US PATENT SUBCLASS 411 / 146
.~.~.~.~.~ And substructure accommodation for member portion

Current as of: June, 1999
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411 /   HD   EXPANDED, THREADED, DRIVEN, HEADED, TOOL-DEFORMED, OR LOCKED-THREADED FASTENER

81  DF  THREADED FASTENER LOCKED TO A DISCREET STRUCTURE (E.G., PLATE, RAIL, WHEEL) {13}
132  DF  .~ Lock washer-type member located between substructure and bolt head or nut {8}
143  DF  .~.~ Formations on either member or surface, and cooperative, restricting means on the other {1}
144  DF  .~.~.~ Formations on surface, means on member, one of which presents a sharp-edged configuration {1}
145  DF  .~.~.~.~ Formations comprise ramplike teeth, means comprises a movable pawl {1}
146.~.~.~.~.~ And substructure accommodation for member portion

DEFINITION

Classification: 411/146

And substructure accommodation for member portion:

(under subclass 145) Device wherein the member includes structure (e.g., a surface protuberance, an arm, etc.) for entering or otherwise engaging with a cavity, slot, etc., provided in the substructure for receiving it, and which cavity, etc., is located, at least in part, below the surface of the substructure.

(1) Note. In perhaps its most simplistic manifestation, this subclass adds, to the split washer example of (1) Note of subclass 145 above, a shoulder, inset into the substructure, for backing up the other free end of the washer.

(2) Note. As an alternative to forming the cavity, etc., in the substructure, a separate plate, attached to the substructure, may be utilized for providing such a feature; however, patents disclosing and claiming such an alternative structure usually meet the limitations of subclass 136 above and so will be found there.

(3) Note. It is occasionally disclosed in the art of this subclass that, if the substructure is of wood rather than metal, the requirement for a cavity, etc., in the substructure may be dispensed with and the protuberance, etc., merely be forced into the substructure.

SEE OR SEARCH THIS CLASS, SUBCLASS:

136, as explained in the reference thereto appearing in (2) Note above.