Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| 7805971 | Forging die and process A forging die and process suitable for producing large forgings, including turbine disks and other rotating components of power-generating gas turbine engines, using billets formed by powder metallurgy. The forging die includes a backplate, and segments arranged in ... | 10/05/2010 |
| 7377042 | Method of cold-forming near net shape metal roller blanks for anti-friction bearings A machine, method and tooling to precision cold-form roller blanks for anti-friction bearings. The machine is a multistage progressive former using floating die cavities to enable simultaneous shaping of the ends of the roller with high accuracy and without flash. T... | 05/27/2008 |
| 7367211 | Forging device and method for forging work A forging device includes a die having an axis extending generally vertically. A work is placed in the die along the axis. First and second punches extend coaxially with the die and can interpose the work therebetween. A pressurizing section pressurizes the first an... | 05/06/2008 |
| 7347076 | Forging method and apparatus for forming helical gear Disclosed herein are a helical gear forging apparatus wherein a forming introduction portion thereof, used to form gear teeth of the helical gear, is variable in shape on the basis of the desired helix angle of the gear-teeth so as to constantly keep a predetermined... | 03/25/2008 |
| 7210325 | Tube thread forming apparatus and method A tube partial thread forming apparatus and method is disclosed. A tube is placed on the apparatus around internal die sections, which are separated by a mandrel to cause the internal die sections to engage the tube. stripper pieces are moved into engagement around ... | 05/01/2007 |
| 7194887 | Press for holding and pressing a workpiece The press of the invention includes a first component and a second component for holding and pressing a workpiece to be processed between them, the first component being driven into translation relatively to the second component by an air cylinder. Thus, the first c... | 03/27/2007 |
| 7191521 | Advanced geometry of skew and straight bevel gears produced by forging The present invention provides for bevel gears having a localized and stable bearing contact. The localization of bearing contact is achieved by substitution of flat tooth surfaces with parabolic tooth surfaces. This is accomplished by either modifying line-contact ... | 03/20/2007 |
| 7185524 | Grindless surgical needle manufacture A method for manufacturing a surgical needle devoid of a grinding process includes the steps of swaging a needle blank to define a substantially tapered or conical needle end, pressing the tapered needle to form a plurality of intersecting surfaces and forming cutti... | 03/06/2007 |
| 7146838 | Method of and apparatus for forming tooth profile A punch fixed to a body assembly is inserted into a hole in a workpiece, and the workpiece is pressed by an upper die to press a splining segment of the punch into the hole in the workpiece, thereby forming spline slots in the inner circumferential surface of the ho... | 12/12/2006 |
| 7131311 | Method of and apparatus for forming forging blank When an actuator is operated, an upper die is displaced downwardly, pressing a lower surface of a workpiece against a forming surface. After the upper die is displaced upwardly, an ejecting member is displaced upwardly to push the workpiece upwardly by a lower die. ... | 11/07/2006 |
| 7000444 | Forging method and apparatus A method of producing a bevel gear, particularly a bevel ring gear, the bevel gear comprising mounting surfaces. The method comprising the steps of flashless warm forging a blank, preferably an annular blank, in a forging die to produce the bevel gear with precision... | 02/21/2006 |
| 6961986 | Method and apparatus for fastening an auxiliary joining element and work piece An auxiliary joining element is joint to a sheet metal work-piece with a foot deformed to interlock the auxiliary joining element to the sheet metal work-piece. The foot is depressed into the sheet metal work-piece, which is retained over a die having a recess defin... | 11/08/2005 |
| 6877350 | Hub member and shaft journal assembly and method A production method involving forming an inner joint part of a constant velocity universal ball joint in the form of a hub member (11) which comprises a central through-aperture (14) with inner toothing (16) for receiving a shaft journal (12 | 04/12/2005 |
| 6745468 | Method of manufacturing a boat steering wheel with finger grip indentations A formed stainless steel steering wheel is produced by a process that includes starting with a linear stock of round tubing which is then formed into a generally circular shape with an oval-shaped cross-section. The two ends of the curved tubing are then welded toge... | 06/08/2004 |
| 6672126 | Stepped cam die The invention comprises a cam die. The cam die comprises at least one cam ring. The cam ring comprises a plurality of moveable cam teeth. The cam teeth are moveable on a normal toward an axis of the cam die by a cam actuator. The cam actuator has an insid... | 01/06/2004 |
| 6651300 | Clinching device with movable lever A clenching device for generating a clenching connection between a first workpiece and a second workpiece using a plunger which is movable from above into a recess of a die, wherein a peripheral wall of the recess has stationary wall sections which extend... | 11/25/2003 |
| 6536257 | Speed-changing gear manufacturing apparatus For the purpose of providing a speed-changing gear manufacturing apparatus capable of forming back-tapered spline teeth having a chamfer at the tip with high accuracy, by forming both side faces of spline teeth in back-tapered shape and forming the tip in... | 03/25/2003 |
| 6457341 | Forging die The invention relates to a forging apparatus used for forging a heated blank (24a), which in a pre-treated operation has been given a volume essentially corresponding to that of the final product, said forging apparatus comprising upper and lower die part... | 10/01/2002 |
| 6178801 | Forging device for crown-shaped helical gear Crown twist forming teeth (14) are formed on the inside circumferential surface of a finishing die (13) with the thickness of each teeth being thinner in the middle part than toward both ends in the axial direction. The finishing die (13) is fitted for ax... | 01/30/2001 |
| 6161415 | Cold deep hole forming device A cold deep hole forming device is capable of forming, by cold forging a deep hole for an involute spline, etc. with high accuracy and in a simple way, even in a member to be formed that is partially different in thickness. A supporting base 1A supports t... | 12/19/2000 |
| 6155094 | Pressing tool for forming winding end turns in a stator A press tool for forming a compressible mass into an annulus of given inner and outer diameters and axial length, the tool having radially movable outer and inner tool parts adapted to expand and contract, respectively, to form the mass to the desired inn... | 12/05/2000 |
| 6125539 | Process for producing vibration isolator A process for producing a vibration isolator. The process involves steps of forming an intermediate product including an axial member, an outside member having a cylinder-shaped portion and a rubber elastic member, and drawing the cylinder-shaped portion ... | 10/03/2000 |
| 6044684 | Forging apparatus for inner race of constant velocity universal joint A plurality of grooves, which are defined in a reinforcing ring, comprise respective end walls which are formed as inclined surfaces. The grooves further comprise walls on which engaging projections are disposed in parallel to the inclined surfaces respec... | 04/04/2000 |
| 5799528 | Manually operated tool for upsetting a steel reinforcement bar A portable tool for mechanically upsetting a steel reinforcement bar (e.g. rebar), one end of which is typically embedded in a concrete or similar structure, so that a relatively wide upset head can be formed at the protruding end to permit the bar to be ... | 09/01/1998 |
| 5776268 | Process for manufacturing surgical needles A process for progressively manufacturing cutting edge needles or wire members. Needle blanks or wire blanks are cut from a roll of wire and mounted to a carrier strip. The carrier strip and needles are moved through a succession of coining dies and at le... | 07/07/1998 |
| 5709121 | Method and apparatus for hydraulically upsetting a steel reinforcement bar A method and a portable tool for hydraulically upsetting a steel reinforcement bar (e.g. rebar), one end of which is typically embedded in a concrete or similar structure, so that a relatively wide upset head can be formed at the protruding end to permit ... | 01/20/1998 |
| 5694802 | Apparatus for forming snap ring groove in clutch drum An apparatus for forming a snap ring groove in a clutch drum by pressing a lower die, an upper die, a workpiece supporting member, first sliding members and second sliding members, a workpiece receiving member fixed on a radially inner end of each first s... | 12/09/1997 |
| 5517743 | Method and apparatus for joining superposes metal sheets A method and a tool set for joining superposed metal sheets are disclosed. In a first step, a preferably ring-shaped free space is provided by dislocating material of at least one sheet. Thereafter, material of all sheets is squeezed within the confines o... | 05/21/1996 |
| 4985993 | Method for producing wheel rim A method for producing a wheel rim of an automotive vehicle comprising the steps of supporting a cylindrical body on a vertical axis between an upper punch attached to an upper mold and a lower punch attached to a lower mold; fitting a side die to an oute... | 01/22/1991 |
| 4951377 | Core sizing method A method for predeterminately sizing a core using a pair of generally opposed die means operable for compressing only an outer circumferential section of the core defined generally axially between a pair of opposite end faces of the core at least generall... | 08/28/1990 |
| 4922738 | Process for manufacturing a single piece alloy wheel rim for vehicle tires A process for forming a single piece rim for vehicle tires comprising the steps of axially deforming a toroid of aluminum alloy material so as to form a hollow tubular element of predetermined length and thickness having an annular inwardly directed radia... | 05/08/1990 |
| 4794778 | Core sizing apparatus Apparatus for predeterminately sizing a core has a pair of generally opposed dies operable for compressing only an outer circumferential section of the core defined generally axially between a pair of opposite end faces of the core at least generally adja... | 01/03/1989 |
| 4601191 | Outerrace of universal joint with cross grooves A method of forming an outerrace of a universal joint having cross grooves, in which its cylindrical portion is formed in its inner face with cross grooves by a plastic working process such as a forging process, an outerrace of a universal joint, which ha... | 07/22/1986 |
| 4531396 | Forging die package A die package for forming a central disc structure having a plurality of integrally formed appendages extending therefrom includes a cylindrical array of appendage forming, abutting die segments which are prevented from tilting or moving in a circumferent... | 07/30/1985 |
| 4530229 | Forging method and die package therefor A die package for forging a central disc structure having a plurality of integrally formed appendages extending radially outwardly therefrom includes a circumferential array of abutting die segments defining a central cavity within the array and appendage... | 07/23/1985 |
| 4389870 | Forming engagement grooves in a tool shank In the formation of engagement grooves in the shank of a tool for use in a hammer drill or chipping hammer, a matrix or die is divided along a junction plane into two matrix halves. A bore for holding the tool to be punched is formed along the junction pl... | 06/28/1983 |
| 4312211 | Forging method and apparatus The present invention provides methods and apparatus improving the dimensional accuracy of forged components. Uniformity of like component details is sought and a specific object is to provide a die package for forming closely toleranced appendages integr... | 01/26/1982 |
| 4265105 | Forging apparatus The present invention provides methods and apparatus improving the dimensional accuracy of forged components. Uniformity of like component details is sought and a specific object is to provide a die package for forming closely toleranced appendages integr... | 05/05/1981 |
| 4252011 | Die assembly for use in forging operation The present invention provides a technique for improving the dimensional accuracy of forged components. Uniformity of like component details is sought and a specific object is to provide a die package for forming closely toleranced appendages integrally w... | 02/24/1981 |
| 4207761 | Apparatus for flanging can bodies A method and apparatus for forming a uniformly sized flange on one end of a can body. The apparatus comprises a plurality of vertically spaced assemblies operating relative to a vertical centerline. A bottom lifter plate serves to position a can body vert... | 06/17/1980 |
