Quotables
"The production of too many useful things results in too many useless people."
Karl Marx
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8061176 | Press molding device and press molding method A press molding device, which has a die 2, a punch 3 and a cushion ring constituted by a first cushion ring 5 and a second cushion ring 6, is characterized in that the first cushion ring 5 is disposed around the punch 3, the... | 11/22/2011 |
| 7861569 | Reaction device for forming equipment A reaction device for forming equipment includes a base, a reaction member movably spaced therefrom by guides, and a return gas spring carried by the base and operatively engaged to the reaction member for yieldably biasing the reaction member away from the base. Th... | 01/04/2011 |
| 7818988 | Striker plate and sheet-metal forming tool comprising such a striker plate A striker plate for a sheet-metal forming tool designed to be arranged between a gas-filled spring having a striking surface on a piston rod stop and a surface situated on the sheet-metal forming tool and thereby to receive force from the gas-filled spring in sheet ... | 10/26/2010 |
| 7707866 | Die separator cylinder A die separator cylinder for use in separating first and second portions of a metal forming die set comprises a housing including a bore. A piston is adapted to reciprocate in the bore between an extended position and a depressed position. The die separator cylinder... | 05/04/2010 |
| 7406851 | Die cushion controlling apparatus and die cushion controlling method A die cushion controlling apparatus for controlling an operation of a cushion pad, which comprises a pad drive mechanism for driving to raise or lower the cushion pad while applying an upward energizing force, a load measuring unit for measuring a load generated in ... | 08/05/2008 |
| 7401488 | Die cushion apparatus A cylinder is formed in the lower portion of a cushion pad, and a piston coupled to an upper end of a rod is slidably contained in the cylinder. The rod is coupled to a rotary shaft of a servomotor. An oil pressure chamber is formed of an inner wall surface of the c... | 07/22/2008 |
| 7370506 | Forging die with marking means A forging die includes on one face, a half-imprint of a part to be forged such as a turbine engine blade. The die also includes on the face, a device for forming a marking along two directions relatively to which the position of the imprint is defined, the device in... | 05/13/2008 |
| 7340934 | Press molding die and manufacturing method of same A press molding die capable of preventing a workpiece from moving is provided. The press molding die includes a punch for pressing a workpiece; a molding die having a molding surface on which the workpiece is placed and a concave portion which is formed on the moldi... | 03/11/2008 |
| 7337645 | Draw press with a fixed draw punch and a floating draw punch A machine is disclosed for producing a deep drawn part and a shallow drawn part from sheet metal blanks in a single action draw press. A floating draw punch and a fixed draw punch are provided. The first draw die forms a part that is drawn over the fixed draw punch ... | 03/04/2008 |
| 7331208 | Die cushion controller A die cushion controller uses position control to position die cushion members for placement of a metal sheet. A pressing process starts and the upper die is lowered. When a position detector detects a position at which the upper die touches the sheet metal, the die... | 02/19/2008 |
| 7302822 | Shell press and method for forming a shell An apparatus and method for forming a shell with a central panel and a chuck wall is provided. The apparatus and method employ the use of a biasing member to selectively bias and control movement of the inner pressure sleeve and a die core having an outer diameter e... | 12/04/2007 |
| 7296456 | Methods and apparatus for manufacturing flanged articles A method for manufacturing an article (420) having a peripheral portion (422) may include reverse squeezing an initial peripheral portion (22) of an initial article (20) to form a first intermediate article (12) having a first inte... | 11/20/2007 |
| 7293447 | Control device for die cushion mechanism A control device for a die cushion mechanism, for carrying out force control with high accuracy and at a high speed. The control device for controlling the force generated by the die cushion mechanism utilizes a press working cycle which is repeatedly carried out. A... | 11/13/2007 |
| 7287409 | Die cushion device A die cushion device is comprised of die cushion modules which are independently movable and unitized. The individual die cushion modules are provided with a cushion pad, a servomotor, a power transmission mechanism, a power conversion mechanism and a guide member. ... | 10/30/2007 |
| 7260971 | Apparatus for locking a sheet of metal suitable to be shaped in a press An apparatus for locking a sheet of metal to be shaped in a press, comprising at least one fluid-operated actuator for translational motion of a first sheet presser, adapted to support, in an initial operation step a sheet of metal to be shaped, arranged above a fir... | 08/28/2007 |
| 7257460 | Reconfigurable variable blank-holder force system and method for sheet metal stamping A reconfigurable variable blank-holder force system (and method) for producing sheet metal stampings comprises a portable hydraulic unit, controlled by a digital control system and a knowledge-based expert system to enable reconfigurability and an easy transition fr... | 08/14/2007 |
| 7247006 | Method and apparatus for sealing an ultrahigh-pressure fluid system An ultrahigh-pressure fluid system, such as an ultrahigh-pressure fluid pump, includes an improved dynamic seal assembly that can withstand pressures above 40,000 psi, and more preferably, pressures up to and beyond 87,000 psi. The dynamic sealing assembly includes ... | 07/24/2007 |
| 7243521 | Cushion pin, wear plate, load supporting device, die cushion, press machine and pressing method An elastic member is disposed on a load supporting device such as cushion pins and wear plates, which are placed between at least a workpiece and a die cushion pad and transfer a load applied to the work to the die cushion pad, to support the load. The load supporti... | 07/17/2007 |
| 7237423 | Apparatus for stretch forming blanks A blank is stretch formed into a formed piece by bending the blank over a stationary punch. A draw ring has a step that cooperates with a pad ledge to create a step-ledge. The blank is bent with a reverse bend at the step-ledge. Subsequently, the step-ledge travels ... | 07/03/2007 |
| 7086265 | Method for controlling the material flow during the deep-drawings of sheet metal, and deep-drawing tool A method for controlling the material flow during the deep-drawing of sheet metal involves compressing the edges of the sheet metal (1) between at least one upper stopper (13) and at least one lower stopper (6, 7) during the deep-drawing process... | 08/08/2006 |
| 7083164 | Cushion and cushion cylinder for ram or bolster of a press A high-pressure, inert gas cushion assembly for the ram or bolster of a metal stamping press includes a manifold having fluid-flow passages defined therein, along with a plurality of cylinder mounting locations each in communication with at least one of the fluid-fl... | 08/01/2006 |
| 7007535 | Method and apparatus for aligning components of a press A method and apparatus for aligning opposed telescopically engageable cut ring and blank and draw die when mounted in a can body forming press to form non-round disc-shaped blanks which are subsequently formed into container bodies. A pair of opposed precision forme... | 03/07/2006 |
| 7004007 | Die cushion apparatus for hot stretch-forming A self-contained die cushion assembly for use in a stretch-forming process involving heated tooling. A lower plate is mounted below an upper plate that undergoes different thermal expansion than the lower plate. Guidance devices are mounted between the upper and low... | 02/28/2006 |
| 6968724 | Method and apparatus for making a can lid shell A method and apparatus for making can lid shells in die presses, with the addition of a forming ring within the die set. The forming ring is placed between the draw pad and die center, and is used to apply a force on the material during the shell lid forming process... | 11/29/2005 |
| 6941789 | Die cushion device After molding is started, a large reaction force is obtained by compressing the air within a lower chamber by a piston while maintained in a sealing state. At an intermediate time of the molding, a small reaction force is obtained by communicating the upper and lowe... | 09/13/2005 |
| 6796159 | Low contact force spring A fluid spring assembly. The spring assembly preferably includes a body that slidably supports a piston that is attached to a piston rod. The piston serves to define a fluid chamber within the body that is charged with a pressurized fluid medium. The piston is retai... | 09/28/2004 |
| 6729173 | Hydraulic draw press arrangement A hydraulic drawing system for a press is provided for controlling a blank holder. The blank holder can be moved by at least one hydraulic cylinder-piston unit which has at least one pressure chamber. By way of a connection line, the pressure chamber is connected di... | 05/04/2004 |
| 6705150 | Method of making a raised panel door section for a garage door A raised panel door section (22, 54, 64) for an overhead garage door (20, 50, 60) includes a sheet metal layer (32, 56, 66) formed from sheet metal stock (74) that is embossed to produce a raised panel design by an automated method that s... | 03/16/2004 |
| 6691545 | Tool and a method for pressure shaping The invention concerns a tool for regulating the surface pressure on a blank constituting a metal plate which forms the starting item for shaping a finished item in a press. The blank is placed between a draw ring (23) and a blank holder ring (24). Beside... | 02/17/2004 |
| 6622539 | Deep-drawing method and deep-drawing die In order to provide a deep-drawing method, with which a drawn part is arranged in a deep-drawing die between a first deep-drawing die part and a second deep-drawing die part and is formed by way of relative movement of the deep-drawing die parts in relati... | 09/23/2003 |
| 6588244 | Process for hydroforming sheet metal and device for practicing the same A process for hydroforming sheet metal, in which a blank (1) is secured with the help of a blank holder (2', 2", 2'") on a matrix (4') provided with a cavity (3') for stamping the blank (1) with the help of a die (5', 5", 5'") entering the matrix, charact... | 07/08/2003 |
| 6564609 | Equalizing fluid-operated apparatus and method of assembling the apparatus An equalizing fluid-operated apparatus for use with a pressing machine, the apparatus including a flat common manifold which has bottomed holes having respective bottoms, and a communication passage that communicates the bottomed holes with each other, an... | 05/20/2003 |
| 6520075 | Double action hydraulic press A high precision, all-purpose, double action hydraulic press, which can control the speed, position, and parallelism of each slide, can conduct mold exchanges easily, and prevent the breakthrough phenomenon is provided with an outer slide 4, an inner slid... | 02/18/2003 |
| 6460396 | Power press This invention relates to a hydraulic force modulator used in a power press to provide a predetermined force with a defined force applied by a ram of the press at defined incremental positions of the ram relative to a stationary part of the press. A movea... | 10/08/2002 |
| 6386013 | Container end with thin lip A container end is provided with a suitable stock thickness for necessary strength and pressure resistance over its selected areas of its central portion while employing a substantially thinner peripheral wall. A method of forming thins the peripheral wal... | 05/14/2002 |
| 6354131 | Deep-drawing tool with integral holding-down device A deep-drawing tool where the holding-down device is incorporated into the punch, and the holding-down device consists of individual punches uniformly on the circumference, where the punches are designed as elastomers.... | 03/12/2002 |
| 6237381 | Power press ram force modulation and apparatus for use therewith This invention relates to a hydraulic force modulator used in a power press to provide a predetermined force with a defined force applied by a ram of the press at defined incremental positions of the ram relative to a stationary part of the press. A movea... | 05/29/2001 |
| 6167742 | Drawing and coining die for manufacturing metal containers and the like A drawing and coining die for metal containers, comprising: a matrix, which is connected to a base associated with a moving slider of a press and comprises a sliding plate provided with elastic means in contrast with the base; a male element, which is con... | 01/02/2001 |
| 6032506 | Improvment to the blank holder force regulating system in a press A stamping press comprising a blank-holder force-regulating system using fluid-operated compensating cylinders (5, 7). The variation in the force in the blank-holder pressure-regulating areas is thus compensated so as to maintain a predetermined constant ... | 03/07/2000 |
| 6009783 | Method in a sheet metal work center and a sheet metal work center The invention relates to a sheet metal work center and a method for fabricating sheet metal therefrom. In the sheet metal work center, a locking arrangement is placed between the upper tool and a releaser, and the transfer device is arranged to consist of... | 01/04/2000 |
