US PATENT SUBCLASS 123 / 153
.~.~ Make and break

Current as of: June, 1999
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123 /   HD   INTERNAL-COMBUSTION ENGINES

143 R  DF  IGNITERS {6}
146.5 R  DF  .~ Sparkers {11}
153.~.~ Make and break {11}
154  DF  .~.~.~> Electromagnetic
155  DF  .~.~.~> Pneumatic
162  DF  .~.~.~> Piston-operated
156  DF  .~.~.~> Reciprocating electrode
157  DF  .~.~.~> Rocking-electrode hammer action
158  DF  .~.~.~> Rocking and rigid electrodes
159  DF  .~.~.~> Rocking and yielding electrodes
160  DF  .~.~.~> Oscillating electrodes
161  DF  .~.~.~> Rotary electrodes
163  DF  .~.~.~> Stationary-electrode structure
164  DF  .~.~.~> Adjusting mechanism

DEFINITION

Classification: 123/153

Sparking devices comprising relatively fixed and movable electrodes normally out of contact with each other and mechanically-operated means adapted to move the movable electrode into contact with the fixed electrode shortly before and to separate the electrodes when the combustible charge is to be ignited, whereby an electric circuit in which

the electrodes are included is alternately made and broken and a spark produced, and subordinate and auxiliary devices designed and especially adapted for use with sparking devices of the type above set forth and incapable of use in the manner contemplated in other relations, the device in question in either case not coming within the definition of some one of the following make-and-break subclasses. The make-and-break subclasses include sparking devices in which the time during which the electrodes are in contact with each other is much greater than the time during which they are separated, the normal condition of electrodes which must be brought into contact and then separated to produce a spark being considered as out of contact with each other.