1567 results about "Circular section" patented technology

PCT No. PCT / FR97 / 01617 Sec. 371 Date Jul. 28, 1998 Sec. 102(e) Date Jul. 28, 1998 PCT Filed Sep. 12, 1997 PCT Pub. No. WO98 / 10722 PCT Pub. Date Mar. 19, 1998An expandable osteosynthesis implant has branches (5) each connected at one end to a seat (7) which is pierced by an orifice (8), suitable for being slid from a posterior direction between the facing faces of two consecutive vertebrae in order to hold them a given distance apart and restore stability of the spinal column. According to the invention, the branches (5) and the seat (7) define a hollow cage (1) which, in a "rest" position, has an outside general shape that is a cylinder of circular section, and a portion at least of the inside volume (9) of the cage (1) towards the distal ends of the branches (5) is in the form of a circular truncated cone whose large base is towards the seat (7), which implant has at least three branches (5) and, inside the inside volume (9) at least one spacer (2) suitable for passing through the orifice (8) and the large base of the truncated cone.

An expandable osteosynthesis implant has branches (5) each connected at one end to a seat (7) which is pierced by an orifice (8), suitable for being slid from a posterior direction between the facing faces of two consecutive vertebrae in order to hold them a given distance apart and restore stability of the spinal column. According to the invention, the branches (5) and the seat (7) define a hollow cage (1) which, in a "rest" position, has an outside general shape that is a cylinder of circular section, and a portion at least of the inside volume (9) of the cage (1) towards the distal ends of the branches (5) is in the form of a circular truncated cone whose large base is towards the seat (7), which implant has at least three branches (5) and, inside the inside volume (9) at least one spacer (2) suitable for passing through the orifice (8) and the large base of the truncated cone.

A method and apparatus for use in a subterranean well is described. The apparatus typically includes a mandrel and a packing element. The mandrel may have an outer surface and a non-circular cross-section and the packing element may be arranged about the mandrel, the packing element having a non-circular inner surface matching the mandrel outer surface such that concentric rotation between the mandrel and the packing element is precluded. The apparatus may include slips having cavities to facilitate removal of the apparatus. The apparatus also may include a valve for controlling upward fluid flow through a hollow mandrel. The valve may include a flapper having at least one tab to engage at least one recession in the mandrel such that rotation between the mandrel and the valve is precluded when the valve is in a closed position. The apparatus may further include a central member which is releaseably attached to the mandrel by a release mechanism.

A throw-lever releasable mounting system for mounting a device in quick-release relation to a support member has a mounting base having a configuration fitting opposed angulated rail surfaces and having a locator key engaging a positioning slot of the rail. Each mounting base provides for mounting and stabilization of optics mounting rings. A locking platform projects from the mounting base and defines a locking opening having a circular hard metal insert therein that defines a receptacle receiving a resilient member and providing for location of the spline / spindle shaft of a rotatable locking plate. A locking plate of a throw-lever that is rotatable between locking and unlocking positions has angulated and curved cam surfaces for forcibly engaging correspondingly angulated surfaces of the rail to achieve cam energized precision locating and locking engagement with the rail. A non-circular section of a spline / spindle shaft of the throw-lever is receives a drive member in non-rotatable and linearly moveable relation. Resilient members are interposed between the drive member and the hardened insert and prevent free throw-lever movement at the release position thereof.

A throw-lever releasable mounting system for mounting a device in quick-release relation to a support member has a mounting base having a configuration fitting opposed angulated rail surfaces and having a locator key engaging a positioning slot of the rail. Each mounting base provides for mounting and stabilization of optics mounting rings. A locking platform projects from the mounting base and defines a locking opening having a circular hard metal insert therein that defines a receptacle receiving a resilient member and providing for location of the spline / spindle shaft of a rotatable locking plate. A locking plate of a throw-lever that is rotatable between locking and unlocking positions has angulated and curved cam surfaces for forcibly engaging correspondingly angulated surfaces of the rail to achieve cam energized precision locating and locking engagement with the rail. A non-circular section of a spline / spindle shaft of the throw-lever is receives a drive member in non-rotatable and linearly moveable relation. Resilient members are interposed between the drive member and the hardened insert and prevent free throw-lever movement at the release position thereof.

Exemplary embodiments of probes, apparatus, systems and methods can be provided which provide at least one electro-magnetic radiation to at least one sample. For example, a plurality of axicon lenses can be provided which are configured to provide the electro-magnetic radiation(s) having at least partially annulus shape. In addition or alternatively, at least one optical arrangement can be provided which is configured to forward at least one radiation to the sample therethrough having at least partially circularly-symmetric pattern. For example, at least one first portion of the radiation transmitted through a circular section of the pattern can have an optical path-length that is different from an optical path-length of at least one second portion of the radiation transmitted through at least one other section of the pattern.

The invention relates to a Y-shaped agitating pile drilling machine for reinforcing a soft land. A retracting oil jack drives three groups of agitating assemblies to move through a transmission rod A, a transmission rod B and a transmission rod C; a 120-degree angle is formed on a space by the three groups of the agitating assemblies; the section of a pile body formed by the Y-shaped agitating pile drilling machine is Y-shaped; the pile body of a Y-shaped agitating pile with the same volume is the pile body of the agitating pile, which has a circular section; and the bearing capability is greatly improved.

The present relates to an automatic insulin pump, which allows the rotary shaft only to rotate piston advancing means to remove vertical load applied to a rotary shaft, thereby improving durability thereof. The insulin pump includes: an injector having a syringe for containing insulin therein, and a piston inserted into the rear end of the syringe for providing the syringe with insulin discharge pressure; a housing having an injector receiving space formed in an appropriate position thereof, the injector receiving space having a partition wall formed at the rear end thereof; a rotary shaft having a non-circular section and a predetermined length; power supply means for rotating the rotary shaft at a predetermined speed; a push plate assembly for providing the piston with ahead power by pushing the piston, the push plate assembly having a disk part having a male screw formed on the outer circumferential surface thereof and a coupling hole axially coupled with the rotary shaft at the central portion thereof to allow for forward and backward movement of the rotary shaft, which passes through the coupling hole; and a hollow cylindrical type push plate case inserted into the injector receiving space of the rear end of the syringe, for the piston to pass therethrough, the push plate case having a female screw formed on the inner circumferential surface thereof to be coupled with the male screw of the disk part for allowing the disk part to carry out a spirally forward and backward movement.

A driving bit linking device in a box wrench includes a box wrench on a handle having a central bore, a pair of checking slots of different level in the opposing middle peripheries, an annular collar on a lower periphery and an annular groove in an upper periphery for disposing a retaining ring, a bottom spring disposed in the circular section of the central bore, a pair of compression springs wrapped on the outer periphery each including a transverse checking rod respectively inserted into the hexagonal section of the central bore through the checking slots and a cap wrapped on the box wrench and secured by the retaining ring. It is characterized that this device is capable of linking up a C type bit, a E type bit and even a double tips bit.

A hex key holder in one embodiment includes a larger block including a plurality of penetrating channels of circular section for retaining a plurality of first hex keys, and a curved arm extending forwardly from one side of the larger block, a smaller block including a plurality of penetrating channels of circular section for retaining a plurality of second hex keys smaller than the first hex keys, and a pivot for pivotably securing the smaller block between the larger block and the arm. The invention can facilitate access to the second hex keys by tilting the smaller block.

A rotating shaft with radial press device comprises a cylindrical rod and at least a friction part. The cylindrical rod extends from the rotating shaft and provides at least a milled face. The friction part is a ring piece composed of a circular section and an arched section and a gap is formed between the circular section and the arched section. An axial hole is surrounded by both of the circular section and the arched section for accommodating the cylindrical rod. Further, the arched section has a gradually reduced inner radius. As soon as the cylindrical rod is tightly pressed by the arched section, a position of standstill can be formed and when the milled face touches the free end of the arched section, the cylindrical rod can moves in a direction so that the milled face keeps contact with the free end of the arched section in a state of locking automatically.

The invention discloses a constant-resistance energy-absorbing anchor rod for strengthening a large-deformation rock body. The constant-resistance energy-absorbing anchor rod for strengthening the large-deformation rock body comprises a rod body, a constant-resistance energy-absorbing device, a nut and a tray, wherein the rod body is a smooth rod body with a round section; two ends of the rod body are provided with threads; the middle section of the rod body is wrapped by a plastic sleeve; the constant-resistance energy-absorbing device is arranged on the head part of the anchor rod and consists of a diameter-expanding cylinder, a conical cylinder, an anchorage device and a protective cover; the head of the rod body passes through the anchorage device to be connected with the diameter-expanding cylinder and the conical cylinder; and the protective cover is wrapped out of the diameter-expanding cylinder, the conical cylinder and the anchorage device. The constant-resistance energy-absorbing anchor rod can improve the capacity of the anchor rod in absorbing rock strain energy by utilizing the constant-resistance energy-absorbing device, is applicable to strengthening large-deformation surrounding rock of underground engineering or large-deformation rock creeping on the side slope under the high stress condition, has large ultimate elongation quantity, high and constant initial resistance and a simple structure, is convenient to manufacture and construct.

An evaporative type medium condenser without the using of conventional cooling fins comprises: characteristically a plurality of streamline cross sectional bare metal tubes disposed in parallel for medium coils to instead the conventional round sectional tubes thereof; a recycling water supply system having a plurality of water spray nozzles for spraying fine water particles onto the surface of coil tubes formed a water film continuously held thereon; a fan system to provide a wind flow blowing over the streamline tubes in a direction from a large head front portion of the streamline cross section to a gradual reduced rear portion thereof and to provide a low pressure area thereat so as to speedy the evaporation of the water film on the surface of the coils tubes for improving a high cooling efficiency to reach a high E.E.R. therefore.

The present invention relates to a method for measuring wool fibre fineness and its system. Digital camera head (CCD) is adopted to convert the amplified fibre image into digital image, and transfer it into computer to mare real time processing to obtain fibre outline and calculate single fibre fineness, then it counts up the data of average fineness and fineness distribution of all the measured fibres. In said ivnention, general light source is used and the proper alogirhtm and software are designed with can measure animal fibre with the measurement range of 4-300 micrometers, and its measurement speed is 140 fibre / sec.

In an adjustable rearview mirror, especially an outside mirror, for a motor vehicle, whereby a first element (1) is affixable to the vehicle and a second element (2), rotatably attached to the first element (1), has or forms a mount for a mirror (4), whereby the two elements (1, 2) are designed as dish-shaped elements (1, 2) that nest with one another at least partially and are guided or bear against one another via outside and inside areas of contact forming a segment of a spherical surface and whereby a drive (6) is provided between the first and the second element (1, 2) is proposed, characterized in that the outer element (2) is designed on part of its inner surface with a gear-tooth system extending along a circular section of the inner surface of the outer element (2), with which a pinion (8) of a drive (6) mounted in the inside of the inner element (1) meshes for adjustment of the outer element (2) relative to the inner element (1), by which means can be achieved with a simple construction a design that is largely insensitive to vibrations.

The invention belongs to the technical field of engineering blasting and ammunition engineering. A circular discontinuous energy concentrating jet flow cracker comprises a round tube-shaped case, an end cover and a detonating unit; explosives are mounted inside the cavity the round tube-shaped case; the detonating unit is leaded out of the case through a hole formed in the end cover; the outer round surface of the round tube-shaped case is provided with circular grooves which are parallel to one another, and the circular grooves are in a conical or semicircular shape and form circular protrusions in the corresponding shape on the inner wall surface of the cavity of the round tube-shaped case; the width of the circular grooves is 1 / 2-1 / 5 as much as the outer diameter of the case, the length of the generatrix of the conical cross sections or the diameter of the semicircular cross sections of the circular grooves is 1-7 times larger than the thickness of the wall of the case, the apex angle of the conical cross sections is 40-120 degrees, and the distance between the central axises of every two neighboring circular grooves is 1.5-40 times as large as the width of the circular grooves. The circular discontinuous energy concentrating jet flow cracker impacts a target at a high speed through the high-temperature, high-pressure and energy-concentrated discontinuous jet flows which are generated by the case, is simple in structure, convenient to machine and use, small in amounts of explosives used in a single blasting, low in vibration, low in production cost and capable of ensuring the safety and meeting various usage requirements.

This invention involves a radially expandable stent that has wire wound circular sections that are cojoined to create a cylinder by a series of single strand wire hinges. The hinges are situated to provide the stent created by the expanded sections with enhanced flexibility without sacrificing the overall support strength of the stent.

The invention provides a swelling pressure composite forming method for a large-section-difference special-shaped section pipe fitting and relates to a forming method for a large-section-difference special-shaped section pipe-shaped part. The swelling pressure composite forming method comprises the main steps that 1, the perimeters and the equivalent diameters of a plurality of cross sections on the to-be-formed large-section-difference special-shaped section pipe fitting are determined, and the structure of a swelling pressure composite forming mold and the inner cavity size and initial position of a side extrusion mold are determined; 2, an equal-diameter circular-section pipe blank with a certain length is cut and put into the swelling pressure composite forming mold; 3, the equal-diameter circular-section pipe blank is filled with a pressure medium with a certain pressure through a pressure medium inlet, and a variable-diameter circular-section pipe blank is obtained through swelling; 4, the side extrusion mold is driven to extrude the variable-diameter circular-section pipe blank, and the large-section-difference special-shaped section pipe fitting is obtained; and 5, the pressure is released, and after the swelling pressure composite forming mold is opened, the formed pipe fitting is taken out. The swelling pressure composite forming method is used for forming large-section-difference special-shaped section pipe fittings.

The disclosed are amorphous carbon particles extracted from combustion ash of petroleum coke, each of which provides a non-circular section, and which have a weight depreciation rate after 60 minutes' standing at a maintaining temperature of 500° C. in the presence of air being in the range of less than 30%, and also have a mean average particle size of 50-1 μm; and composite material in which the amorphous carbon particles are blended in a matrix of organic material or inorganic material. Thus, it becomes feasible to obtain economically amorphous carbon particles which excel in rigidity, strength and have particularly small specific surface area and pore volume, and to provide a composite material of which characteristics are improved by blending the amorphous carbon.

The invention relates to wind speed and direction measurement technology, and aims to provide an anemoclinograph wind meter with high precision, good stability and low cost. The anemoclinograph wind meter comprises a wind measuring head and a signal processing device, wherein the wind measuring head consists of a shell, pull pressure sensors and a support bar; a horizontal circular section in the hollow shell is distributed with three pull pressure sensors with the same specification, which are symmetrically distributed at an interval of 120 degrees around a center of a circle; one end of each pull pressure sensor is fixed on the inner wall of the shell, while the other end is fixed on the support bar; the shell is not contacted with the support bar; wind pressure born by the shell is gathered on the support bar through the sensors, so the resultant force of the pull pressure of the sensors corresponds to the wind pressure; and the pressure direction indicates the wind direction, and the pressure and the wind speed have a certain functional relation which depends on the shape and size of the shell and can be calculated through a fluid mechanics theory or obtained through wind tunnel tests. The anemoclinograph wind meter can be used for wind generating systems, and also can be applied to the fields such as meteorology, transportation and the like.

The invention discloses a cable mechanical de-icing device. Two hanging frames of the traveling mechanism are fixed on the top surface of a main body frame, and traveling wheels and traveling wheels of V type groove wheel are respectively on the hanging frames. A traveling chain wheel is fixedly mounted on the outside of the rear traveling wheel. A rear end of an H shaped bracket of the de-icing device is articulated with the main body chassis; a de-icing wheel shaft, a double-couple de-icing device, and a de-icing chain wheel; and the outer edge of the de-icing wheel is a de-icing tooth. A middle transverse rod of the H shaped bracket is supported by upper and lower support rods connected with a screw assembly in an inclined manner, so that the pitch angle of the de-icing wheel can be adjusted. An outer end of a hub of the de-icing wheel is provided with a convex ram. An ice scoop is mounted in front of the front hanging frame. Motors and a storage battery are fixed at the bottom of the main body frame. The power is transmitted by the chain wheels and the chains. The control mechanism is a control box, and a servo controller therein is connected with two motors to adjust the traveling speed of the device and the rotation speed of the de-icing wheel. An obstacle sensor connected with the control box is arranged in front of the bracket. The device is adapted to the de-icing work of the circular-section common high voltage transmission line below 110kV. The device has simple structure, easy operation and convenient portability.

The invention relates to a rail vehicle body of the type comprising a grid structure, itself comprising longitudinal elements and cross elements interconnected at nodes, and supporting outer and inner coverings. Longitudinal and cross elements are circular section tubes. At at least some of its nodes, the grid structure comprises connections for interconnecting longitudinal and cross tubes of circular section. These connections have longitudinal and cross circular section sleeves which receive longitudinal and cross tubes respectively. Longitudinal tubes pass right through the connections made of longitudinal and cross tubes.

The invention comprises a series of spans of column shaft (1) with a frustoconical shape, each span integrating two or more parts (2) and (3) with a polygonal or circular section formed with pieces prestressed in a bed in the factory, with centered or slightly deviated prestressing (4) and non-prestressed reinforcement (5) in the perimeter of the section or fibers, attached by means of wet or dry longitudinal joints (6), rotated in plan view or not, and transverse joints (7) which can be at different levels and provide continuity or not to the general prestressing, for a joining by means of steel bars (12), and in the case of the attachment to the foundation with direct positioning of the starter bars at the time said foundation is built, or by means of jacket tubes which will subsequently receive the mentioned bars (16).

A bottle bag includes a body made of neoprene-filled temperature-maintaining cloth. The body includes a front wall and a rear wall, delimiting a top opening and at least two compartments adapted to receive bottles. A bottom portion is fixed to a bottom end of the body and made of neoprene-filled temperature-maintaining cloth. The bottom portion includes at least two substantially circular sections and a neck section between a pair of the at least two substantially circular sections. The bottom portion of the bottle bag is flat enough to allow the bottle bag to stand on its own after the bottles have been placed into the compartments of the bottle bag while providing a longer temperature-maintaining effect.

The present invention makes use of the spherical sectors, semi-spheres, cylindrical or circular sections of a solid object or the surface of an object, and breaks them into components. If no such spherical sectors, semi-spheres, cylindrical or circular sections are available on the object, or the existing ones cannot be used for any reason, one can create some adequate ones under allowable circumstances. The puzzle will come into being when any of its broken down components can be shared with (interchanged with components of) other flat or spherical or circular or cylindrical surfaces. The idea of the present invention is rather simple, however it may be applied in a versatile manner.

The present invention relates to a lightweight bidirectional hollow core slab, and a doughnut-shaped hollow core body which may be advantageously used in the construction of a bidirectional hollow core slab. The doughnut-shaped hollow core body according to the present invention includes an outer case formed in a generally doughnut shape, wherein a hollow portion with a circular section is formed in the center thereof and corners are rounded with curved surfaces. The bidirectional hollow core slab according to the present invention is made by stably locating the doughnut-shaped hollow core bodies in concrete in such a manner that the doughnut-shaped hollow core body is restrained and mounted in steel bar cages or on the upper and lower steel bars.

Small aperture (pinhole) intraocular implant to increase depth of focus comprising a diaphragm juxtaposed to the front surface of a lens implanted previously, having its anterior surface convex and its posterior surface concave. The diaphragm is held in position by inserting engaging means in the ciliary sulcus.It is proposed that said diaphragm is opaque to a visible light spectrum and transparent to light in the infrared range and is equipped with passage means of visible light in its central region, such as a through hole whose diameter is between 1 mm and 2.5 mm.The constriction of the incident light rays increases the depth of focus, featuring a pinhole effect. The engagement means may be provided by two handles shaped with curved proximal ends joined to the peripheral edge of said diaphragm and having substantially circular section with a diameter between 80 μm and 800 μm or two handles of the same material as the diaphragm and constituting an extension of this edge, or even one elongated platform whose center is located in the small-diameter circular opening.

An ion guide includes a plurality of curved electrodes and an ion deflecting device. The electrodes are arranged in parallel with each other and with a central curved axis, the curved central axis being co-extensive with an arc of a circular section having a radius of curvature, each electrode being radially spaced from the curved central axis, wherein the plurality of electrodes define a curved ion guide region arranged about the curved central axis and between opposing pairs of the electrodes. The ion deflecting device may include a device for applying a DC electric field to two or more of the electrodes in a radial direction. The ion deflecting device may include a pair of curved, parallel ion deflecting electrodes, which are in addition to curved electrodes utilized for applying an RF ion guiding field.