US PATENT SUBCLASS 411 / 227
.~.~.~.~ Comprising one or more discrete members serving as a pawl and ratchet

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

190  DF  HAVING STRUCTURE TO RESTRICT ROTATION OF THREADED, MATING PIECES (E.G., NUT LOCK) {13}
204  DF  .~ Structure is coaxial, distinct member (e.g., washer, key, or nut portion) that restricts nut piece {7}
222  DF  .~.~ Internally threaded locking member (e.g., jam nut) {1}
223  DF  .~.~.~ Including means associated with at least one of the nuts for restricting rotation therebetween {11}
227.~.~.~.~ Comprising one or more discrete members serving as a pawl and ratchet {1}
228  DF  .~.~.~.~.~> Inherently resilient pawl

DEFINITION

Classification: 411/227

Comprising one or more discrete members serving as a pawl and ratchet:

(under subclass 223) 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.

(1) Note. A pawl carried by, for example, a washer constitutes subject matter for this subclass.