(under the class definition) Subject matter wherein bearing surface has been specially treated to improve its antifriction or wear-resisting properties.
(1) Note. This subclass includes all special processes for treating bearing surfaces not otherwise provided for in the art.
SEE OR SEARCH CLASS
29, Metal Working,
89.5, for burning-in, wearing-in and oil burnishing and subclasses 898+ for methods of making bearing.
148, Metal Treatment, appropriate subclasses for processes of significant heat treatment of metal to modify or maintain the internal physical structure (i.e., microstructure, etc.) or chemical property of metal, and appropriate subclasses for processes of reactive coating of metal substrates wherein an external agent combines with the metal substrate to form a coating thereon containing an element from said substrate.
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,
80+, for electrolytic coating processes. 216, Etching a Substrate: Processes, for treating a bearing surface including a chemical etching operation.
