US PATENT SUBCLASS 335 / 87
.~ Periodic (e.g., vibrators)

Current as of: June, 1999
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335 /   HD   ELECTRICITY: MAGNETICALLY OPERATED SWITCHES, MAGNETS, AND ELECTROMAGNETS

2  DF  ELECTROMAGNETICALLY ACTUATED SWITCHES {30}
87.~ Periodic (e.g., vibrators) {6}
88  DF  .~.~> Plural periodic switches or with plural pairs of contacts {1}
90  DF  .~.~> With vibrating or oscillating element damping, frequency adjusting or vibration control
91  DF  .~.~> Actuating magnet structure or material {1}
93  DF  .~.~> Vibratory reed or other periodic contact actuator {1}
95  DF  .~.~> Armature {1}
97  DF  .~.~> Contact arrangement or composition {1}

DEFINITION

Classification: 335/87

(under subclass 2) Subject matter wherein the device comprises means whereby a circuit is completed and broken intermittently or cyclically at constantly recurring intervals under the influence of a magnetic flux field.

(1) Note. The switches found here and in the indented subclasses below are analogous to the converters (choppers) utilized in Class 363, subclasses 106+ and subclass 124 where the circuit interrupter forming a component of a Class 363 system is defined as a "periodic switch".

SEE OR SEARCH THIS CLASS, SUBCLASS:

107+, below, for multiple contact type switches having plural contacts which are selectively, cyclically, alternately or intermittently actuated.

151+, for hermetically sealed reed switches which may be cyclically actuated.

SEE OR SEARCH CLASS 200, Electricity: Circuit Makers and Breakers,

19.01+, for periodic circuit breakers generally.

307, Electrical Transmission or Interconnection Systems,

132, for repetitive make and break switching systems.

310, Electrical Generator or Motor Structure,

15+, for reciprocating or vibrating electric motors comprising a magnet, an armature and a contact arrangement causing vibration or periodic motion of the armature when the magnet circuit is closed.

315, Electric Lamp and Discharge Devices: Systems,

209+, for systems having a periodic switch in the supply circuit of a load or loads.

318, Electricity: Motive Power Systems,

37, for plural reciprocating or oscillating electric motor systems and subclasses 119+ for single reciprocating or oscillating motor systems, especially indented subclass 134 for motor systems with circuit making or breaking devices in the energizing circuit.

361, Electricity: Electrical Systems and Devices,

1+, for circuit interrupting systems, subclasses 139+ for periodic circuits for relays and electromagnets, and subclasses 245+ for automatic pole changers. 363, Electric Power Conversion Systems,

110, for an inverter system comprising a vibrator means.