Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 8167501 | Separator for bearing assemblies with cyclic loads A bearing assembly includes first and second races, a plurality of ball bearings positioned between the first and second races, and a spacer positioned between each of the ball bearings. The spacers each include a body defining opposite first and second sides, a fir... | 05/01/2012 |
| 8021053 | Rotary wing aircraft ball bearing In a rotary wing aircraft tail rotor head assembly having a ball bearing on a spindle at the head of a rotor wing, the ball bearing contains slug ball separators between the balls in the bearing. The separator may be made from PEEK, PTFE, or polyimide. The ball-to-b... | 09/20/2011 |
| 7513692 | Method for multi orbital engagement of surfaces by free rolling bodies and multi orbital devices based on this method The present invention provides a new bearing device of free rolling parts. According to the basic embodiment the bearing device is comprised of: an inner race, an outer race, two rows of rolling parts wherein each rolling part is in not in a contact with two adjacen... | 04/07/2009 |
| 7159481 | Ball screw device and linear motion device In a ball screw device comprising a screw shaft and a nut which make relative movement to each other through a multiplicity of balls, as well as in a linear motion device comprising an outer member and an inner member which make the relative movements to each other ... | 01/09/2007 |
| 7146869 | Ball screw device and linear motion device A spacer between adjacent balls of, for example, a ball screw device or a linear motion device has an outer periphery that is concave such that the spacer is elastically deformed to be in substantially circular line contact with the adjacent balls and that a distanc... | 12/12/2006 |
| 7066654 | Counter-rotating antifriction bearing assembly Disclosed herein is a bearing assembly comprising: an outer race having an inner surface; an inner race having an outer surface, the inner surface of the outer race and the outer surface of the inner race defining a bearing assembly raceway; a plurality of main roll... | 06/27/2006 |
| 7008113 | Roller bearing in a deep-drilling apparatus A ball-bearing unit for a bearing of a deep-drilling apparatus having bearing races made from steel with balls disposed therebetween. Contaminated drilling medium passes into the space between the bearing races. Load-bearing balls made from ceramic alternate with se... | 03/07/2006 |
| 6971800 | Rollers for a zero clearance bearing A shaft and bearing assembly comprising a soft shaft having an outer contact surface having a hardness less than 30 HRC and a bearing assembly having a plurality of rollers. The bearing assembly is configured to be positioned about the shaft with the rollers in roll... | 12/06/2005 |
| 6923575 | Ball spacer and rolling device using it The present invention relates to a ball spacer and the rolling device using it. The ball spacer of the present invention makes the ball doesn't touch to his adjoining ball, so as to reduce the noise. Besides, the ball spacer comprises a cylinder surface touching to ... | 08/02/2005 |
| 6854351 | Linear motion device, rolling device and separator for rolling device A liner motion device has a liner motion element fitted on a shaft and moving straight along the shaft; a plurality of balls which are retained in a rolling element groove formed on the inner side of the liner motion element and roll over between the rolling element... | 02/15/2005 |
| 6821604 | Retaining piece structure In a retaining piece interposed between the adjacent rolling balls, a concave surface of each of both side surfaces of the retaining piece where it contacts with the spherical surfaces of the balls is configured to partly contact with the spherical surface of the ba... | 11/23/2004 |
| 6419397 | Housed steering column A housing encloses at least a portion of a steering shaft, and a preloaded ball bearing mounted within the housing supports the steering shaft. The preloaded ball bearing has loaded balls that are preloaded and unloaded balls that are free floating, an un... | 07/16/2002 |
| 6113274 | Linear guideway having spacers and spacer ball Spacers 10 of the same size are each disposed between adjacent ones of balls 6 which are loaded into each of endless circulation paths 8 formed in a carriage 3, and a spacer ball 12 having a diameter slightly smaller than a nominal diameter of each of the... | 09/05/2000 |
| 5904426 | Non-retainer type rolling bearing Each of the inner and outer rings of a non-retainer type rolling bearing has a wear-resistant solid film of a fluorine-containing synthetic resin formed on its track surface. The solid film carries a very small amount of grease having a low vapor pressure... | 05/18/1999 |
| 5685390 | Electrically-operated power steering apparatus An electrically-operated power steering apparatus comprises a steering shaft, a rack shaft capable of linear movement for turning a steering running wheel a, rack-pinion gear for coupling the steering shaft with the rack shaft, and a ball screw mechanism ... | 11/11/1997 |
| 5615955 | Linear guide apparatus with lubricant-containing polymer spacer balls In a self-lubrication linear guide apparatus including a guide rail, a slider and a plurality of rolling elements, the apparatus further includes a plurality of lubricant-containing polymer spacer balls which are interposed between the rolling elements in... | 04/01/1997 |
| 4500144 | Bearing member A bearing member (10) having a series of carbon separators (16, 16' . . . 16N) with semi-spherical pockets (52, 52' . . . 52N) on the end thereof and semi-spherical ribs (20) and (22) on its inner and outer periphery. The ribs (20) a... | 02/19/1985 |
| 4208077 | Continuous contact ball and roller bearing A bearing composed of concentric radially spaced circular inner and outer races confined in a common plane for relative rotation by sets of rolling members having rolling contact with the races and with each other, the parts being dimensioned to provide s... | 06/17/1980 |
| 4141607 | Extreme temperature rolling contact ball bearings Radial load ball bearings in which the elements are in rolling contact only, the load bearing balls being separated by smaller spacing balls which are held in position by a spring-disk. Spring-disk pressure holds the load bearing balls against both races ... | 02/27/1979 |
| 3989324 | Rolling contact bearings Basic mechanisms avoiding sliding friction and comprised of two races surrounding two series of rotating elements which are alternately interposed between each other in rolling contact; each series additionally being in rolling contact with one of the rac... | 11/02/1976 |
