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    METHOD AND APPARATUS FOR IMPROVED VIBRATION ISOLATION
    12.
    发明专利
    METHOD AND APPARATUS FOR IMPROVED VIBRATION ISOLATION 未知

    公开(公告)号：CA2422391C

    公开(公告)日：2007-02-13

    申请号：CA2422391

    申请日：2001-09-26

    Applicant: BELL HELICOPTER TEXTRON INC

    Inventor： SMITH MICHAEL R ,  PASCAL ROBERT J ,  STAMPS FRANK B

    IPC: F16F7/10

    Abstract: A tunable vibration isolator (451, 551, 651, 681, 691, 721, 801, 901, 973) with active tuning elements (473, 475, 573, 673, 675, 689, 705, 707, 745, 74 7, 747, 819a, 819b) having a housing which defines fluid chambers. A piston (45 5, 555, 655, 695, 725, 805, 970) is disposed within the housing. A vibration isolation fluid is disposed within the fluid chambers. A passage (463, 563, 663, 735, 881, 904) having a predetermined diameter extends through the pist on to permit the vibration isolation fluid to flow from one fluid chamber to th e other. The tunable vibration isolator may employ either a solid tuning mass approach or a liquid tuning mass approach. In either case, active tuning elements, or actuators, are disposed in the fluid chambers to selectively tu ne the vibration isolator.

    VARIABLE STIFFNESS SUPPORT
    13.
    发明专利
    VARIABLE STIFFNESS SUPPORT 未知

    公开(公告)号：CA2718642C

    公开(公告)日：2013-09-03

    申请号：CA2718642

    申请日：2003-05-21

    Applicant: BELL HELICOPTER TEXTRON INC

    Inventor： HAYNES DAVID F ,  WILLIAMS DAVID L ,  SMITH MICHAEL R ,  PASCAL ROBERT J

    IPC: F16M7/00 ,  B64C27/00 ,  F16F1/387 ,  F16F15/00 ,  F16M1/00 ,  F16M13/00

    Abstract: A floor mounting system including an array of variable stiffness supports disposed between and coupled to a base structure and a floor member, and a control system conductively coupled to each variable stiffness support for selectively varying the stiffness of each variable stiffness support is disclosed. Each variable stiffness support has a support housing that is configured to adjust the orientation of an internal elastomer assembly. The support housing includes an adjustment mechanism, and the elastomer assembly includes an outer ring that encircles an elastomeric material, a central bushing embedded in the elastomeric material, and a plurality of shims embedded in the elastomeric material in a parallel plane.

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