Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7677955 | Grinding method for wafer A grinding method for a wafer having a plurality of devices on the front side, wherein the back side of the wafer is ground by a grinding wheel to suppress the motion of heavy metal in the wafer by a gettering effect and also to maintain the die strength of each dev... | 03/16/2010 |
| 7666065 | Shaping apparatus A shaping apparatus for shaping a flotation core includes a worktable. At least one support is adjustably mounted on the worktable to be adjustable at least along a z-axis and configured to support the core. At least one engagement mechanism is mounted on the workta... | 02/23/2010 |
| 7662024 | Method and apparatus for precision polishing of optical components A polishing apparatus comprising a base for affixing structures thereto, a drive wheel, a polishing wheel assembly, a polishing belt, and at least one routing wheel engaged with the polishing belt. The polishing wheel assembly includes an elongated arm including a d... | 02/16/2010 |
| 7662025 | Polishing apparatus including separate retainer rings A polishing apparatus includes a polishing pad for polishing a wafer and a polishing head for holding the wafer. The polishing head includes a retainer ring, a membrane sheet, and a head body. The retainer ring retains the wafer in a horizontal direction. The membra... | 02/16/2010 |
| 7645183 | Mobile road or floor saw A floor or road saw (20) that includes a multi-speed transmission (24) that includes a neutral position. The transmission does not require the use of belts, polychains, or clutches that require regular maintenance and/or replacement. Moreover, the tran... | 01/12/2010 |
| 7637799 | Substrate production apparatus for producing a substrate for a display device A substrate production apparatus for producing a substrate for a display device is disclosed. The substrate production apparatus includes a first production apparatus including a first scriber to scribe a first mother substrate into at least one first model substrat... | 12/29/2009 |
| 7628678 | Method and device for pin removal in a confined space A method for drilling or cutting a pin (31) surrounded by solid material (32) includes the use of a water jet tool (10) having a nozzle (11) that is arranged at an angle with respect to a main body (12) of the water jet tool (10... | 12/08/2009 |
| 7614935 | Apparatus for machining a workpiece An apparatus for machining a strip- or plate-shaped metallic workpiece is proposed, in particular for the deburring of cut edges and/or for the grinding of surfaces of the workpiece, having at least one machining unit which has a revolving drive device which directs... | 11/10/2009 |
| 7607970 | Planing and polishing machine A planning and polishing machine includes a base, an intermediate base installed with a conveying device for laying a workpiece, and an upper base pivotally fixed with at least a planer and a grinding roller. A driving motor is installed below the conveying device, ... | 10/27/2009 |
| 7607969 | Grinding apparatus for a pin for use in power transmission chain and manufacture method of a pin for use in power transmission chain A disc-like grinding wheel 5 is formed with a circumferential groove 5a, the opposite walls of which define grinding surfaces 5b. A rotated carrier 3 brings a load pin 55 into rotary movement relative to the grinding ... | 10/27/2009 |
| 7591711 | Apparatus and method for polishing semiconductor wafers using one or more polishing surfaces An apparatus and method for polishing objects, such as semiconductor wafers, utilizes one or more polishing surfaces, multiple wafer carriers and at least one load-and-unload cup. The load-and-unload cup may be configured to move to and from the wafer carriers in a ... | 09/22/2009 |
| 7591710 | Polishing machine comprising a work chamber and a platform A polishing machine for optical elements, comprising: a spindle arranged to rotationally drive an optical element; a polishing tool mobile relative to the spindle; wherein the polishing machine further comprises a ... | 09/22/2009 |
| 7572170 | Low load swinging mechanism for a sander The invention relates to a low load swinging mechanism for a sander. The sander includes a roller unit that has a positioning base provided with two sliding rails for contacting with a connecting member of a sliding base. The sliding rail has an arc surface and the ... | 08/11/2009 |
| 7568969 | Locking mechanism of linear motor travel slider and processing machine A locking mechanism of a linear motor travel slider, includes: a serration member having a teeth portion and disposed on one of the bed and the travel slider extending in a slider-traveling-direction; a bracket supported by the other of the bed and the travel slider... | 08/04/2009 |
| 7559824 | Chemical mechanical polishing devices, pad conditioner assembly and polishing pad conditioning method thereof Chemical mechanical polishing (CMP) devices, a pad conditioner assembly and a polishing pad conditioning method thereof are provided. The CMP device planarizes a wafer by rotating a carrier, which has a wafer mounted on a lower surface of the carrier, over a rotatin... | 07/14/2009 |
| 7540801 | Oscillating grinding machine The present invention relates particularly to an oscillating grinding machine. The grinding machine comprises a driving motor (3) surrounded by a body (3), and a drive shaft (4) cooperating with the driving motor. The drive shaft comprises a gri... | 06/02/2009 |
| 7530881 | Eccentric stroke adjusting mechanism The present invention relates to an eccentric stroke adjusting mechanism for use in a power tool with a principle drive shaft comprising a first and a second eccentric member mounted on the principle drive shaft respectively and a coupling member for connecting the ... | 05/12/2009 |
| 7530883 | Fixture for grinding machines A fixture for grinding machines includes a first base (10), a second base (20) and a driving component (40). The first base defines a first working groove (11) therein. The second base defines a second working groove (21) correspon... | 05/12/2009 |
| 7530882 | Grinding method and grinding machine A grinding method of a rotating workpiece W having a cylindrical part 20 and a pair of end faces 21 at both sides of the cylindrical part 20 uses a grinding wheel 10 whose grinding stone is narrower than a finishing width S1 betwee... | 05/12/2009 |
| 7503832 | Linear sander A linear sander has a base, at least one rough abrasive assembly, at least one fine abrasive assembly and a reciprocating device. The base has two sides and a belt. Each rough abrasive assembly is mounted on the base above the belt and has a rotating axle and an abr... | 03/17/2009 |
| 7494399 | Single-step fiber grinding process and apparatus A fiber grinding process includes: contacting an end of the optical fiber with a grinding surface in such a manner that a central axis of the optical fiber at the end is inclined to the grinding surface; rotating the optical fiber about the central axis; and changin... | 02/24/2009 |
| 7491115 | Indexing device for performing operational tasks on a tool element An indexing device for successively positioning a tool element relative to an apparatus adapted to perform a series of operational tasks on said tool element comprises a base, a reciprocally movable support mounted on the base, a fixing member adjustably mounted on ... | 02/17/2009 |
| 7491114 | Fiber optic polisher A fiber optic polishing apparatus is disclosed including a single degree-of-freedom (DOF) gear transmission system, a pressurizing module, a fixture module, and a housing assembly motorized polisher. The single DOF gear transmission system would enable a fiber optic... | 02/17/2009 |
| 7481697 | Head slider and method of manufacturing same A head slider having an air inlet end and an air outlet end includes a rail having a flat air bearing surface for generating floating force when the disk rotates, the rail being disposed on a disk-facing surface; and an electromagnetic transducer disposed near the a... | 01/27/2009 |
| 7462092 | Method of finishing bevel gears to produce a diffuse surface structure A method for providing a surface structure wherein conventional grinding micro scratches are broken up to provide a diffuse structure of micro scratches and micro flats resulting from grinding wheel motion comprising an eccentric revolving of the grinding wheel and/... | 12/09/2008 |
| 7455569 | Grinding and polishing machine for grinding and/or polishing workpieces to an optical quality A grinding and polishing machine, in particular for lenses, has at least one tool spindle and at least one workpiece. The tool spindle is constructed to hold a respective tool on the same axis at both ends and is mounted in a spindle housing which can be pivoted abo... | 11/25/2008 |
| 7452263 | Grinding method A method of grinding the outer circumferential surface of a workpiece 5 formed of a hard and brittle material into a predetermined shape using a grinding wheel while rotating the workpiece 5 is disclosed. The method includes plunge grinding the workpie... | 11/18/2008 |
| 7442111 | Polishing pad, platen, method of monitoring, method of manufacturing, and method of detecting A polishing pad, platen, method of monitoring, method of manufacturing, and method of detecting using a pseudo window area, where the pseudo window area has a thickness less than a thickness of a polishing layer and a thickness greater than zero. ... | 10/28/2008 |
| 7438628 | Device and control unit for belt sanding systems A belt sanding system comprising a segmented sanding block including a plurality of individually controllable segments and one or more sanding belt deflecting rollers, a plurality of sensing elements corresponding to the plurality of segments, and a device for inter... | 10/21/2008 |
| 7438775 | Lens layout block device A lens layout block device comprising a seal feeding device that supplies an elastic seal to a seal sticking position (A5). The elastic seal is loaded in a tape loading part in the form of a seal tape covered by a mount and a protective sheet and wound in a r... | 10/21/2008 |
| 7435159 | Rotary jig A jig intended in use to hold a series of blanks of rod-like or wire-like form during machining, the jig having a body adapted to be mounted to a drive shaft for rotation of the body about an axis of rotation, the body having a perimeter which on rotation of the jig... | 10/14/2008 |
| 7435158 | Initial position setting method of grinding wheel in vertical double disc surface grinding machine The present invention provides an initial position setting method of grinding wheels, before starting a grinding operation, in a vertical double disc surface grinding machine for surface grinding the upper and lower grinding surfaces of a work-piece simultaneously b... | 10/14/2008 |
| 7435157 | Grinding machine, computer software to operate such a machine, and their uses therefor An extremely precise computer controlled grinding machine having the capability to write its own computer programs for controlling the grinding machine to perform individual tasks, including both grinding and dressing to several millionths of an inch. A new device f... | 10/14/2008 |
| 7435160 | Automated floor sander The automated floor sander includes numerous devices and mechanisms to facilitate the task of the operator of the machine. The machine includes a variable speed drive mechanism, enabling the operator to select the desired travel speed over the surface in order to op... | 10/14/2008 |
| 7431632 | Control system and method for processing jewelry and the like A control system for controlling processing of workpieces such as jewelry has gantry and gimbal units having x, y, z translational and x, y, z rotational degrees of freedom, the units carrying a gripper for holding a piece of jewelry. Drive motors are associated wit... | 10/07/2008 |
| 7431634 | Platen assembly, apparatus having the platen assembly and method of polishing a wafer using the platen assembly In a platen assembly for a polishing apparatus, a platen supports a polishing belt that makes contact with an object during a polishing process, so that the platen provides a pressure on the polishing belt during the polishing process. A plurality of first bladders ... | 10/07/2008 |
| 7429208 | Automated system for precision grinding of feedstock A grinding system for grinding feedstock includes a transport apparatus, a grinding apparatus, and a controller. The transport apparatus continuously transports feedstock of an arbitrarily long length at a desired feed rate, and the grinding apparatus grinds the fee... | 09/30/2008 |
| 7422510 | Lens machining machine The invention relates to a machining machine for lenses, which comprises a first workpiece drive, configured as the transport receptacle and having a workpiece spindle, a workpiece changer for exchanging workpieces between the workpiece drive and a workpiece stock, ... | 09/09/2008 |
| 7416474 | Planarization apparatus The present invention is a planarization apparatus for planarizing a coating film applied on a substrate before the coating film is hardened, including a contact body such as a brush or sponge brought into contact with a front surface of the coating film on the subs... | 08/26/2008 |
| 7416475 | Method for rough-honing the peripheral surface of a bore The invention relates to a method for rough-honing the peripheral surface (3) of a bore (2). According to said method, a honing tool (5) is introduced into the bore (2), the longitudinal axis (MB) of the bore (2) before ... | 08/26/2008 |