(under subclass 118) Subject matter having a groove or analogous surface structure or having a narrow space which is disclosed as drawing or holding fluid by capillary action.
(1) Note. The fluid, for example, may be condensed oil mist which is drawn away from the electrode points by capillary action.
(2) Note. The narrow space may be formed, for example, between two facing flat electrodes of extended area positioned closely together.
SEE OR SEARCH THIS CLASS, SUBCLASS:
141+, and the subclasses specified in the notes thereto, for spark plug ignition electrode structure, not having capillary grooves, in which condensed fluid is drawn away from electrode points by gravity action due to the inclination of a surface of the electrode.
