by a negative cylindrical surface on the exiting face of the prism. The beam then reflects off an anamorphic mirror and propagates to the illumination region on the wafer. The beam has an asymmetric footprint, so that it illuminates a nearly circular region of the wafer when viewed at normal incidence. The fiber bundle is at the front focal plane in the meridional dimension. The illumination region is at the rear focal plane in both dimensions.

A spade drill bit has a shaft and a spade head portion arranged on the shaft. The head portion has a rearward facing bottom edge, two longitudinal sides and a forward facing cutting edge. The cutting edge has a pointed, generally triangularly shaped tip and outer ends. The longitudinal sides of the head portion are bent along a bend in a direction of rotation of the drill bit during operation, so that the outer ends are bent forwards in the rotating direction. The bend runs from a first position at one of the longitudinal sides, closer to the bottom edge than to the cutting edge, and to a second position at the cutting edge between the outer end and the tip.

The invention discloses a method for connecting a titanium-aluminum alloy turbine with a 42CrMo steel shaft. The turbine members consist of a titanium-aluminum alloy turbine, an intermediate transitional shaft and a 42CrMo steel shaft, wherein the titanium-aluminum alloy turbine and the intermediate transitional shaft, the intermediate transitional shaft and the 42CrMo steel shaft are respectively combined in a friction welding mode. A friction welding contact part is designed into a mode that a lug boss and a concave groove are combined with each other, the axial cross sections of the lug boss and the concave groove are isosceles trapezoids, an included angle between a base and a hypotenuse of each trapezoid is 30-60 DEG, the length ratio of a top edge to the base of the trapezoid is 0.3-0.7, and the ratio of the flat area formed by the top edge of the trapezoid to the cross sectional area of the shaft is 0.01-0.1. According to the method disclosed by the invention, the bonding strength of the whole structure is effectively improved through increasing the effective contact area of the welding surface; after welded, all materials are ruptured in a titanium-aluminum parent material region; the turbocharging efficiency can be greatly increased; the engine transient responsiveness is enhanced; and the pollutant discharge is reduced; in addition, the method has a simple process and can be used for realizing mass production.

Provided is a broadband circularly polarized antenna using a metasurface. The antenna includes a lower substrate, an upper substrate stacked on the lower substrate, a radiator, which is located between the lower substrate and the upper substrate, has a rectangular patch shape in which two triangular removed parts are formed by removing opposite corners in a triangular shape, extends so as to have a predetermined width and length from one end of a hypotenuse of one triangular removed part of the triangular removed parts, and includes an extended strip having a feed hole formed therein, and the metasurface formed on an upper surface of the upper substrate and including a plurality of unit cells. The antenna has improved performance, such as a low profile, a broadband circular polarization characteristic, a high gain characteristic, and the like.

The invention discloses a surface plasmon resonance and bio-sensing-based water chip. A light source, a beam expanding lens, a polarizer, an isosceles right-angle prism, a quarter wave plate, a polarization analyzer, an imaging lens and a planar array CCD are arranged in turn along the light direction, wherein the hypotenuse surface of the isosceles right-angle prism is plated with a gold film; biological modification is performed on the gold film so as to form a bio-sensitive film subjected to specific adsorption with impurities in aqueous solution to be detected; the refractive index change of the impurities to the aqueous solution to be detected is converted into light intensity change of reflected light; and the refractive index change is detected by using the SPR effect on the interface between the gold film and the isosceles right-angle prism so as to detect the concentration of substances in the solution. When the water chip is used, the concentration of various substances in the water can be detected at one time, a light path and a mechanical structure are simplified and the water detection efficiency is improved.

A cutting saw blade for use with an oscillatory power tool used in surgical bone cutting procedures including a blade having a distal end provided with teeth whose tips are located on a tangent line perpendicular to the long axis of the blade. The teeth are configured substantially as right triangles with their hypotenuses facing either towards the center of the blade or away from the center of the blade. A central tooth can be optionally provided. The surgical saw blade may have a distal end having at least one pair of teeth configured to be adjacent to each other and each of the pair of teeth is configured as a right triangle each having a hypotenuse which is oriented at least one of towards and away from the centrally positioned long axis.

A ceramic / copper circuit board of an embodiment includes a ceramic substrate and first and second copper plates bonded to surfaces of the ceramic substrate via bonding layers containing active metal elements. In cross sections of end portions of the first and second copper plates, a ratio (C / D) of an area C in relation to an area D is from 0.2 to 0.6. The area C is a cross section area of a portion protruded toward an outer side direction of the copper plate from a line AB, and the area D is a cross section area of a portion corresponding to a right-angled triangle whose hypotenuse is the line AB. R-shape sections are provided at edges of upper surfaces of the first and second copper plates, and lengths F of the R-shape sections are 100 μm or less.

In carving a decorative groove (7) formed in V-shape cross section extending from inside to outside on a dial plate (2) of a timepiece as a decorative plate, the slant angle of an inner slanted side (7A) forming the V-shape of the decorative groove (7) is made gentler than an outer slanted side (7B) at an inner part of the spiral, so that action of light reflected on the flat surface of the dial plate (2) macroscopically becomes similar to the light reflected on a bulging surface to give the central portion of the dial plate (2) a bulging appearance, whereby a three-dimensional effect is provided by the decorative groove (7) even when the dial plate (2) is made of a thin plate, thereby adding depth and a luxurious touch or aspect.

The invention discloses a clamp which is used for milling a semilunar groove and can finish the milling and molding by once clamping. The clamp comprises a base; the base is provided with a locating shaft, a pair of lugs and a pair of storage platforms; the top of each lug is provided with a pressure plate groove, and each pressure plate groove is movably provided with a pressure plate; the base is also provided with a support and a hydraulic cylinder; the support is provided with a locating plate; a pair of clamping arms symmetrically arranged at the two sides of the lugs are movably arranged on the locating plate respectively by a spindle; the front part of each clamping arm is laid on the corresponding storage platform and provided with a clamping bevel; the end face of the rear part of each clamping arm is provide with a clamping groove; each clamping groove is penetratively provided with a clamping pin; a back-moving spring is arranged between the two clamping pins; a piston rod of the hydraulic cylinder is provided with a shim block; two bevel edges at the inside of the shim block are respectively embedded into the corresponding clamping grooves and are pressed against the clamping pins. The clamp of the invention greatly improves the milling precision and efficiency.

The invention discloses a dodecagonal segment for shield tunnel construction. Two long bevel edges which are both splayed are arranged on the edges of the two transverse ends of the dodecagonal segment, a long transverse edge, a short bevel edge, an inwards-sunken transverse edge, a short bevel edge and a long transverse edge are sequentially formed from one end to the other end of the edge, with a greater transverse length, in the edges of the two longitudinal sides of the dodecagonal segment, a short transverse edge, a short bevel edge, an inwards-sunken transverse edge, a short bevel edge and a short transverse edge are sequentially formed from one end to the other end of the edge, with a smaller transverse length, in the edges of the two longitudinal sides of the dodecagonal segment. The invention also discloses a segment lining structure assembled by dodecagonal segments, and the adjacent dodecagonal segments are embedded and limited. According to the dodecagonal segment with a specific shape, the shape has a mounting guide function, so that the segment can be easily positioned; the dodecagonal segment lining structure can be continuously tunneled and spliced, so that the construction efficiency and the overall lining rigidity are remarkably improved.

The invention relates to a large-span reinforced concrete orthogonal-diagonal open-web floor. An isosceles triangle mesh is provided on the periphery, a square open-web mesh 45 degrees angled to the periphery is arranged in the middle, the length a of the right-angle side of the isosceles triangle of the isosceles triangle mesh and the length a1 of the hypotenuse of the isosceles triangle meet the relation: a=a1*sin45 DEG, namely after the mesh a1 on the periphery is determined, the size a of the square open-web mesh along the 45-degree direction in the middle is determined; if a ratio of the length Lx of a building to its span Ly is greater than 1.5, the open-web mesh is placed in an orthogonal-diagonal manner; one-way force transmission of the floor can be changed into two-way force bearing (at 45 degrees), the floor can bear the force evenly, building materials are saved, and engineering cost is lowered; compared with the traditional large-span framed structures, the large-span reinforced concrete orthogonal-diagonal open-web floor saves concrete by 25% to 30% and steel by 20% to 25%; the open-web mesh plates are formed by open-web beams placed in the orthogonal-diagonal manner, the open-web part serves as an air conditioner and pipeline set layer of the floor, and floor thickness is greatly reduced.

A bumper beam mounting structure for absorbing an impact at a bumper beam and mounting members thereof in a vehicle minor collision is provided. The mounting structure has the mounting members attached to curved portions of right and left curved ends of the bumper beam. The mounting members are attachable to vehicle body members. The mounting members are in a right triangular shape in a plan view. A sloping portion corresponding to the hypotenuse is formed with a depressed portion for absorbing an impact.

A bevel edge wheel having a swarf clearance slot across the shaping face. The slot reduces the amount of hand removal of swarf from a processed lens blank.

A rug hold down corner has a planar plate connecting to a base beneath. The plate and base have triangular forms, preferably a right triangle and alternatively an isosceles right triangle. The triangular forms include two edges intersecting at a common point and a hypotenuse opposite the common point. The plate connects to the base using mechanical fasteners preferably upon the edges and alternatively upon the interior of the plate and the base. The plate may have various geometric patterns formed therein while the base generally remains solid and includes at least one felt pad, generally opposite the plate. The felt pad contacts a floor surface or other carpet beneath the rug. In a further alternate embodiment, the edges of the plate extend outwardly and downwardly so the edges extend over and down the periphery of a rug's corner.

The invention relates to an organic electro-luminescence device and the manufacturing method thereof in the technical field of electronic and semiconductor component. A double-layer insulating column is provided for on the pattern of the first electrode (2) of the device, the cross section of the line of the second layer (8) of the insulating column has the shape that its width is decreased from up to down, and its hypotenuse has two sequentially convergent angles alpha,beta, and alpha>beta. Then the organic functioning layer (5) and the second electrode (6) are deposited sequentially. The angle beta of the hypotenuse of the second layer (8) of the insulating column can increase greatly the tolerance of the evaporating angle and the evaporating thickness of the metal back electrode, and the organic functioning layer can be fully covered by the metal back electrode by using the different evaporating angles between the organic functioning layer and the metal back electrode.

The invention discloses a support piece structure for a petroleum pipeline support frame. the support piece structure comprises a connecting plate (9) and two triangular clamping plates symmetrically arranged at the upper end of the connecting plate (9), wherein the left side end of the connecting plate (9) is horizontally connected with a threaded column (2), an outer thread (1) is arranged at the left side end of the threaded column (2), and two rows of threaded through holes (6) arranged at the equal interval are also formed in the vertical plane of the connecting plate (9); each triangular clamping plate comprises a bottom plate (8) and a vertical right-angled clamping plate (4) perpendicularly arranged in the middle of the bottom plate (8), each bottom plate (8) is fixed on two sides of each vertical right-angled clamping plate (4) through matching of bolts (10) and the threaded through holes (6), and hypotenuses of the vertical right-angled clamping plates (4) of the two triangular clamping plates are arranged oppositely. The support piece structure is simple, convenient to mount and dismount, high in support strength, high in practicability, capable of being adjusted according to diameters of petroleum pipelines and applicable to supporting of the petroleum pipelines with various diameters.

The invention discloses a broadband one-way voice channel comprising an upper surface and a lower surface parallel to each other. A first reflector in the shape of an isosceles right-angled triangle is mounted on the upper surface. A second reflector in the shape of an isosceles right-angled triangle is mounted on the lower surface. The right-angle sides of the first and second reflectors are located on the upper surface and the lower surface, respectively; extension lines of hypotenuses of the first and second reflectors intersect; the upper surface and the lower surface are both provide with acoustic meta-surfaces, respectively. The broadband one-way voice channel has the advantages that reflecting paths of the first and second reflectors are simply utilized, super-thinness of the meta-surfaces and the abnormal reflection function are ingeniously utilized, full passage is allowed for acoustic beams under geometrically forward incidence, the acoustic beams under reverse incidence are fully reflected, and efficient one-way propagation is finally achieved; a barrier-free passage is formed between the first reflector and the second reflector, allowing fluid or a large object to pass through the barrier-free passage.

The invention discloses a tolerance test template for a master node of a ship hull and a detection method thereof. The tolerance test template is formed by surrounding a first angle side, a second angle side and a hypotenuse; a certain angle is formed between the first angle side and the second angle side; three graduation marks are arranged above the first angle side; the middle graduation mark is a theoretical graduation mark; and the graduation marks at the two sides are range graduation marks allowable to the tolerance test standards. The tolerance test template for the master node of the ship hull and the detection method thereof have the advantages that: the measurement of the node of the ship hull is facilitated, a basis is provided for angle measurement, and the tolerance test template is simple in structure and convenient in carrying.