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Endoscopic Methods And Devices For Transnasal Procedures - Patent 8146400
The present invention relates generally to medical apparatus and methods and more particularly to devices and methods that are useable to facilitate transnasal insertion and positioning of guidewires and various other apparatus at desiredlocations within the ear, nose, throat, paranasal sinuses or cranium.BACKGROUND OF THE INVENTION Functional endoscopic sinus surgery (FESS) is currently the most common type of surgery used to treat chronic sinusitis. In a typical FESS procedure, an endoscope is inserted into the nostril along with one or more surgical instruments. Thesurgical instruments are then used to cut tissue and/or bone, cauterize, suction, etc. In most FESS procedures, the natural ostium (e.g., opening) of at least one paranasal sinus is surgically enlarged to improve drainage from the sinus cavity. Theendoscope provides a direct line-of-sight view whereby the surgeon is typically able to visualize some but not all anatomical structures within the surgical field. Under visualization through the endoscope, the surgeon may remove diseased orhypertrophic tissue or bone and may enlarge the ostia of the sinuses to restore normal drainage of the sinuses. FESS procedures can be effective in the treatment of sinusitis and for the removal of tumors, polyps and other aberrant growths from thenose. The surgical instruments used in the prior art FESS procedures have included; applicators, chisels, curettes, elevators, forceps, gouges, hooks, knives, saws, mallets, morselizers, needle holders, osteotomes, ostium seekers, probes, punches,backbiters, rasps, retractors, rongeurs, scissors, snares, specula, suction cannulae and trocars. The majority of such instruments are of substantially rigid design. In order to adequately view the operative field through the endoscope and/or to allow insertion and use of rigid instruments, many FESS procedures of the prior art have included the surgical removal or modification of normal anatomicalstructures. For example, in many
Modular Spring Retainer And Method For Metal Forming Dies And The Like - Patent 8146399
The present invention relates to metal forming dies and the like, and in particular to a modular spring retainer and associated method. Metal forming dies, such as stamping dies and the like, are well known in the art. Progressive metal forming dies are unique, very sophisticated mechanisms which have multiple stations or progressions that are aligned longitudinally, and aredesigned to perform a specified operation at each station in a predetermined sequence to create a finished metal part. Progressive stamping dies are capable of forming complex metal parts at very high speeds, so as to minimize manufacturing costs. Heretofore, the dies used in metal forming presses have typically been individually designed, one of a kind assemblies for a particular part, with each of the various components being handcrafted and custom mounted or fitted in an associated dieset, which is in turn positioned in a stamping press. Not only are the punches and other forming tools in the die set individually designed and constructed, but the other parts of the die set, such as stock lifters, guides, end caps and keepers, camreturns, etc., are also custom designed, and installed in the die set. Current die making processes require carefully machined, precision holes and recesses in the die set for mounting the individual components, such that the same are quite laborintensive, and require substantial lead time to make, test and set up in a stamping press. Examples of prior art die spring assemblies which require precise machining to mount the same in an associated die plate are illustrated in FIG. 1. Such metalforming dies are therefore very expensive to design, manufacture and repair, or modify. Consequently, a modular spring retainer of the type disclosed herein would be clearly advantageous in simplifying metal forming die constructions and reducing the cost in designing, manufacturing and repairing the same.SUMMARY OF THE INVENTION One aspect of the present invention is a metal
Support Arrangement Of Roll In Fibrous-web Machine - Patent 8146397
CROSS REFERENCES TO RELATED APPLICATIONS This application claims priority on Finnish Application No. FI 20075476, Filed Jun. 21, 2007, the disclosure of which is incorporated by reference herein.STATEMENT AS TO RIGHTS TO INVENTIONS MADE UNDER FEDERALLY SPONSORED RESEARCH AND DEVELOPMENT Not applicable.BACKGROUND OF THE INVENTION The present invention relates to a support arrangement of a roll in a fibrous-web machine. The invention generally relates to supporting a bearing of a roll of a fibrous-web machine or an equivalent shaft to the frame structure. Particularly,the invention relates to a roll of a device or a section of a paper or board machine and supporting its bearing to the frame structure when external force applies to the roll. Such external force can be caused e.g. by another roll, a support fabric or aweb reel. The vibration of rolls is a great problem with present-day fibrous-web machines, inter alia, due to the increase in operating speed. Traditionally, the rolls are fastened in the foundation as rigidly as possible, this is particularly the casewith the carrier rolls of a slitter-winder. Specifications WO9849394, WO0004227 and WO0004228 describe arrangements in which in the bearing housing of a roll of a paper machine has been arranged a tunable vibration damper. In the arrangements presented in the specifications, the tuningof the frequency of the vibration being damped has been implemented by changing the position of the mass in the vibrating rod or, alternatively, by changing the volume of the mass. When the access to the damper is relatively easy, the tuning can bechanged even during the operation of the machine. In these, the damper is outside the roll, whereby it, inter alia, occupies considerable space. This kind of an arrangement does not always provide good enough damping. FI patent 94458 describes a method and apparatus for controlling the vibration of the rolls of a paper machine. In the method, the positions of the critical spe
Crust Bending Apparatus - Patent 8146398
1. Field of the Invention The present invention generally relates to a machine, and in particular to a crust bending apparatus. 2. The Related Arts An electrical connector plays a role of fast interfacing and is widely used in electronic products. Various electrical connectors comprise an insulation plastic housing that partly enclose conductive terminal pieces with the terminal piecesembedded therein for secured retention. Often, a portion of each of the terminal pieces that is not to be enclosed by the plastic of the housing is clamped by a mold and then molten plastic is filled into the mold. An integrated electrical connectorcan thus be formed after the molten plastic solidifies. An electrical connector of this kind comprises an insulation housing and a set of terminal pieces received and fixed in the housing. The terminal set may include signal terminals that are receivedin the insulation housing and at least one pair of switching terminals. The insulation housing of the electrical connector is often enclosed by a metal crust. The metal crush provides protection and structural reinforcement to the outside of theinsulation housing. The metal crust often comprises a resilient holding portion, which provides a resilient abutment for securely holding an external plug, so that the plug can be securely coupled to the connector without undesired or unexpectedseparation. Conventionally, the metal crust is applied to the insulation housing of an electrical connector with a jig. Due to the progress of technology, various miniaturized electrical connectors are available now. The application of the metal crust tothe insulation housings of such miniaturized connectors is still carried out with human hands. A metal plate is first bent by hands and then the bent plate is set to enclose the insulation housing. Since the size of the housing of a miniaturizedconnector is tiny, bending and enclosing a metal crust around the housing is extremely difficult. This lea
Multi-tool Technology - Patent 8141407
FIELD The invention relates generally to tools for industrial presses or other fabrication equipment. More particularly, the invention relates to multi-tools for turret presses, single-station presses, other industrial presses, or other fabricationequipment.BACKGROUND Sheet metal and other workpieces can be fabricated into a wide range of useful products. The fabrication (i.e., manufacturing) process commonly requires various bends and/or holes to be formed in the workpieces. The equipment types used infabricating sheet metal and other workpieces include turret presses and other industrial presses (such as single-station presses), Trumpf style machine tools and other rail type systems, press brakes, sheet feed systems, coil feed systems, and many othertypes of fabrication equipment adapted for punching or pressing sheet materials. The present invention provides multi-tools that can be used with many types of fabrication equipment. Turret presses are one type of machine tool on which multi-tools have been used. Following is a brief background discussing multi-tools inthe context of a turret press. The various multi-tool embodiments of the present invention, however, can be used with any type of fabrication equipment, such as single-station presses or other presses not having turrets. Turret presses have found wide use in forming sheet metal and the like. These presses commonly have an upper turret that holds a series of punches at locations spaced circumferentially about its periphery, and a lower turret that holds a seriesof dies at locations spaced circumferentially about its periphery. Commonly, the turrets can be rotated about a vertical axis to bring a desired punch and die set into vertical alignment at a work station. By appropriately rotating the upper and lowerturrets, an operator can bring a number of different punch and die sets sequentially into alignment at the work station in the process of performing a series of different pressing operations.
Holder For Press Dies - Patent 8141408
1. Technical Field The present invention generally relates to tool holders and, more particularly, to holders for elongated press dies used with metal bending presses. 2. Background Information Metal bending presses may be used to bend sheets of metal between upper and lower dies. A variety of presses are known in the art. Each has a pair of die holders or beams for holding the upper and lower dies in working positions. Differentpresses have different mechanisms for holding the dies. FIGS. 1A, 1B, 2A, and 2B depict exemplary dies 2 and 4 (or portions of dies) known in the art. Dies 2 and 4 are provided in a variety of cross sectional shapes and lengths but each includes a working end and a receiving structure 6 that is heldby the beam of the press. Die 2 is an upper die while dies 4 are lower dies. Each receiving structure 6 of dies 2 and 4 of FIGS. 1A, 1B, and 2B defines a pair of continuous grooves 8 that cooperate with the press to position and hold dies 2 and 4 inthe press. Dies 2 and 4 are hardened steel and relatively heavy. Long dies are especially unwieldy and can be difficult to load into the press by a single operator. Each die 2 and 4 is expensive and, although manufactured from hardened steel, issusceptible to nicks, dings, or scratches that can ruin the die. Dies 2 and 4 are currently stored lying sideways on a table or in a drawer. Storing dies in these manners and in these locations is inconvenient for the operator and increases the risk of damage to the dies. One die manufacturer provides acabinet wherein the dies are stored with their receiving structures disposed in slots formed in the bottom of drawers. The upper dies are thus stored upside down. Although this type of a cabinet keeps the dies safe and out of the way, the upper diesmust be flipped over when loaded and unloaded. This increases the risk of damaging a die by dropping it on the floor or by hitting it against something.BRIEF SUMMARY OF THE INVENTION The invention provide
Pretension Loading Method For Power Transmission Chain And Pretension Loading Apparatus - Patent 8141402
1. Field of the Invention The present invention relates to a pretension loading method for a power transmission chain used in a power transmission apparatus such as a chain type continuously variable transmission that is applied to a vehicle etc. and a pretension loadingapparatus that is used for the method. 2. Related Art As a continuously variable transmission (CVT) of an automobile, for example, there is a known continuously variable transmission including an input pulley which is disposed in an engine, an output pulley which is disposed in a drive wheel, and apower transmission chain with a continuous shape which is wound around both the pulleys. In the power transmission chain, a pin and a strip serving as pin members are inserted through a pin hole disposed in a link plate. At this time, sheave surfaceswith a conical shape of both the pulleys come into contact with, for example, a pin end surface of the chain to thereby generate a friction force, so that a power is transmitted by the friction force. At the time of manufacturing a power transmission chain including the link plate and the pin members, a plurality of link plates having a pair of pin holes are laminated so that the pin holes communicate with each other. Subsequently, the pinis inserted through the communicating pin holes, so that the plurality of link plates are bendably connected to each other to thereby configure a chain with an endless loop shape. Subsequently, pretension is loaded on the chain with an endless loopshape, so that the length or the pitch of the chain made uniform (for example, see JP-A-8-74938 and JP-A-11-201238). In order to load pretension on the chain with an endless loop shape described above, generally, the chain is wound around two rollers which are disposed at a predetermined gap therebetween, and then the rollers endlessly rotate the chain so asto load a tensile load thereon. An example of chain deformation due to the load tension includes an elastic deformation a
Method And Apparatus For Forming A Can Shell - Patent 8141406
This invention relates to the method and apparatus for forming a can shell from sheet metal or sheet aluminum, for example, such as the methods and apparatus or tooling disclosed in U.S. Pat. Nos. 4,713,958, 4,716,755, 4,808,052, 4,955,223,6,658,911 and 7,302,822. The disclosures of these patents are herein incorporated by reference to supplement the detail description of the present invention. In such tooling assembly or apparatus, it has been found desirable for the apparatus to be constructed for use in a single action mechanical press such as disclosed in above mentioned U.S. Pat. Nos. 4,955,223 and 7,302,822 and to avoid usinga double action mechanical press, for example, as disclosed in above-mentioned U.S. Pat. Nos. 4,716,755 and 6,658,911. A single action high speed press is simpler and more economical in construction and is more economical in operation and inmaintenance and can be operated effectively and efficiently, for example, with a stroke of 1.75 inch and at a speed of 650 strokes per minute. There are also many more single action high speed presses in use in the field than there are double actionpresses. It has also been found desirable for the apparatus or tooling assembly to incorporate an inner pressure sleeve and an outer pressure sleeve and to operate both sleeves with air pressure, but avoid actuating the inner pressure sleeve withcircumferentially spaced and axially extending springs, for example, as disclosed in U.S. Pat. No. 7,302,822 or the use of circumferentially spaced and axially extending pins, for example, as disclosed in U.S. Pat. No. 4,716,755. The high speedaxial reciprocating movement of the pins and the single piston which actuates the pins create undesirable additional heat, and is difficult to produce an adjustable and precisely controllable axial force on the inner pressure sleeve with the use ofcompression springs. It is further desirable to have a precisely controllable constant force exerted by the outer p
Method Of Manufacturing Structural Components From Tube Blanks Of Variable Wall Thickness - Patent 8141404
1. Field of the Invention The present invention relates to a method of forming tube blanks to achieve a desired shape. Specifically, the method involves the forming of tube blanks that have a variable wall thickness. More specifically, the forming process compriseshydroforming. 2. Description of the Prior Art In the automotive industry, various structural components are made from tubular blanks. Such blanks are usually formed into the desired component shapes using various forming technologies. One of such techniques that has become popular ishydroforming. In hydroforming, a tubular blank is placed within a die having a shape of the desired component. The ends of the tube are sealed and a pressurized fluid is applied to the interior of the blank. Such pressure expands the blank until itconforms to the shape of the die cavity. In the usual case, prior to hydroforming, the tube blank is bent to the desired shape and the hydroforming step is used to provide the desired cross sectional shape. Generally, the wall thickness of the tubularblank is generally maintained throughout the forming process, although a slight degree of reduction may be realized due to the stretching of the tube. In certain cases, it is desired that the finished product or component have a variable thickness in order to, inter alia, reduce the overall weight of the final product or to reduce the cost of the materials used to form the component. In othercases, the final product is required to have localized reinforcing in regions that are subjected to stresses, such as bends etc. or, in other cases, regions of weakness so as to preferably facilitate the bending of such sections. Various methods havebeen suggested to provide such variable wall product. For example, the method taught in U.S. Pat. No. 5,333,775 involves a number of tubular pieces of different wall thicknesses to be welded together to form the blank used in the hydroforming step. Although resulting in the required variab
Method For Producing Ultra Thin Wall Metallic Tube With Cold Working Process - Patent 8141405
The present invention relates to a method for cold-working a metallic tube, particularly to significant enlargement of a producible range on a thin wall side for the metallic tube and a method for producing an ultra thin wall metallic tube bythe cold working process.BACKGROUND ART The metallic tube in a hot finishing state is delivered to a cold working process, when the metallic tube does not satisfy requirements in quality, strength, or dimensional accuracy. Generally, examples of the cold working process include acold drawing process in which a die and a plug or a mandrel bar are used and a cold rolling process in which a cold pilger mill is used. In the cold rolling process with the cold pilger mill, diameter reducing rolling is performed to a mother tube between a pair of rolls having a circumferentially-tapered groove die whose calibers are gradually reduced in a circumferentialdirection and a tapered mandrel bar whose diameters are gradually reduced toward its front end in a lengthwise direction. That is, the grooves are provided over the circumferences of the pair of rolls, and the grooves have such configuration thatcalibers of the grooves become narrowed as the rolls are rotated. The roll is repeatedly advanced and retreated along the tapered mandrel bar while rotated, whereby the rolling is performed to the mother tube between the rolls and the mandrel bar (forexample, see "Iron and Steel Handbook third version" vol. 3, (2) Steel Bar, Steel Tube, and Rolling Common Facilities). FIG. 1 is a view showing a rolling principle of the cold pilger mill, FIG. 1(a) is an explanatory view showing a start point of a forward stroke, and FIG. 1(b) is an explanatory view showing a start point of a backward stroke. As shown in FIG.1, in the cold pilger mill, a pair of rolls 2 and a tapered mandrel bar 4 are used according to an outside diameter do and a wall thickness to of a mother tube 1 and an outside diameter d and a wall thickness t of a rolled tube 5 of a pro
Method For Bending Pipes, Rods, Profiled Sections And Similar Blanks, And Corresponding Device - Patent 8141403
This application claims benefit of Serial No. 08425360.8, filed 21 May 2008 in Europe and which application is incorporated herein by reference. To the extentappropriate, a claim of priority is made to the above disclosed application.BACKGROUND OF THE INVENTION The present invention relates to a method for bending pipes, rods, profiled sections and similar blanks. According to a further aspect, the present invention relates to a device for bending pipes, rods, profiled sections and similar blanks. The expression "method for bending pipes, rods, profiled sections and similar blanks" is to be intended as referred to the set of technological operations of plastic deformation of the blank in question, which are required to change the courseof the axis thereof from a straight one to a curvilinear one according to a continuous or discontinuous path, by applying simple or composite mechanical stresses onto the blank and by properly constraining the blank itself. In the remaining part of thedescription, reference will be made for convenience's sake to the bending of pipes, although the invention is clearly applicable to the bending of any other similar blank, be it a bar, a profiled section etc. The known bending methods differ from each other substantially in the way of applying the deformation forces or torques, and in the way of constraining the pipe, usually by means of bending tools (dies) suitably sized and shaped. Thecharacteristic parameters of the bending method are the size (diameter and thickness) of the pipe, the material of the pipe and the spatial course of the axis of the pipe, which course is defined by the length of the straight portions between adjacentbends, by the bending radiuses and angles and by the relative spatial orientation of the bends. In particular, each bend of the final product of the bending method is defined by the bending radius, or centerline radius, and by the bending angle. Nowadays, the most commonly used pipe bending methods are
Method And Apparatus For Analyzing A Layer Of Metal-working Liquid - Patent 8141401
This application is the US-national stage of PCT application PCT/EP2007/005076 filed 8 Jun. 2007, published 27 Dec. 2007 as WO2007/147489, and claiming the priority of German patent application 102006027972.7 itself filed 17 Jun. 2006 and PCTpatent application PCT/EP2007/005076 itself filed 8 Jun. 2007, whose entire disclosures are herewith incorporated by reference.BACKGROUND OF THE INVENTION The invention relates to a method of analyzing a layer of a treatment liquid on the surface of a workpiece to be shaped, particularly a metal strip, upstream and/or downstream of the shaping process, especially a roll process, for variousmeasuring variables. The invention also concerns an apparatus with at least one detector for generating scanning signals of a layer of the treatment liquid on the surface of the workpiece to be shaped, the detector being located upstream and/ordownstream of a shaping device, particularly a roll stand, and with an evaluator for analyzing the scanning signal generated by the detector for various specific measurement variables of the treatment liquid.BACKGROUND OF THE INVENTION In principle, in shaping processes, there is a need for the use of a treatment liquid for sufficient separation of the rolling stock and the rolls. Should this separation not be successful in the desired manner, metallic contact occurs betweenthe parts that are undergoing shaping, and based on their relative displacement to one another, faults result in the desired surface structure of the rolling stock. Concerning this, several methods of the generic type are known in prior art. From DE 197 44 503 [U.S. Pat. No. 6,089,069], an apparatus and a method are known for influencing frictional relationships between the upper and lower roll in roll stands of warm broad strip or cold-strip conveyor lines. This way, the methodis essentially characterized in that the upper face of the strip and/or the lower face of the strip of the rolling stock is wetted at the intake side
Hog Ring Fastening Device - PDF
1. Field of the Invention The present invention relates to a hog ring fastening device including a C ring fastening device. 2. Description of the Related Art As disclosed in Japanese Patent Application Laid-Open publication No. 2006-150510, a related art device for fastening a hog ring includes a device body, a first swing member turnably supported to the body, a push member provided at the firstswing member, a feed pneumatic cylinder fixed to the first swing member, a second swing member turnably supported to the body, the feed pneumatic cylinder being contacted at a tip end of a piston rod thereof with the second swing member, a feed memberprovided at the second swing member, a push spring seat fixed to the body, a push spring provided between the push spring seat and the first swing member, and an extension spring provided between the first and second swing members. In the hog ring fastening device, in a condition where the feed member finishes feeding of a hog ring assembly, the push member pushes the hog ring assembly in a feed direction, so that a foremost hog ring of the hog ring assembly can be surelyfed to a fastening portion. However, in such a hog ring fastening device, it is necessary to provide a push mechanism including the first swing member and the push member, whereby the structure of the hog ring fastening device becomes complicated and the production cost ofthe hog ring fastening device is increased.SUMMARY OF THE INVENTION It is an object of the present invention to provide a hog ring fastening device, the structure of which is simple and the production cost of which is low. In accordance with an aspect of the present invention, there is provided a hog ring fastening device comprising a body, a magazine attached to the body, jaws pivotally supported on the body, a main pneumatic cylinder for moving the jaws towardor away from each other, a feed pneumatic cylinder fixed to the body and adapted to be contracted when the jaws are turned away from
Spline Member Manufacturing Apparatus And Manufacturing Method - Patent 8136380
INCORPORATION BYREFERENCE The disclosure of Japanese Patent Application No. 2007-249140 filed on Sep. 26, 2007 including the specification, drawings and abstract is incorporated herein by reference in its entirety.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing apparatus and a manufacturing method for a spline member obtained by forming a spline portion in a boss portion that is in the shape of a circular tube. 2. Description of the Related Art Spline members are widely used as, for example, automobile parts, the spline members each being obtained by forming a spline portion in a circular-tube shaped boss portion (see Japanese Patent Application Publication No. JP-A-2004-34037). Generally speaking, such a spline member is manufactured by using a material having a plate-like base plate portion and the circular-tube shaped boss portion that is provided so as to project from the base plate portion and by forming the splineportion in the boss portion along the axial direction.SUMMARY OF THE INVENTION According to a known manufacturing method, before a spline forming step of forming the spline portion is performed, a shaving step is performed so as to form cutout portions in the outer circumference portion of the base plate portion andprocess the base plate portion so that it has a desired exterior shape. However, because the shaving step and the spline forming step are performed separately, the levels of coaxiality and positional precision of the cutout portions with respect to thespline portion are insufficient in the obtained spline member. In view of the problem in the known manufacturing method, it is an object of the present invention to provide a spline member manufacturing apparatus and a spline member manufacturing method that are able to achieve sufficient levels ofcoaxiality and positional precision of cutout portions with respect to a spline portion. A first aspect of the present invention provides a s
Seal For Fluid Forming Tools - Patent 8136378
BACKGROUND 1. Technical Field The present invention relates to seals for tools that use fluid to form a part against a rigid forming surface. 2. Background Art Fluid forming processes generally include processes in which a workpiece is formed in a tool where one side of the tool is provided by a liquid. The other side of the tool is generally a rigid die against which the part is formed. Examples offluid forming processes include hydro-forming, bladder press forming, super-plastic forming, electro-hydraulic forming, and explosive forming. Traditional seals for such applications include elastomeric seals, such as O-rings. Elastomeric seals used in hydro-forming applications may feature an O-ring inserted in a circumferential groove that is pushed inside the tube that is to behydro-formed. Such O-ring seals have a short useful life in hydro-forming applications. In sheet forming applications, sealing requirements are more stringent. Elastomeric seals resist drawing the flange of the sheet across the seal. Metal-to-metal seals are used in hydro-forming applications that include a mandrel that includes a conical surface that is inserted into the tube that is to be hydro-formed. The mandrel is axially moved to provide additional material for theforming process. This approach is not adaptable to sheet forming processes to permit the outer edge of the flange of the sheet metal blank to be drawn into the forming die. In hydro-mechanical drawing operations, metal-to-metal surface contact has been proposed in which ribs formed on the die directly contact the metal blank. This approach suffers from considerable leakage of fluid from the die cavity. With thisapproach, the pressure level used in the forming process must be limited. A disadvantage of this approach is excessive wear of the ribs formed on the die. In super-plastic forming operations, seals are used in which metal-to-metal contact is obtained by indenting seating elements or ribs into the body of the bl
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