US PATENT SUBCLASS 370 / 304
.~.~ Synchronizer


Current as of: June, 1999
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370 /   HD   MULTIPLEX COMMUNICATIONS

298  DF  LOW SPEED ASYNCHRONOUS DATA SYSTEM (E.G., TELETYPEWRITER SERVICE) {5}
303  DF  .~ Rotary distributor {1}
304.~.~ Synchronizer {1}
305  DF  .~.~.~> Start-Stop {1}


DEFINITION

Classification: 370/304

Synchronizer:

(under subclass 303) Subject matter having rotary distributors with means for controlling the relationship in phase, frequency, or speed between them.

SEE OR SEARCH THIS CLASS, SUBCLASS:

503+, for a generic multiplex synchronizing device.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

395, for a system for synchronizing the rotary motion of a plurality of shafts where adjustable gearing is utilized to control the rotation of at least one of the shafts.

307, Electrical Transmission or Interconnection Systems,

82, 83, and 87 for an electrical system having a plurality of supply circuits or sources of supply with means for controlling the connection or disconnection of the supply circuits or sources by means responsive to the frequency and/or phase relationship between the circuits or sources (the control may involve the control of the speed or angular relation of a generator or converter with respect to another; see subclass 82 where plural rotary converters are involved and subclass 84 where plural generators are involved); and subclass 123 for miscellaneous electrical switching systems where the switching operation is controlled by the differential speed between two bodies.

318, Electricity: Motive Power Systems,

41+, for plural electric motor systems having electrical synchronizing interconnection for maintaining synchronization between the motors; subclasses 68+ for plural electric motor systems with means for controlling the running speed of one motor relative to the speed of another motor including such systems for maintaining the motors in synchronism; and subclass 85 for the miscellaneous plural electric motor systems with synchronizing or phasing control for the motors.

340, Communications: Electrical,

870.11+, for a telemetering system having a rotary distributor; subclass 681 for electric alarm which indicate the synchronism or lack of synchronism of a plurality of shafts; and subclass 318 for a miscellaneous signaling system having synchronized distributors at the transmitter and receiver.

341, Coded Data Generation or Conversion,

192, for a code transmitter with a rotary distributor.

352, Optics: Motion Pictures,

1+, for motion picture apparatus for recording or reproducing a motion picture with sound accompaniment.

368, Horology: Time Measuring Systems or Devices,

46+, for clock systems which include a master clock and a secondary or receiving clock where the clocks are electrically controlled or operated; subclasses 52+ for the master clock of such a system with its electrical circuits and connections; and subclasses 59+ for the secondary or receiving clock of such a system with their immediate operating mechanism.

375, Pulse or Digital Communications, 354+, for a nonmultiplexed synchronizer.

416, Fluid Reaction Surfaces (i.e., Impellers),

34, for plural impellers having synchronizing means.