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| Number | Title | Issue Date |
| 7401982 | Bearing with pass or fail wear gauge A bearing includes an inner race having a rotational axis and an outer race sharing the rotational axis of the inner race. Rolling bearing members are constrained between the inner race and the outer race. A retention lip is provided which is adapted to maintain a p... | 07/22/2008 |
| 7314100 | System for use in a bore hole for axially coupling a tubular end and a mandrel System for coupling two tubular ends for use in a well bore, the system comprising a first tubular end, a second tubular end for inserting into the first tubular end in axial alignment thereof, thereby forming an annular space between the first tubular end and the s... | 01/01/2008 |
| 7278211 | Bore hole tool assembly and method of designing same A bore hole tool assembly utilizes a multi-stage bearing system deployed between an inner mandrel and an outer tool housing wherein each bearing stage includes bearing element deployed between two deformable elements. The deformable elements are selected, based on t... | 10/09/2007 |
| 7217129 | Medical or dental-medical handpiece having at least one rotary part The invention relates to a medical or dental-medical handpiece having a rotary part, in particular a turbine rotor. In order to improve the handpiece with regard to small construction, running noise and economical construction, there is provided a roller bearing for... | 05/15/2007 |
| 7140123 | Roller and clothes drying apparatus provided with the same A roller capable of easily absorbing impact transmitted thereto while maintaining a desired level of abrasion resistance, and a clothes drying apparatus provided with the roller. The roller is provided with an impact absorption enhancer capable of causing the roller... | 11/28/2006 |
| 7104772 | Screw compressor In a screw compressor for a refrigerator, suction-side rotor shafts of screw rotors are supported rotatably by angular ball bearings for forward thrust load, an annular gap is formed between the angular ball bearings and a suction-side bearing casing, and outermost ... | 09/12/2006 |
| 7104698 | Thrust bearing for down-hole tool There is disclosed an improved bearing and particularly an improved bearing assembly (15, 15A), eg. a thrust bearing assembly, which may be used in down-hole applications, such as down-hole drilling applications. Thrust bearing assemblies for use in down-hole... | 09/12/2006 |
| 7056030 | Pivot bearing for a swing arm of a hard disk drive device A pivot bearing includes a stepped shaft having an enlarged diameter shaft portion and a reduced diameter shaft portion; a plurality of balls of a lower row are interposed between the enlarged diameter shaft portion and a sleeve outer ring surrounding the enlarged d... | 06/06/2006 |
| 7040813 | Rolling bearing apparatus for swing arm A pair of pre-loaded ball bearings 1, 2 are fixed to a shaft 3 having a flange 3a to be a reference surface Q formed on one end, and where a clearance C is secured between the surface 1c on the flange side of the inner race ... | 05/09/2006 |
| 7036991 | High-precision spindle assembly for a davenport automatic screw machine A spindle assembly (20) adapted to be mounted on the rotatable head (21) of a Davenport® multi-spindle automatic screw machine, broadly includes a one-piece outer spindle (38), a seal member (39), a front bearing assembly (40A, | 05/02/2006 |
| 7021167 | Rotary joint mechanism A rotary joint mechanism for connecting two machine parts to effect relative movement between the two machine parts includes an outer ring adapted to be connected to a rotatable machine part, and an inner ring adapted to be connected to a fixed machine part, with th... | 04/04/2006 |
| 6799895 | Cartridge-type thrust bearing Disclosed is a self-lubricating thrust bearing having a number of axially-aligned parts. The bearing is preferably in cartridge form and includes an internal circular spring. The spring is located between two adjacent disks and functions to force the disks apart whe... | 10/05/2004 |
| 6779925 | Bearing assembly A bearing assembly for a rotatable shaft, the bearing assembly having a bearing carrier housing, the housing having a fixed first end and a removably securable second end, the first and second ends having an aperture therethrough for passage of the rotatable shaft, ... | 08/24/2004 |
| 6744605 | Low-profile pivot assembly A low-profile pivot assembly is disclosed. The assembly includes two generally coaxial bearings having differing diameters so as to define inner and outer bearings. This arrangement permits the pivot assembly to be constructed with a lower profile than conventional ... | 06/01/2004 |
| 6741001 | Spindle motor and bearing assembly The fixed shaft type spindle motor of the invention has a fixed shaft extending from a base and a rotor hub rotatably supported thereon through a bearing. Where the bearing is a compound ball bearing, a larger diameter portion of a stepped connection member is fixed... | 05/25/2004 |
| 6280537 | Ball bearing A rolling bearing composed of a combination of bearing wings formed with a steel material and rolling elements formed with a ceramic material, wherein the residual austenite amount of the steel material forming the rolling rings is controlled to a specifi... | 08/28/2001 |
| 6267512 | Suspension thrust bearing device A suspension thrust-bearing device for a telescopic suspension strut of a motor vehicle which includes a rolling bearing forming an axial thrust stop, a metal cup for accepting a suspension spring, and an elastic support block. The rolling bearing is posi... | 07/31/2001 |
| 6227714 | Compound bearing assembly for swing arm of hard disc drive A compound bearing assembly for a swing arm is disclosed, which comprises a stepped shaft 1 having a large-diameter portion 1a and a small-diameter portion 1b, the large-diameter portion 1a having an inner raceway groove 2a directly formed in the inner pe... | 05/08/2001 |
| 6050729 | Compound ball bearing A compound ball bearing comprises a bearing assembly including a spindle 1, a sleeve 2 surrounding the spindle 1, and an inner ring 6 fitted on the spindle or an outer ring fitted in the sleeve, and balls 5, 9 provided between the spindle 1 and the sleeve... | 04/18/2000 |
| 6050728 | Compound ball bearing type pulley A compound ball bearing type pulley comprises a bearing assembly including a spindle 1, a sleeve 2 surrounding the spindle 1 with outer flanges 22a, 22b formed on upper and lower ends of the sleeve and an inner ring fitted on the spindle. Balls 5, 9 are p... | 04/18/2000 |
| 5969449 | Rotary machine of inner rotor type A miniature inner rotor type of rotary machine having a high durability and anti-vibration property, includes a double row bearing apparatus (2) and comprises a stepped shaft (10). The shaft has a larger diameter shaft portion (10a) around which an inner ... | 10/19/1999 |
| 5826989 | Compound ball bearing A compound ball bearing comprises a bearing body including a spindle 1, a sleeve 2 surrounding the spindle 1, and an inner ring fitted on the spindle or an outer ring fitted in the sleeve, and balls 5, 9 provided between the spindle 1 and sleeve 2, betwee... | 10/27/1998 |
| 5820273 | Hard disc drive with a compound bearing assembly A hard disc drive is disclosed, which comprises a compound bearing assembly including stepped shaft 1 having a large-diameter portion 1a and a small-diameter portion 1b, a plurality of balls 4 provided between an outer raceway groove 2b formed in the inne... | 10/13/1998 |
| 5806989 | Compound ball bearing for swing arm unit and swing arm unit for hard disc drive device A compound ball bearing for swing arm unit acomprises a bearing assembly including a spindle 1, a sleeve 2 surrounding the spindle 1, an inner ring fitted on the spindle, with balls 5 and 9 being provided between the spindle 1 and sleeve 2, between the in... | 09/15/1998 |
| 5803618 | Compound ball bearing A compound ball bearing comprises a bearing assembly including a spindle 1, a sleeve 2 surrounding the spindle 1, and an inner ring 6 fitted on the spindle or an outer ring fitted in the sleeve, and balls 5, 9 provided between the spindle 1 and sleeve 2, ... | 09/08/1998 |
| 5690434 | Downhole tool bearing assembly A downhole tool bearing assembly is provided which utilizes a secondary annular threaded locknut and a compression ring in order to take up tolerance stack-up and to provide supplemental preload through a bearing housing assembly, thus helping to ensure a... | 11/25/1997 |
| 5667314 | Horizontal thrust bearing assembly A thrust chamber for use in a horizontal hurst apparatus or other pump apparatus is disclosed. The thrust chamber includes a housing, a rotatable shaft mounted within the housing, a first downthrust bearing section connected to the shaft and to the housin... | 09/16/1997 |
| 5639168 | Ball bearing for supporting a spindle rotating at high speed A ball bearing for supporting a spindle rotating at high speed is provided with at least one member of an inner race and a shaft having an inner raceway in an outer peripheral surface thereof, an outer race having an outer raceway in an inner peripheral s... | 06/17/1997 |
| 5540575 | High speed rotating apparatus having face-to-face angular contact ball bearings A combination of two angular type ball bearings provided in a face-to-face arrangement to form a ball bearing unit in which the diameter of the balls of the second ball bearing is less than the diameter of the balls of the first ball bearing. This ball be... | 07/30/1996 |
| 5248204 | Short stack bearing assembly A mud motor bearing assembly is disclosed for an oil-lubricated downhole drill mud motor. A number of parallel sets of angular contact ball bearings are located between the mandrel and the bearing housing in a sealed, oil-filled chamber to provide all com... | 09/28/1993 |
| 5086851 | Combination thrust and radial bearing for use in down-hole drilling tools A down-hole motor and bearing arrangement 22 includes a pair of longitudinally spaced apart bearings 26, 28 that each have multiple rows of ball bearings 36 positioned between a unitary inner race 34 and a two piece outer race 56. The race 34 includes a p... | 02/11/1992 |
| 5074681 | Downhole motor and bearing assembly A downhole motor includes a bearing assembly for allowing rotational and bidirectional axial movement of a drive shaft in a housing. The bearing assembly includes a stationary race member, a displaceable race member, ball bearings disposed between the rac... | 12/24/1991 |
| 5048982 | Rotary structure This invention relates to a rotary structure adapted to be used as a spindle unit for a miniature motor or miniature rotor or as a tape guide roller for a VTR. In the structure of the rotary mechanism, instead of a conventional expensive radial ball beari... | 09/17/1991 |
| 4997292 | Vertical bearing assembly A bearing assembly is designed for high-speed heavy-duty vertical shafts and has a casing (1), antifriction bearings (3) with outer (5) and inner (4) races, and a load redistribution system (A). The load redistribution system (A) has elastic members (7) p... | 03/05/1991 |
| 4934843 | Rotary structure This invention relates to a rotary structure adapted to be used for a spindle unit of a miniature motor or miniature rotor or for a tape guide roller of a VTR or the like. In the structure of the rotary mechanism, instead of the conventional expensive rad... | 06/19/1990 |
| 4892423 | Rotary actuator and fabrication process therefor An axial force exerting in the axial direction of a rotary actuator is uniformly applied to a plurality of axially arranged ball bearings of a bearing set to hold inner and outer rings of each ball bearing in optimum position, thereby heightening the rigi... | 01/09/1990 |
| 4789254 | Large antifriction bearing In a large antifriction bearing consisting of two bearing races and at least two track systems disposed therebetween each having a rolling element row which rolls on associated tracks of the bearing races, one rolling element row (4, 11) is of a different... | 12/06/1988 |
| 4778287 | Annular multi-row bearing with shaped-wire races The invention concerns an annular multi-row bearing with shaped-wire races with an inner and an outer race, each of which constitutes part of the tracks for the rolling components, and with rolling components accommodated between them. The particular obje... | 10/18/1988 |
| 4750879 | Bearing arrangement A bearing which is to be acted upon by an axial load applied at a point radially displaced outside the bearing and which provides even load distribution. A number of bearing supports are distributed around the circumference of the bearing and are so arran... | 06/14/1988 |
| 4729675 | Downhole motor and bearing assembly A downhole motor and bearing assembly has a tubular housing with an inlet and outlet for flow of drilling fluid. A stator is supported in the housing and a rotor is supported for rotary movement in the stator. An open tubular shaft is connected to the rot... | 03/08/1988 |
