Importance

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Abstract

A family of one-way sprag clutches is disclosed. Each clutch includes concentric inner and outer races, each defining a bearing diameter and a sprag diameter. In a first embodiment, outer race bearing and sprag diameters are equal, while in a second embodiment, inner race bearing and sprag diameters are equal. The clutches of the family include at least one race differing in bearing diameter by a pre-determined increment multiple. A bearing corresponding to the inner and outer race bearing diameters and a plurality of identical sprags are arranged between the races. Each sprag includes a pre-selected arc-length defined as a function of bearing diameter such that for each diameter multiple within the family a whole number of sprags are used to achieve positive continuous engagement.

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First Claim