.~.~> Automatically moved (e.g., engine vibration)
DEFINITION
Classification: 313/125
(under subclass 118) Subject matter having an ignition spark electrode which is movable into two different positions.
(1) Note. For the purpose of this definition, an electrode which is variably positioned by plastic distortion thereof (as, for example, when points are "set" to a desired position by bending to provide a particular gap length) is not considered to be movable. Where the distortion is an elastic deformation as, for example, due to vibration, the art is in this and the indented subclass.
(2) Note. In general, this subclass includes spark plugs provided with means whereby an electrode may be moved other than by plastic distortion without disassembly of the spark plug. The electrode may be moved for cleaning or for obtaining a variable width ignition gap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
119, for this subject matter where the spark plug can be removed from normal operating position without stopping the
engine.
120, for spark plugs having a reversible electrode which can assume one position or a reversed position. 122, for spark plugs having a removable electrode on the shell.
127, for spark plugs having stationary electrodes and a movable cleaner.
143, for spark plugs having a movable baffle or gas directing means for the electrode chamber.
146+, for other space discharge devices having a movable electrode.
