Importance

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Abstract

A chuck including a body having a nose section with an axial bore formed therein, a plurality of jaws in communication with the axial bore, a sleeve rotatably mounted about the body in operative communication with the jaws, the sleeve defining an annular groove adjacent its rear perimeter, a rear cover defining an annular ridge that is received in the annular groove of the sleeve, and a bearing having a first race, a second race and at least one bearing element, wherein one of the first race and the second race defines a ratchet, wherein the other of the first race and the second race defines a pawl, the ratchet and the pawl are configured so that when the pawl engages the ratchet, the ratchet and pawl prevent the second race from rotating in the opening direction with respect to the first race.

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First Claim