Class Information
Number: 411/227
Name: Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener > Having structure to restrict rotation of threaded, mating pieces (e.g., nut lock) > Structure is coaxial, distinct member (e.g., washer, key, or nut portion) that restricts nut piece > Internally threaded locking member (e.g., jam nut) > Including means associated with at least one of the nuts for restricting rotation therebetween > Comprising one or more discrete members serving as a pawl and ratchet
Description: Device wherein the means comprises one or more distinct members of which (a) one is either a pawl (e.g., a biased arm, dog, finger, etc.) or a ratchet (e.g., a series of teeth of asymmetrical profile), in which event the counterpart ratchet or pawl, respectively, is an integral part of one of the internally threaded elements, or (b) one member is a pawl and another member is a ratchet and each is carried, at least in part, either by one of the elements or by yet another member cooperating with that element, and wherein, in either (a) or (b), the function of the pawl and ratchet is to restrict rotation to a greater degree in one direction than in the other.
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