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Inertial angular velocity sensing instrument

  • US 3,113,463 A
  • Filed: 06/08/1960
  • Issued: 12/10/1963
  • Est. Priority Date: 06/08/1960
  • Status: Expired due to Term
First Claim
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15. AN INERTIAL ANGULAR VELOCITY SENSING DEVICE INCLUDING, A BASE, A HUB RIGIDLY MOUNTED ON THE BASE, A PAIR OF ANNULAR MEMBERS RESILIENTLY SUPPORTED ON THE HUB AXIALLY SPACED FROM ONE ANOTHER AND POSITIONED COAXIAL WITH THE CENTRAL AXIS OF THE HUB FOR VIBRATORY ANGULAR MOTION ABOUT THE CENTRAL AXIS, SAID ANNULAR MEMBERS BEING SUPPORTED ON THE HUB BY A PLURALITY OF RESILIENT SPOKES EXTENDING RADIALLY OUTWARD FROM THE HUB AND AFFIXED TO THE HUB AND TO RESPECTIVE ONES OF THE ANNULAR MEMBERS, ELECTRO-MAGNETIC MEANS COUPLED TO SAID ANNULAR MEMBERS FOR IMPARTING OUT-OF-PHASE VIBRATORY ANGULAR MOTION TO SAID MEMBERS ABOUT SAID AXIS, FIRST CONTROL MEANS INCLUDING FIRST PICK-UP MEANS COUPLED TO SAID ANNULAR MEMBERS AT A SELECTED ANGULAR POSITION WITH RESPECT THERETO FOR PROVIDING A SIGNAL INDICATIVE OF ANY TENDENCY FOR RELATIVE ROTATIONAL MOTION OF SAID MEMBERS ABOUT A SECOND AXIS EXTENDING RADIALLY FROM THE HUB PERPENDICULAR TO SAID CENTRAL AXIS AND ANGULARLY SPACED FROM THE SELECTED POSITION OF THE FIRST PICK-UP MEANS BY 90*, FIRST ELECTROMAGNETIC TRANSDUCER MEANS POSITIONED ADJACENT SAID ANNULAR MEMBERS DIAMETRICALLY OPPOSITE THE FIRST PICK-UP MEANS AND COUPLED TO SAID ANNULAR MEMBERS FOR UTILIZING THE SIGNAL FROM SAID FIRST CONTROL MEANS TO RESTRAIN SUCH RELATIVE ROTATIONAL MOTION OF SAID MEMBERS ABOUT SAID SECOND AXIS, FIRST METER MEANS FOR UTILIZING THE CURRENT FLOW IN SAID FIRST ELECTRO-MAGNETIC TRANSDUCER MEANS TO OBTAIN AN INDICATION OF THE RATE OF TURN OF SAID MEMBERS ABOUT A THIRD AXIS PERPENDICULAR TO SAID CENTRAL AXIS AND ANGULARLY DISPLACED FROM SAID SECOND AXIS, SECOND CONTROL MEANS INCLUDING SECOND PICK-UP MEANS POSITIONED ADJACENT SAID ANNULAR MEMBERS AT A POSITION CORRESPONDING TO THE ANGULAR POSITION OF SAID SECOND AXIS AND COUPLED TO THE ANNULAR MEMBERS FOR PROVIDING A SIGNAL INDICATIVE OF ANY TENDENCY FOR RELATIVE ROTATIONAL MOTION OF SAID MEMBERS ABOUT SAID THIRD AXIS, SECOND ELECTRO-MAGNETIC TRANSDUCER MEANS POSITIONED DIAMETRICALLY OPPOSITE SAID SECOND PICK-UP MEANS AND COUPLED TO SAID ANNULAR MEMBERS FOR UTILIZING THE SIGNAL FROM SAID SECOND CONTROL MEANS TO RESTRAIN SUCH RELATIVE ROTATIONAL MOTION OF SAID MEMBERS ABOUT SAID THIRD AXIS, AND SECOND METER MEANS FOR UTILIZING THE CURRENT FLOW IN SAID SECOND ELECTRO-MAGNETIC TRANSDUCER MEANS TO OBTAIN AN INDICATION OF THE RATE OF TURN OF SAID MEMBERS ABOUT SAID SECOND AXIS.

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