Synchronizing arrangement for airplane engines and the like

• US 3,206,641 A
• Filed: 01/22/1962
• Issued: 09/14/1965
• Est. Priority Date: 01/22/1962
• Status: Expired due to Term

• Current Assignee: James L. Leeson Jr, James R. Voss
• Original Assignee: James L. Leeson Jr, James R. Voss
• Inventors: Leeson, James L. Jr., Voss, James R.
• Application Number:
  US04/167,622
• Time in Patent Office: 1,331 Days
• US Class Current: 361/244
• CPC Class Codes: B64C 11/50 Phase synchronisation between multiple propellers
• CPC Class Codes: B64D 35/00 Transmitting power from power plants to propellers or rotors; Arrangements of transmissions
• CPC Class Codes: H02P 5/56 Speed and position comparison between the motors by electrical means
• CPC Class Codes: Y10S 292/23 Vehicle door latches

Claims

1. IN APPATUS FOR CONTROLLING AN ENGINE TO SYNCHRONIZE ITS ACTUAL SPEED WITH A DESIRED SPEED, THE COMBINATION COMPRISING FIRST MEANS FOR GENERATING MASTER RECURRING SIGNALS AT A REPETITION RATE SUBSTANTIALLY PROPORTIONAL TO THE DESIRED SPEED, SECOND MEANS FOR GENERATING SLAVE RECURRING SIGNALS AT A REPETITION RATE SUBSTANTIALLY PROPORTIONAL TO THE ACTUAL SPEED OF SAID ENGINE, THIRD MEANS CONNECTED TO RECEIVE AND RESPONSIVE TO SAID MASTER AND SLAVE SIGNALS FOR PRODUCING A CORRECTION SIGNAL EACH TIME THAT THE PHASE OF THE MASTER SIGNAL LAPS THE SLAVE SIGNAL BY 360* IN PHASE, MEANS RESPONSIVE TO THE CORRECTION SIGNALS FOR CHANGING THE ACTUAL SPEED OF SAID ENGINE TO BRING IN INTO AGREEMENT WITH SAID DESIRED SPEED, A VARIABLE TIME DELAY DEVICE INTERPOSED BETWEEN ONE OF SAID GENERATING MEANS AND SAID THIRD MEANS, AND MEANS FOR VARYING THE DELAY INTERVAL OF SAID DEVICE ACCORDING TO THE PHASE ANGLE BETWEEN SAID MASTER AND SLAVE RECURRING SIGNALS.