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    • 8. 发明授权
    • Retainerless precessing roller bearing
    • 无保持滚子轴承
    • US06394656B1
    • 2002-05-28
    • US09654628
    • 2000-09-05
    • Steven S. Williams
    • Steven S. Williams
    • F16C1900
    • F16C23/086F16C19/38F16C19/383F16C33/36F16C2240/84
    • A retainerless angular contact antifriction bearing apparatus including an inner race member having a spheroidal inner race surface, an outer race member including a pair of convex outer race surfaces opposing the inner race surface, and a plurality of rollers arranged in axially oppositely inclined rows. Each roller includes a concave longitudinal profile having a radius of curvature greater than the radius of curvature of each of the spheroidal inner race surface and the associated convex outer race surface. The radial internal clearance between the roller and the race surfaces is no more than 0.002 inches.
    • 一种无定位角接触减摩轴承装置,包括具有球形内圈表面的内座圈构件,包括与所述内圈面相对的一对凸形外圈面的外圈构件以及沿轴向相对倾斜的排布置的多个辊。 每个辊包括具有大于球形内圈表面和相关联的凸形外圈表面中的每一个的曲率半径的曲率半径的凹形纵向轮廓。 滚子和滚道表面之间的径向内部间隙不大于0.002英寸。
    • 10. 发明授权
    • Systems and methods of tiered caching
    • 分层缓存的系统和方法
    • US08327076B2
    • 2012-12-04
    • US12465412
    • 2009-05-13
    • Robert D. MurphyRobert W. DixonSteven S. Williams
    • Robert D. MurphyRobert W. DixonSteven S. Williams
    • G06F12/12G06F12/08
    • G06F12/0866G06F12/0897G06F2212/217G06F2212/222G06F2212/313
    • The disclosure is related to data storage systems having multiple cache and to management of cache activity in data storage systems having multiple cache. In a particular embodiment, a data storage device includes a volatile memory having a first read cache and a first write cache, a non-volatile memory having a second read cache and a second write cache and a controller coupled to the volatile memory and the non-volatile memory. The memory can be configured to selectively transfer read data from the first read cache to the second read cache based on a least recently used indicator of the read data and selectively transfer write data from the first write cache to the second write cache based on a least recently written indicator of the write data.
    • 本公开涉及具有多个高速缓存的数据存储系统和具有多个高速缓存的数据存储系统中的缓存活动的管理。 在特定实施例中,数据存储设备包括具有第一读取高速缓存和第一写入高速缓存的易失性存储器,具有第二读取高速缓存和第二写入高速缓存的非易失性存储器以及耦合到易失性存储器和非易失性存储器的控制器 非易失存储器 存储器可以被配置为基于最近最近使用的读取数据的指示符选择性地将读取数据从第一读取高速缓存传送到第二读取高速缓存,并且基于至少一个选择性地将写入数据从第一写入高速缓存传送到第二写入高速缓存 最近写入的数据写入指标。