63results about How to "Constant diameter" patented technology

Catheters having a tapered, atraumatic distal tip are provided. In one embodiment, the outer surface of the distal portion of the catheter has a generally non-cylindrical and substantially triangular cross-sectional configuration. The inner surface cross-sectional configuration of the distal portion of the catheter may match the outer surface, or it may have a cylindrical or oval configuration. The terminal orthogonal surface of the distal catheter tip is chamfered or rounded or contoured. In another embodiment, inner and/or outer catheter surfaces have a three dimensional surface conformation and may be dimpled or grooved. The grooves may be generally liner or curved or helical or in a spiral configuration. Dimpled and/or grooved surface discontinuities may be provided in connection with and in addition to lubricious coatings, surfaces, and the like.

Apparatus for providing optical radiation, which apparatus comprises an optical fibre (5) having a core (3), a first cladding (1) and a second cladding (2), in which the first cladding (1) has a substantially constant diameter (9) in its cross-section. The first cladding (1) can be non-circular. Advantages include more reliable cleaving, joining and splicing.

A container for vending single servings of beverages and snack foods, includes a liquid-impermeable wall providing a compartment for the beverage. An inside section of the wall defines a recess isolated from the compartment and open to the container exterior at the bottom. Near the upper end of the recess, the inside wall diameter is decreased in steps, to frictionally engage a leading edge region of a snack-food cartridge or other product inserted into the recess. A pull tab between the cartridge and the recess is accessible to remove the cartridge. Alternatively, a cartridge wrapper can be shaped to provide a pull tab component. The preferred snack-food cartridge includes a compliant thin film or foil wrapping surrounding a stack of cookies, a bar, or other snack food. In alternative arrangements, the container has a vertical slot for viewing a cartridge inserted into the recess, or is formed with horizontal top and bottom wall sections. Further alternatives involve a refrigeration package or chilled cartridge insertable into the recess to cool the beverage.

A wind turbine includes a nacelle with any manner of associated power generation equipment. The nacelle is mounted atop a tower having a base end configured for support on a ground level foundation. A tower support system provides support to the tower and includes an axially extending circumferential sleeve mounted around the tower at a location between the base end and the nacelle. A plurality of support legs are disposed around the sleeve, with each support leg having a first end rigidly affixed to the sleeve and an opposite foot end configured for mounting to a ground level footing. The support legs extend from the sleeve with a length and at an acute extension angle relative to a longitudinal axis of the tower so as to provide a designed degree of vertical and lateral support around the circumference of the tower.

A latch device releasably secures a container to a support surface. The device comprises a housing, a latch, interchangeable spring sets, and a pin. The housing comprises an upper shell and an inner coil-receiving cavity. The shell defines a latch-receiving cavity. The latch comprises an upper latch end and a coil-engaging portion. The coil-engaging portion comprises coil-aligning structure. At least one compression coil is received within the coil-receiving cavity and placed into engagement with the coil-engaging portion so as to bias the upper latch end exterior to shell via the latch-receiving cavity. The coil-aligning structure enhances axial alignment of each coil during coil compression. The pin pivotally connects the latch to the housing for enabling pivotal movement of the latch under selectively varied spring resistance for targeted applications. The coil(s) thus enable the user to vary latching forces during latching securement and release depending to the targeted loads and conditions.

A method of manufacturing a coated medical device, such as a medical guide wire, including at least applying a first colored coating to at least a first portion of an outer surface of a medical guide wire, securing a first end of the medical guide wire, and for each a designated quantity of turns, turn a second end of the medical guide wire upon a longitudinal axis of the medical guide wire. The method of manufacturing also includes securing the second end of the medical guide wire, blocking at least a first portion of the coated surface of the medical guide wire, applying a second contrasting colored coating to at least a second, unblocked portion of the outer surface of the medical guide wire and releasing the first end and the second end of the medical guide wire to display at least one spiral marking formed along a length of the medical guide wire.

A laser system for generating optical pulses at an operating wavelength of the laser system. The system has an optical resonator comprising first and second reflectors, and a tapered optical fiber disposed between the first and second reflectors. The tapered optical fiber has a core which has a tapered input section which tapers from single mode to multimode at the laser operating wavelength, an inner section of substantially constant diameter capable of supporting multiple modes at the laser operating wavelength and a tapered output section which tapers from a first diameter to a second diameter that is smaller than the first diameter.

An irradiation field forming device for forming an irradiation field when a specimen is irradiated with a charged particle beam generated by an accelerator, the irradiation field forming device includes: a range shifter arranged on a beam axis of the charged particle beam for regulating an irradiation depth of the charged particle beam; and two or more than two converging electromagnets arranged in the downstream of the range shifter for regulating a beam diameter of the charged particle beam which is enlarged by the range shifter to a constant value.

A shaft structure including: a male component having male spline parts and male spline bottom parts on an outer peripheral part; a female component having female spline parts and female spline bottom parts on an inner peripheral part configured to allow the male component to be slidably inserted in an axial direction; and an elastic member arranged on the male component covering a surface of the outer peripheral part of the male component, wherein, in an initial state where the male component is inserted into the female component, the female and male components have first gaps between: sides of the female spline parts; and sides-facing portions of the elastic member, and when the male component is rotated, a time from the initial state to a state where the sides of the female spline parts abut on the portions of the elastic member, has predetermined time differences along the axial direction.

A cooling system for cooling an interbore bridge of a cylinder block of a water cooled engine, the interbore bridge having a top surface and a central region of minimum width; the cylinder block having a water jacket; the cooling system including at lest one water passage extending from the top of the interbore bridge adjacent the central region to the water jacket. A method of forming the cooling system, and a cylinder block so formed, are also disclosed.

The invention relates to a method for producing a plastic capillary mat (1), in which a welding zone (19) at the axial end of a capillary (3) is radially welded to a manifold (2), wherein first Heating the weld zone (19) of the capillary (3) and the transition zone (7) adjacent to the weld zone (19) while increasing the outer diameter (D4) of the transition zone (7) and then removing the weld zone (19) Press onto the manifold (2). In order to improve the mechanical load-bearing properties of the capillary mat, the invention proposes to form a predetermined outer contour in the transition region ( 7 ) during the mutual pressing.

The invention provides a V-shaped arranged double-acting type Stirling engine, relates to a Stirling engine and particularly relates to a V-shaped arranged optical energy and heat energy engine. The V-shaped arranged double-acting type Stirling engine is formed by an engine base, a machine body, a cylinder sleeve, a crank shaft and a heat cavity air cylinder, and is characterized in that the machine body is arranged on the engine base; two rows of cavity bodies are machined on the machine body to be arranged in a V shape; the central line is crossed to a crank throw axial center of the crank shaft mounted at the lower part of the machine body; a moving device is arranged at the upper parts of the cavity bodies of the machine body through the cylinder sleeve; the lower part of the moving device is connected with the crank shaft; the heat cavity air cylinder is arranged on the moving device at the upper part of the machine body; a heating device is arranged on the heat cavity air cylinder and the machine body; and a work medium system is further arranged between the heating device and the moving device. The V-shaped arranged double-acting type Stirling engine has the characteristics of novel structure, simple structure, simplicity in machining, small volume, light weight, increased power and the like, so that the novel V-shaped arranged double-acting type Stirling engine which integrates the economical efficiency and the economical efficiency is provided.

Purge valves that are manually turned ON but are automatically or electrically turned OFF as the fuel cell's production of electricity reaches a predetermined level, e.g., steady state or thereabout are disclosed. The purge valve may be opened at system start-up, or may be opened at system shut-down so that the purge valve is armed and the fuel cell system is purged at the next start-up. Also disclosed is an integrated fluidic interface module that contains various fluidic components including one of these purge valves. The integrated fluidic interface module can operate passively or without being actively controlled by a processor. Methods of operating a fuel cell system, wherein the fuel cell system is purged at system start-up, are also disclosed. The purging automatically stops when the anode plenum is fully purged and replaced with fuel.

The structure is improved so that a bearing is disposed in a place other than pump shafts, thereby improving the smoothness of the slide movement of a moving body which is a large structure, and the durability of slide supporting means (bearings or the like) for it. In a reciprocating pump having: a pump body 1 including a suction path 12 and discharge path 13 for a fluid; a pair of diaphragms 2 which are airtightly fixed to both end portions of the pump body; pump shafts 15 which are attached to tip end portions of the diaphragms 2; a pair of pump flanges 4 which slidably support the pump shafts 15, and which are integrated with the pump body 1 through connection bodies 16 that are placed outside the diaphragms 2; connecting rods 18 which connect connecting plates 17 attached to projecting tip-end portions 15B that are projected from the pump flanges 4 in the pump shafts 15, to each other in a state where the connecting rods are passed through the pump flanges 4 to be placed outside the diaphragms 2; and a cover cylinder 6 which is disposed between the pair of pump flanges 4, and which surrounds the connecting rods 18, the connecting rods 18 are slidably supported through slide bearings 27 which are supported by the pump flanges 4.

A high frequency (HF) rotary joint including a rotor and a stator is disclosed. The rotor is connected to the stator by a high frequency connection via a λ/4 line. The rotor, moreover, is mounted in the stator utilizing at least one radial aircushion bearing and at least one axial aircushion bearing. The bearings prevent contact between the rotor and the stator.

The invention discloses a needleless electrostatic spinning device. The device comprises a receiving ball, spinneret orifice pipes, an umbrella cover recovery device, a liquid storage tank, a tank cover, liquid supply pipes and liquid supply pumps, wherein the concave surface of the umbrella cover recovery device faces the receiving ball, the receiving ball is located at the upper part of the umbrella cover recovery device, the spinneret orifice pipes are arranged on the inner side of the concave surface of the umbrella cover recovery device, a plurality of spinneret orifices are densely distributed on pipe bodies of the spinneret orifice pipes, the liquid supply pumps are connected with the spinneret orifice pipes through the liquid supply pipes, and the tail ends of the spinneret orificepipes are closed; a backflow gap is formed between the liquid storage tank and the tank cover and used for allowing a solution recovered by the umbrella cover recovery device to flow into the liquidstorage tank. In the specific working process, the surplus solution flows back to the liquid storage tank from the backflow gap through the umbrella cover recovery device and continues to be input into the liquid supply pipes by the liquid supply pumps, so that recycling of the spinning solution is achieved. In the whole process, the spinning solution cannot make contact with air, and accordingly,stable concentration of the spinning solution is maintained, and the diameter of a spinning fiber remains unchanged.

The present invention relates to a method for manufacturing an optical preform by employing an internal vapor deposition process. The method uses an energy source and a substrate tube, wherein the energy source is movable over the length of the substrate tube between a point of a reversal at the supply side and a point of a reversal at the discharge side.

A band clamp comprises a band for holding a long member and a lock that has a latching pawl provided at one end of the band, for effecting a lock when the band is wound about the outer periphery of the long member. An engagement part for engaging the latching pawl is formed at only one location in the longitudinal direction of the band, and the position of that latching part is a position that establishes the length of the winding of the band about the long member at a prescribed length.

The present invention proposes a pulverized coal injection lance (10) for feeding pulverized coal from a rear end of the lance (10) to a front end (11) of the lance (10). The lance (10) comprises an outer pipe (12) for conveying combustive gas, and an inner pipe (14), coaxially arranged within the outer pipe (12), for conveying pulverized coal. The inner pipe (14) forms a separation wall for separating the pulverized coal from the combustive gas. The separation wall is at least partially discontinued in a region near the front end (11) of the lance (10), thereby forming a mixing region (16) within the pulverized coal injection lance (10). According to an important aspect of the invention, the outer pipe (12) and the inner pipe (14) have substantially the same length and wherein the inner pipe (14) comprises at least one lateral opening (18, 20) for allowing pulverized coal and combustive gas to come into contact within the pulverized coal injection lance (10) near the front end (11).

A turbine stage in a turbomachine comprising ring sectors (20) arranged about a turbine impeller (18), and an annular support (50) supporting the ring sectors and attached to a turbine casing (22), this annular support being able to be deformed elastically in the radial direction to cushion at least a portion of the deformations of the turbine casing in operation.

A flechette for use with a gun barrel having a tapered bore with a diameter at the initial bore section greater than the diameter at the emergent bore. The flechette includes a body constructed of a ductile material and having an elongated axis aligned with the axis of the tapered bore when positioned in the load end of the bore. The body also includes a cylindrical bulkhead as well as a bourrelet that are axially spaced from each other along the flechette and have an outside diameter substantially the same as the diameter at the initial bore section of the tapered bore. An elongated boom is attached at the tail end of the body while a penetrator is attached at the forward end of the body. Upon launch, both the bulkhead and bourrelet are compressed radially inward by the bore reduction so that the body is substantially cylindrical upon exit from the discharge end of the bore.