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 |
| 8333512 | Self-compensating hydrostatic planar bearing device and method thereof A self-compensating hydrostatic planar bearing device comprises: a flow restrictor, disposed on a slide-table, having a flexible supporting unit extendedly formed on an end thereof; a first chamber, formed on another end of the flow restrictor opposite to that of th... | 12/18/2012 |
| 8297842 | Air guide An air guide includes a slide member and a guide track. The guide track defines a guide hole slidably receiving the slide member. The guide track defines an air intake in an outer surface, a plurality of air outlets in an inner surface opposite to the sliding member... | 10/30/2012 |
| 8282281 | Air bearing with consideration of high-frequency resonances A vertically and horizontally effective air bearing comprising a base, an interface part that is movably arranged on the base, a piston that is movably arranged inside the interface part and supports a load, and a coupling element that couples the piston with the lo... | 10/09/2012 |
| 8277123 | Fluid bearing structure and method of forming bearing concaves in fluid bearing structure A fluid bearing structure with uniform depths of bearing concaves and a method of forming the bearing concaves in the fluid bearing structure. Pipe parts are inserted into through holes formed in the bearing base to form fluid spout holes for spouting fluid between ... | 10/02/2012 |
| 8267582 | Table guided by aerostatic bearing elements for vacuum application A table for vacuum application which is guided by aerostatic bearing elements, having a fixedly mounted supporting structure and a tabletop which is displaceable in x-direction and y-direction with respect to the fixedly mounted supporting structure by means of slid... | 09/18/2012 |
| 8167491 | Hydrostatic mounting A hydrostatic mounting of longitudinally displaceably arranged machine parts, which have pressure pockets for hydraulic fluid for building up a hydrostatic pressure between two machine parts, gaps connected to the pressure pockets and delimited by gap faces of the t... | 05/01/2012 |
| 8136992 | Hydrostatic mounting A hydrostatic mounting of longitudinally displaceably arranged machine parts, which have pressure pockets for hydraulic fluid for building up a hydrostatic pressure between two machine parts, gaps for the hydraulic fluid which are adjacent to the pressure pockets an... | 03/20/2012 |
| 8043007 | Hydrostatic profile rail guide Hydrostatic profile rail guide with a guide carriage that is hydrostatically mountable on a guide rail, whereby the guide carriage features a back and two sides that are attached to the back, between which the guide rail is located, whereby the back features a mount... | 10/25/2011 |
| 7946767 | Hydrostatic bearing and stage apparatus A hydrostatic bearing configured to slide along a sliding surface of a structural body in a non-contact manner, the hydrostatic bearing includes a jetting part having a jetting surface configured to jet air onto the sliding surface; and a suction part having a sucti... | 05/24/2011 |
| 7922392 | Hydrostatic profile rail guide A hydrostatic profile of a rail guide with a guide carriage. Viewed in cross-section through the rail guide, there is an imaginary first straight line parallel to the mid-surface, an imaginary second straight line parallel to an upper bearing surfaces and a third im... | 04/12/2011 |
| 7845853 | Hydrostatic bearing A hydrostatic bearing for supporting horizontal and vertical forces, with a guide rail (2) and a support element (1) with a hydrostatic mounting on the guide rail, whereby the angle α between the head side and the lateral guide surfaces (6, 8) ... | 12/07/2010 |
| 7785009 | Slide guiding device A slide guiding device in a machine tool includes slide guiding surfaces provided on a bed, sliding surfaces provided on a column, which is guided on the bed for movement on the same, and movable on the slide guiding surfaces, oil grooves each with a first supply ho... | 08/31/2010 |
| 7722256 | Flat surface air bearing assembly An air bearing assembly includes: an upper portion having a plurality of air supply and vacuum holes therethrough; a lower portion; and a plurality of spacers disposed between and maintaining the upper and lower portions in spaced relation, wherein a density of the ... | 05/25/2010 |
| 7682081 | Sliding bearing with improved surface topography A sliding bearing comprises two opposite bearing surfaces (3, 4) which enclose a gap (6) containing a lubricant film (5), the bearing surfaces (3, 4) being moveable with respect to each other in a generally parallel fashion, at least one ... | 03/23/2010 |
| 7651272 | Method of assembling air bearing, air bearing and linear drive unit equipped with the same A method of assembling an air bearing, the air bearing having a guide on a fixed side, and a slider having a pair of opposing members arranged on opposite sides of the guide, the slider being float-supported so as to be able to move relative to the guide, the method... | 01/26/2010 |
| 7311036 | Pneumatic cylinder A pneumatic cylinder has a shaft member having a piston and a piston rod combined with each other in an axial direction, a cylinder body supporting the shaft member with the piston rod protruding outwardly therefrom so as to freely reciprocate linearly, and porous a... | 12/25/2007 |
| 7311444 | Hydrostatic bearing for linear motion guidance A self-compensating hydrostatic (pressurized fluid film) linear bearing that maintains a fluid gap between a carriage and a rail when relative forces are applied. The geometric shape of the rail and mating carriage enable the bearing to have very high stiffness and ... | 12/25/2007 |
| 7290931 | Vacuum pre-loaded pneumatic bearing with onboard vacuum generator A pneumatic bearing for supporting a payload is disclosed. The pneumatic bearing comprises a bearing body having an active surface divided into a lift portion and a pre-load portion. A plurality of gas distribution channels are formed in the bearing body, wherein a ... | 11/06/2007 |
| 7287906 | Hydrostatic bearing for linear motion guidance A self-compensating hydrostatic (pressurized fluid film) linear bearing that maintains a fluid gap between a carriage and a rail when relative forces are applied. The geometric shape of the rail and mating carriage enable the bearing to have very high stiffness and ... | 10/30/2007 |
| 7284906 | Exhaust apparatus and control method for same, and vacuum-use hydrostatic bearing An exhaust apparatus for a differential exhaust mechanism having a labyrinth seal and a plurality of vacuum pockets includes a differential exhaust system for evacuating the vacuum pockets and an exhaust system for evacuating a chamber of exhaust gas. The differenti... | 10/23/2007 |
| 7284907 | Gas bearing system A gas bearing system comprising two opposing substantially parallel bearing surfaces (2, 3) and at least one gas duct (6) for supplying gas through an orifice (7) to the bearing gap (5) between the bearing surfaces (2, 3). At least... | 10/23/2007 |
| 7281535 | Saw singulation Improved systems and methods for singulating a substrate into a plurality of integrated circuit devices are disclosed. One aspect of the invention corresponds to a fixture that holds the substrate during the dicing process. Another aspect of the invention pertains t... | 10/16/2007 |
| 7275870 | Air bearing structure and linear driving device using said air bearing structure The length of the bearing surface in the movable portion which moves linearly is larger than the length of the bearing surface in the fixed portion by the stroke of the movement. With this configuration, the bearing surface on the side of the fixed portion always op... | 10/02/2007 |
| 7275871 | Fluid dynamic bearing structure and method of adjusting bearing gap A bolt insertion hole is provided along an edge end portion on a flat surface of a plate-like member, and a tap hole is provided on an end face of the other edge end correspondingly to the bolt insertion hole. A bolt is inserted into the bolt insertion hole and scre... | 10/02/2007 |
| 7255478 | Transporting apparatus A transporting apparatus which can horizontally transport a carrier using an air bearing of which a rotational degree of freedom is kept relative to a surface of a base. The transporting apparatus is movable along a surface of a base and includes an air bearing plac... | 08/14/2007 |
| 7249889 | Sliding guide apparatus A sliding guide apparatus guides a movable member for a base. A pair of guide surfaces are formed on the base. A pair of sliding surfaces are formed on the movable member as so to be opposed to the pair of guide surfaces, respectively. Lubricating oil is supplied be... | 07/31/2007 |
| 7247848 | Electron beam apparatus and method of manufacturing semiconductor device using the apparatus The present invention provides an electron beam apparatus for evaluating a sample surface, which has a primary electro-optical system for irradiating a sample with a primary electron beam, a detecting system, and a secondary electro-optical system for directing seco... | 07/24/2007 |
| 7245455 | Center split feature and pressurization for altitude insensitivity, high pitch torque and high preload sensitivity air bearing slider The present invention is directed to a bearing surface on a slider having a center split pressurization feature which minimizes the effects of altitude or change in ambient air pressure on the flying characteristics of the slider. After a cavity dam and a subambient... | 07/17/2007 |
| 7244932 | Electron beam apparatus and device fabrication method using the electron beam apparatus The purpose of the invention is to provide an improved electron beam apparatus with improvements in throughput, accuracy, etc. One of the characterizing features of the electron beam apparatus of the present invention is that it has a plurality of optical systems, e... | 07/17/2007 |
| 7232286 | Seal device and method for operating the same and substrate processing apparatus comprising a vacuum chamber The present invention provides a seal device comprising a sealing passage which allows communication between a first space and a second space, and evacuation lines individually connected to the first space and the sealing passage. A gas feed line for feeding dry gas... | 06/19/2007 |
| 7232257 | Hydrostatic bearing and stage apparatus using same A hydrostatic bearing apparatus has a hydrostatic bearing pad, a labyrinth seal part having an exhaust groove provided around the outside of the hydrostatic bearing pad, an adjustment mechanism for adjusting a labyrinth seal part gap, non-contacting displacement gau... | 06/19/2007 |
| 7228594 | Fluid levitating caster integrating load lifting device A fluid levitating caster lifts a heavy load “(17)” off a floor “(18)” with near friction-less-ness for transport has integrated a load lifting device. This extra rise height “(ER)” lifting feature accommodates moving loads “(17)... | 06/12/2007 |
| 7223973 | Apparatus for inspection with electron beam, method for operating same, and method for manufacturing semiconductor device using former A substrate inspection apparatus 1-1 (FIG. 1) of the present invention performs the following steps of: carrying a substrate “S” to be inspected into an inspection chamber 23-1; maintaining a vacuum in said inspection chamber; ... | 05/29/2007 |
| 7207720 | Static gas bearing system, stage mechanism, exposure apparatus, and device manufacturing method An apparatus includes a static gas bearing provided upon a first object and configured to form a gas layer between the first object and a second object by use of gas supplied thereto, and to support the first object movably relative to the second object, a plurality... | 04/24/2007 |
| 7198141 | Shock absorbing apparatus in a positioning apparatus A shock absorbing apparatus in a positioning apparatus including a stage apparatus is disclosed. The positioning apparatus includes a main body apparatus for mounting the stage apparatus thereto, and a chamber for maintaining a region, in which the stage apparatus i... | 04/03/2007 |
| 7189002 | Hydrostatic gas bearing, hydrostatic gas bearing device for use in vacuum environment, and gas recovering method for hydrostatic gas bearing device In a hydrostatic gas bearing for use in a vacuum, in order to provide a hydrostatic gas bearing in which an increase in the quantity of gas being discharged during the movement of a moving body is reduced, the surface of a guide shaft of a fixed body and/or the surf... | 03/13/2007 |
| 7168358 | Static pressure sliding block A static pressure sliding block which can exhibit a stable function for a long time while flow control member 23 is pressed onto recess surface 21b of static pressure receiving surface 21a for fixing it onto main body 21 for... | 01/30/2007 |
| 7160622 | Oil repelling agent An oil repelling agent to coat a dynamic pressure device, such as a fluid dynamic pressure bearing device, includes a UV coloring agent, a fluorine-based polymer and a solvent. In an exemplary embodiment of the invention, the concentration of the UV coloring agent c... | 01/09/2007 |
| 7155825 | Method of liquid withdrawal from a tool spindle A method for withdrawing liquid from the liquid bearings of a spindle (1) carried in liquid bearings (3, 5) distinguished in that with the help of pressurized gas, the liquid, together with the gas, is forced to exit the spindle during the operation of... | 01/02/2007 |
| 7144160 | Hydrodynamic bearing apparatus and stage apparatus using the same A plurality of preload magnet units are arranged on each side of a hydrodynamic bearing symmetrically. Preload magnet units are arranged inside a labyrinth partition to surround the hydrodynamic bearing in a non-air atmosphere. ... | 12/05/2006 |
