(under subclass 151) Rail joints which include means associated therewith for confining or receiving a liquid, a liquid bearing substance, or any film forming material which serves as a lubricant.
SEE OR SEARCH THIS CLASS, SUBCLASS:
163, for rail joints that contain solid material which was positioned within the joint while in a molten or plastic state.
SEE OR SEARCH CLASS
184, Lubrication,
3.1+, for apparatus for applying lubricant to a rail, subclass 5, for slide bearings having lubricating means incorporated therein, and subclass 100 for slide bearing lubricators.
384, Bearings, 13, for a linear bearing having lubricating means incorporated therein.
439, Electrical Connectors,
41+, for an electrical connector with vacuum applying means; subclasses 190+ for an electrical connector having a retainer or passageway for fluent material; and subclasses 519+ for an electrical connector with provision to restrict environmental effects thereon.
