Class / Patent application number | Description | Number of patent applications / Date published |
384119000 | Resilient mounting member or seal | 12 |
20090092347 | FLUID DYNAMIC BEARING DEVICE - A fluid dynamic bearing device capable of exercising high bearing performance is provided at low cost. | 04-09-2009 |
20100142869 | Fluid Pumping Capillary Seal For A Fluid Dynamic Bearing - An apparatus and method are provided for a robust and shock resistant fluid dynamic bearing. A fluid sealing system with fluid pumping and capillary features provides increased reliability and performance for small form factor disc drive memory systems. Concerns of motor jog are addressed, jog being the rapid and repeated opening and closing of spaces between relatively rotatable components that can dispel oil from, or draw air into, these spaces. The fluid pumping capillary sealing system includes a fluid pumping groove with a rib portion and a slot portion for pumping fluid. The fluid pumping capillary sealing system also includes a capillary seal. In an aspect, a sweeping rib sweeps fluid toward the bearing. A truncated rib is situated adjacent to the sweeping rib, the truncated rib extending a shorter radial distance as compared to the sweeping rib and forming a plenum region. | 06-10-2010 |
20110007989 | DISK DRIVE DEVICE PROVIDED WITH FLUID DYNAMIC BEARING UNIT - A bearing unit for a disk drive device is formed by a sleeve concave portion and a shaft concave portion, and is provided with a capillary seal portion in which the gap between the sleeve concave portion and the shaft concave portion is increased in diameter toward the hub side of the sleeve. Assuming that: the outer circumferential diameter at the tilt starting end on the base member side of the shaft concave portion is D | 01-13-2011 |
20140056548 | ROTARY DEVICE - A rotary device includes a fixed body including a shaft; a rotary body including a sleeve being configured to surround the shaft through lubricant; and first and second taper seals provided in a space between the fixed body and the rotary body in which gas-liquid interfaces of the lubricant exist, respectively, when the rotary device is operated, the first and taper seals being configured such that a lower limit of a filling ratio of the second taper seal corresponds to a predetermined range of the filling ratio of the first taper seal including its lower limit of the filling ratio, and an upper limit of the filling ratio of the second taper seal corresponds to a predetermined filling ratio of the first taper seal that is larger than an upper limit of the predetermined range and lower than an upper limit of the first taper seal. | 02-27-2014 |
20140072250 | BEARING ASSEMBLY, FAN, AND METHOD FOR GUIDING A SHAFT - A bearing assembly includes a bearing formed to at least radially guide a shaft, a seat for the bearing, an annular gap around the bearing between the bearing and the seat that allows the bearing to undergo a movement perpendicular to an axis of the bearing, a magnetorheological fluid in the gap and a magnetic field source configured to subject the magnetorheological fluid to a magnetic field. Also, a method of controlling a strength of the magnetic field generated by the magnetic field source to control a viscosity of the magnetorheological fluid and affect an operating condition of the bearing assembly. | 03-13-2014 |
20140294329 | AIR BEARING FOR USE AS SEAL - In order to effect a seal; a porous material which comprises one side of two opposing surfaces is used to restrict and evenly distribute externally pressurized gas, liquid, steam, etc. between the two surfaces, exerting a force which is opposite the forces from pressure differences or springs trying to close the two faces together and so may create a non contact seal that is more stable and reliable than hydrodynamic seals currently in use. | 10-02-2014 |
20150104123 | JOURNAL BEARING ASSEMBLIES AND METHODS OF ASSEMBLING SAME - A journal bearing assembly includes a bearing housing, a plurality of bearing pads, and a plurality of bearing pad support assemblies. The bearing housing includes a radial outer wall. The plurality of bearing pads are mounted within the bearing housing, and include at least one of a gas permeable porous media and an array of gas delivery holes. The plurality of bearing pad support assemblies are radially interposed between the bearing pads and the radial outer wall. Each of the bearing pad support assemblies includes a spring assembly and a damper assembly. | 04-16-2015 |
20150104124 | HERMETICALLY SEALED DAMPER ASSEMBLY AND METHODS OF ASSEMBLING SAME - A hermetically sealed damper assembly includes a sealed damper housing, a plunger, and a load transferring member coupled to the plunger. The sealed damper housing includes a body having a cavity and a resistive flow path defined therein. The cavity and resistive flow path are filled with a viscous fluid. The body includes a plurality of springs integrally formed therein. The plunger is disposed within the cavity, and separates the cavity into a first control volume and a second control volume. The resistive flow path provides fluid communication between the first and second control volumes. The plunger is coupled to the damper housing by the plurality of springs such that the springs provide a restorative force to the plunger. The load transferring member is configured to transmit mechanical loads to the plunger. | 04-16-2015 |
20150117802 | DEVICE OF THE AXIAL-DIRECTIONAL OIL CHAMBER OF HYDROSTATIC SPINDLE - A device of the axial-directional oil chamber of hydrostatic spindle comprises integrated oil seal structures at both the axial direction and the radial direction. The oil seal structures increase the work area of the oil chamber by extending and thus connecting an axial-directional oil seal edge to a radial-directional oil seal edge. Then, the rigidity of the axial hydrostatic bearing can be increased, and thus the application capability of the hydrostatic spindle can be upgraded to perform the multi-task machining from the mono-task machining. | 04-30-2015 |
20150117803 | AIR PRESSURE BEARING - An air pressure bearing including a bearing including an outer bearing race and inner bearing race with a bearing gap therebetween, mounted between an outer race support ring and inner race support structure. Pressurized air is monitored, for example air pressure and flow rate, and supplied to the bearing and exhausted from the bearing. A control module is used to adjust characteristics of the pressurized air to achieve design application parameters, such as load carrying, stiffness and dampening. A method of controlling an active air pressure bearing is also described, including providing and monitoring pressurized air and adjusting air supply to meet application design parameters. | 04-30-2015 |
20150377297 | SLIDING PARTS - A positive pressure generation mechanism includes a positive pressure generation groove provided on a high pressure side of one of sealing faces of a pair of sliding parts including annular bodies that relatively slide on each other, a negative pressure generation mechanism including a negative pressure generation groove provided on a low pressure side, a pressure release groove provided between the positive pressure generation groove and the negative pressure generation groove, and a radial groove that provides communication between the positive pressure generation groove. | 12-31-2015 |
20160169281 | BEARING HAVING INTEGRALLY FORMED COMPONENTS | 06-16-2016 |