Famous Patents
William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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 |
| 8161855 | Cutting machine and method for controlling head moving device of same A cutting machine secures safety of a worker during movement of a head without lowering production efficiency. When moving a cutting head without cutting material to be cut upon a table, a moving truck and the cutting head are moved at a higher speed as compared wit... | 04/24/2012 |
| 7084368 | Thermal cutting machine and cutting method using same A thermal cutting machine and a cutting method using the same are described, which employ a simple, long-life torch hood for effectively shutting off spatter, the torch hood enabling easy supervision of the cut condition of a workpiece and easy replacement of the co... | 08/01/2006 |
| 7069847 | Overload protection control method for pressing machine An overload protection control method for a pressing machine capable of performing overload protection with excellent responsiveness with a simple structure is provided. For this purpose, the overload protection control method includes the steps of driving a slide (... | 07/04/2006 |
| 7067762 | Plasma cutting process and machine A plasma cutting machine is provided in which a dross adhesion inhibitor is jetted from a plasma torch toward the cutting start position (piercing position) of the object material. A dross adhesion inhibitor supply flow path for feeding the dross adhesion inhibitor ... | 06/27/2006 |
| 6970767 | Die height adjusting device for pressing machine A die height adjusting device for a pressing machine, which withstands high vibrations and high impacts during pressing work, and is capable of realizing high precision of a slide position, is provided. For this purpose, the die height adjusting device includes an i... | 11/29/2005 |
| 6933462 | Plasma processing apparatus for monitoring and storing lifetime usage data of a plurality of interchangeable parts A plasma processing apparatus capable of making an accurate lifetime assessment for each of plural consumable parts (the definition of “the consumable part” is an electrode and/or a nozzle) so that effective use of the consumable parts becomes possible leading t... | 08/23/2005 |
| 6933463 | Main arc ignition device and main arc ignition control method of plasma cutting machine A main arc ignition method capable of extending lives of a plasma electrode and a nozzle. For this purpose, before or immediately after starting arc, a plasma torch is supplied with a plasma gas at least either at a lower flow rate or at lower gas pressure; the plas... | 08/23/2005 |
| 6914209 | Plasma arc machining method Not only damage to a nozzle caused by spatter generated during piercing is prevented but also the deterioration of the nozzle owing to a pilot arc is restrained, whereby the service life of the nozzle is significantly increased. To this end, the plasma torch is posi... | 07/05/2005 |
| D506764 | Nozzle for a plasma arc torch | 06/28/2005 |
| 6871586 | Slide drive apparatus and slide drive method for pressing machine A slide drive apparatus and a slide drive method for a pressing machine capable of enhancing positioning precision at the time of adjustment of die height, and responding to pressing work at high stroke per minute. For this purpose, the drive apparatus includes a sl... | 03/29/2005 |
| D500064 | Nozzle for a plasma arc torch | 12/21/2004 |
| D499124 | Nozzle for plasma arc torch | 11/30/2004 |
| 6664495 | Thermal cutting machine and dust collecting method thereof A thermal cutting machine and a dust collecting method capable of reducing in size and exhausting fumes and a high pressure gas efficiently. For this purpose, the thermal cutting machine includes a plurality of exhaust chambers (20) which are placed side ... | 12/16/2003 |
| 6520074 | Pressing machine An improved pressing machine for forming a work (21) being progressively or sequentially fed along a coil line, having a press assembly (1) that comprises a plurality of modular press units (11, 12, 13, . . . ) connected f... | 02/18/2003 |
| 6250128 | Forging die and upset forging method An upset forging die device and method are provided for upset-forging a raw material that is being filled in a cavity of a lower molding die at a portion between an upper punch of an upper molding die provided on a slide and a lower punch of the lower mol... | 06/26/2001 |
| 6233988 | Bending method and bending apparatus for bending machine A bending method and bending apparatus directed to avoiding the risk of die breakage and damage to ram coupling parts due to an abnormal condition of a ram drive shaft and directed to achieving high-accuracy bending in which a uniform bend angle can be pr... | 05/22/2001 |
| 6192732 | Bending method and bending apparatus for bending machine A bending method and bending apparatus directed to avoiding the risk of die breakage and damage to ram coupling parts due to an abnormal condition of a ram drive shaft and directed to achieving high-accuracy bending in which a uniform bend angle can be pr... | 02/27/2001 |
| 6145366 | Ram control method and ram control system for press brake Damage to the dies due to a die collision caused by an input error of bending data etc. is avoided without use of a specialized device for pressure detection. A die interference checking mode is provided for setting the pressure of the ram, which supports... | 11/14/2000 |
| 6098435 | Method and system for determining bending order adapted for use in bending machine A bending order which provides a highest possible bending accuracy is determined. First a bending order generating section generates a plurality of bending orders possible for bending operation. Then, whether the bend angle of each bend can be measured in... | 08/08/2000 |
| 6003429 | High speed and high-load cylinder device and method for controlling the same A high speed and high load operable hydraulic drive cylinder system comprises a principal cylinder (3) with a piston (3a)) defining an upper and a lower chamber (3c, 3d) and a piston rod (3b), and a subsidiary cylinder (2) smaller in pressure receiving ar... | 12/21/1999 |
| 5957046 | High speed hydraulic press There is disclosed a high speed hydraulic press, having a press machine body (1) that is constructed of a C-shaped frame (1a), a high speed operable hydraulic cylinder assembly (3) with a portion of hydraulic cylinder disposed in an upper part of the pres... | 09/28/1999 |
| 5900168 | Plasma cutting method A plasma cutting method for use in a plasma cutting apparatus having a nozzle with an orifice in which a plasma arc is pinched and thereby narrowed and densified and a flushing secondary gas for surrounding a forward end portion of the nozzle. Also, a non... | 05/04/1999 |
| 5874707 | Processing torch having a separably assembled torch base and torch head A processing torch having a separably assembled torch base and torch head includes a first ring member rotatably provided on an outer periphery of one of the torch base and the torch head, and a second ring member fixed on the other one of the torch base ... | 02/23/1999 |
| 5865088 | High-speed safety circuit for a hydraulic press A high speed safety circuit arrangement is provided for a hydraulic press which is driven by a hydraulic cylinder assembly constituted by a principal cylinder unit and a subsidiary cylinder unit. The circuit arrangement comprises a servo valve disposed in... | 02/02/1999 |
| 5813322 | Die height correcting apparatus for press A die height correcting apparatus for a press having sides formed by C-shaped frames and a slide to be driven up and down being provided on an upper portion of a press body, includes an auxiliary frame provided on the side surface of at least one of the C... | 09/29/1998 |
| 5787926 | Overload preventive device An overload preventive device is capable of preventing elevation of preload pressure due to sticking action or break-through load of a hydraulic cylinder of a press machine. A delay valve for opening when the internal pressure of the load detecting circui... | 08/04/1998 |
| 5701811 | Die protection apparatus for a hydraulic press There is provided a die protection apparatus for a hydraulic press in which a slide is moved up and down by a hydraulic cylinder, which apparatus comprises: a slide position detection means for detecting a position of the said slide; a pressure detection ... | 12/30/1997 |
| 5673615 | Slide control method in a hydraulic press A hydraulic press for moving a slide up and down by the use of a hydraulic cylinder, the slide is lowered from a descending region to a molding region while its position is controlled on the basis of a position signal detected by slide position detector, ... | 10/07/1997 |
