.~ With current connection and/or disconnection means (e.g., switch) {2}
508
.~.~ Plural means intermittently or selectively operated
DEFINITION
Classification: 219/508
(under subclass 507) Subject matter comprising two or more circuit connecting and disconnecting means. The claimed means may consist of a single main switch relay, for example, which in turn is controlled by the condition of a plurality of secondary means which operate in sequence periodically or selectively.
SEE OR SEARCH THIS CLASS, SUBCLASS:
398, for ovens with plural heating units which are selectively energizable.
446, for planar type surface heaters with plural selectively controlled heater units.
480, for plural separate heating devices which may be selectively activated.
486+, for selectively controlled system of plural resistance elements in general.
SEE OR SEARCH CLASS 307, Electrical Transmission or Interconnection Systems,
115, for switching systems utilizing plural selectively
