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 |
| 7377839 | Cover for guiding a medium in an abrasive disk The invention relates to a grinding-wheel cover (3) for grinding wheels with a support body (1) and a grinding layer (2) arranged at an edge or face for edge or face use in grinding, a grinding-wheel cover being provided for forming cavities on ... | 05/27/2008 |
| 7371034 | Drilling attachment A drilling attachment for use in wet and dry drilling operations includes a housing having first and second fluid conduits, and a drive shaft mounted within the housing and having fluid transmitting first and second end portions in fluid communication with a respect... | 05/13/2008 |
| 7300342 | Scratch removal device and method A polishing wheel including a lower polishing surface and defining a different color from a secondary portion of the polishing wheel, so as to indicate wear of the polishing surface. The polishing surface includes a plurality of main radial flutes extending from a c... | 11/27/2007 |
| 7291061 | Manual power grinder, in particular a battery-powered manual power grinder A manual power grinder has a housing, a motor received in the housing, a grinding disc driven by the motor and located on an underside of the motor; a drive shaft arranged so that said drive shaft and the motor are located parallel to one another and vertically to t... | 11/06/2007 |
| 7291062 | Manual power grinder, in particular a battery-powered manual power grinder A manual power grinder has a housing, a motor received in the housing, a grinding disk driven by the motor and located on an underside of the motor, a drive shaft arranged so that the drive shaft and the motor are located parallel to one another and vertically to th... | 11/06/2007 |
| 7254996 | Method and apparatus for testing rubber tires or solid rubber wheel laboratory samples A method and apparatus for testing rubber tires includes an abrader for rubbing against the surface of the tire and an eraser for removing particles of rubber left on the abrading surface by the tire. The eraser has the capability of absorbing oil or wax included in... | 08/14/2007 |
| 7252581 | Power tools It is accordingly an object of the invention to provide a technique of cooling a power tool which further improves cooling effectiveness of the power tool. According to the invention, a power tool is provided that includes a driving motor, a tool bit, a power transm... | 08/07/2007 |
| 7220161 | Automatic sharpening system for ice-skates A method is for using a skate-grinding device. The method provides an automatic sharpening system (10) that has grip members (14, 16) and a grinding wheel (28). A blade (18) of a skate (20) is inserted into a groove (19). Th... | 05/22/2007 |
| 7204244 | Diamond core drill bit A diamond core drill bit (100) is disclosed. The drill bit has a right-circular cylindrical body (120) with at least one side lubrication hole (122) toward the bottom of the body and a plurality of parallel grooves (124) oriented in an ax... | 04/17/2007 |
| 7204917 | Workpiece surface influencing device designs for electrochemical mechanical processing and method of using the same The present invention is directed to a top surface of a workpiece surface influencing device and a method of using the same. The top surface of the workpiece surface influencing device is adapted for use in an electrochemical mechanical processing apparatus in which... | 04/17/2007 |
| 7186173 | Tool particularly for milling operations A tool, particularly for milling operations, capable of being driven in rotation about its own main axis. The tool has a core provided with a plurality of abrasive elements extending from the core radially to the axis and spaced apart from each other angularly. Betw... | 03/06/2007 |
| 7172501 | Flapped grinding disk A flapped grinding disk having a disk- or plate-shaped support including an outer periphery, and a plurality of spaced-apart, discrete groups of grinding flaps forming a plurality of apertures, wherein the flaps overlap each other on the support in the manner of shi... | 02/06/2007 |
| 7172142 | Nozzles, and components thereof and methods for making the same Various nozzles, components of nozzles, and methods, materials and devices for making them are disclosed. ... | 02/06/2007 |
| 7153187 | Metal machining apparatus and laser-targeted coolant nozzle employed therewith A metal machining apparatus for removal of metal from a workpiece, that employs a laser-targeted coolant nozzle to apply coolant fluid to a machining tool, such as a grinding wheel, to remove metal from a workpiece. The laser-targeted coolant nozzle has a coolant no... | 12/26/2006 |
| 7137872 | Scratch removal device and method A polishing wheel including a lower polishing surface and defining a different color from a secondary portion of the polishing wheel, so as to indicate wear of the polishing surface. The polishing surface includes a plurality of main radial flutes extending from a c... | 11/21/2006 |
| 7125328 | Glass grinding bit A glass grinding bit includes a monolithic plastic body having a first end, a second end and a central longitudinal axis. A central bore formed as part of the body in alignment with the longitudinal axis for receiving a drive shaft. An outer surface is formed as par... | 10/24/2006 |
| 7101258 | Double sided polishing machine Double-sided polishing machine with an upper and a lower working disc, each comprising a polishing disc and a carrier disc. The working disc are co-axially arranged and rotatable relative to each other, a polishing gap being formed between the polishing discs. Said ... | 09/05/2006 |
| 7086930 | Coherent jet nozzles for grinding application A nozzle assembly and method is configured to apply coherent jets of coolant in a tangential direction to the grinding wheel in a grinding process, at a desired temperature, pressure and flowrate, to minimize thermal damage in the part being ground. Embodiments of t... | 08/08/2006 |
| 7051426 | Method making a cutting disk into of a substrate The described embodiments relate to methods and systems of forming slots in a substrate. One exemplary embodiment forms a feature into a substrate having a first substrate surface and a second substrate surface, and moves a sand drill nozzle along the substrate to r... | 05/30/2006 |
| 7014528 | Grinding machine and grinding fluid supply-nozzle therefor It is one object of a grinding machine and a grinding fluid supply-nozzle therefor according to the present invention to supply grinding fluid to a moving grinding point reliably, even if the surfaces of a grinding wheel is abraded up. A wheel head 5 a... | 03/21/2006 |
| 7004157 | Rotary cutting saw with improved heat dissipation performance A rotary cutting saw including: (a) a base disk which has a plurality of apertures formed therethrough and opening in axially opposite end surfaces thereof; (b) a plurality of abrasive segments which are fixed to an outer circumferential surface of the base disk; an... | 02/28/2006 |
| 7004829 | Flapped grinding disk The flapped grinding disk comprises a disk- or plate-shaped support and grinding flaps which overlap each other on the support in the manner of shingles and which are secured in an adhesive bed. Apertures are cut away on the periphery of the flapped grinding disk, t... | 02/28/2006 |
| 6991523 | Coolant nozzle A coolant nozzle is used on a machine tool having a rotating bit of convoluted longitudinal profile for cutting a number of slots in a disk. The nozzle includes at least one coolant inlet and at least one coolant outlet. The coolant outlet has a convoluted section a... | 01/31/2006 |
| 6949012 | Polishing pad conditioning method and apparatus A method and apparatus is provided that comprises an improved substrate polishing pad conditioning plate. In one embodiment, the conditioning plate contains multiple channels interposed between the abrasive surfaces so as to manage slurry and debris to resist cloggi... | 09/27/2005 |
| 6928860 | Heat-transfer-inhibiting motor and rotor Heat-inhibition respecting a motor is provided in connection with a heated instrument through a stand-off mount system and/or a heat-inhibiting rotor/stirrer. The instrument can be a hot bath containing instrument where stirring of the contents of the bath can be ca... | 08/16/2005 |
| 6881131 | Method and apparatus for diamond wire cutting of metal structures A method and apparatus for diamond wire cutting of metal structures, such as nuclear reactor vessels, is provided. A diamond wire saw having a plurality of diamond beads with beveled or chamfered edges is provided for sawing into the walls of the metal structure. Th... | 04/19/2005 |
| 6814657 | Grinding wheel with grinding members A grinding wheel has a flat, circular carrier surface (1) on which a plurality of elongated grinding members (2) are arranged running least partially radially. A discharge opening (3) is disposed ahead of each of the grinding members (2) ... | 11/09/2004 |
| 6739960 | Turbine ported grinding wheels The present invention relates to a ported grinding wheel for use on a grinding machine. The grinding wheel comprises at least one fluid inlet port located on a first surface of the grinding wheel, a plurality of fluid outlet ports on a working surface of the grindin... | 05/25/2004 |
| 6620034 | Way to remove Cu line damage after Cu CMP The invention provides a method and an apparatus that prevent the accumulation of copper ions during CMP of copper lines by performing the CMP process at low temperatures and by maintaining this low temperature during the CMP process by adding a slurry th... | 09/16/2003 |
| 6533647 | Method for controlling a selected temperature of a planarizing surface of a polish pad. A method for controlling a polishing characteristic of a polishing pad used in planarization of a substrate. The method preferably includes controlling the temperature of a planarizing surface of the polishing pad so that waste matter accumulations on the... | 03/18/2003 |
| 6454636 | Method and apparatus for supplying coolant in a grinding machine In a method and an apparatus for supplying coolant in a grinding machine while the grinding machine grinds, a cooling nozzle and a cleaning nozzle are mounted on a moving member, and the moving member is moved in a direction identical with a first normal ... | 09/24/2002 |
| 6447383 | Sanding apparatus with an improved vibration insulating mechanism A finishing orbital sander (1) includes a main body (2) and a base (12) provided below the main body. Provided between the main body and the base are a plurality of foot assemblies (22). Each assembly in turn includes a cylindrical or columnar foot (23) m... | 09/10/2002 |
| 6443817 | Method of finishing a silicon part An improved method of finishing a silicon part utilizes a rotatable grinding wheel having diamond particles and a bonding agent, and a plurality of grit materials. The grinding wheel is dressed to form a wheel with a grinding surface having a plurality of... | 09/03/2002 |
| 6371100 | Machining apparatus capable of saving different fluids in machining In order to provide a machining apparatus which can save fluids such as water, compressed air and clean air, it comprises at least a spindle unit including a rotary spindle having a machining element attached thereto for effecting a required machining wor... | 04/16/2002 |
| 6358119 | Way to remove CU line damage after CU CMP The invention provides a method and an apparatus that prevent the accumulation of copper ions during CMP of copper lines by performing the CMP process at low temperatures and by maintaining this low temperature during the CMP process by adding a slurry th... | 03/19/2002 |
| 6322430 | Apparatus for resurfacing compact discs An apparatus and method for re-surfacing compact discs. The method is a two-step method in which the disc to be re-surfaced is first placed on a shaft. A resilient pad supports an abrasive medium and is positioned so the abrasive medium overlaps only the ... | 11/27/2001 |
| 6312325 | Sanding disks Accessories for an angle grinder include a disposable rotary sanding disk having quite large shaped ventilating/viewing apertures, for use with a resilient backing plate also having shaped ventilating apertures. The apertures of one or both parts are shap... | 11/06/2001 |
| 6299522 | Grinding wheel for use in grinding apparatus A grinding wheel having dust discharge-impelling blades which are able to impel to discharge the dust produced during the grinding operation to a dust collection machine to decrease dispersing dust in the air, and increase the cooling efficiency of the gr... | 10/09/2001 |
| 6200198 | Method of cutting of metal materials and non-metal materials in a non-combustible gas atmosphere A method of cutting metal materials and non-metal materials in a non-combustible gas atmosphere, the method including forming a non-combustible gas atmosphere, providing the non-combustible gas atmosphere to at least one of a cutting part of a machine too... | 03/13/2001 |
| 6171179 | Ball grinding machine A ball grinding machine for grinding ceramic bearing balls and the method thereto employing a non-rotating upper circular plate and a rotating lower circular plate to perform precision grinding of ceramic balls. The grinding mechanism according to the pre... | 01/09/2001 |
