(under subclass 121.1) Tool wherein the enclosing walls are slit along the length thereof.
(1) Note. A wrench is considered to be a "slotted socket" rather than an "open end" wrench (classifiable in subclass 119) if either of the following apply: (1) the walls of the wrench surround a nut of the like to the extent that the wrench cannot be withdrawn laterally, or (2) the walls of the wrench surround at least 180 degrees of the circumference of a nut of the like, and also a substantial portion of an end face.
SEE OR SEARCH CLASS
279, Chucks or Sockets,
42, 43 and 43.1+ for a tool or work-holding socket of similar structure.