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    21.
    发明专利
    未知

    公开(公告)号：CH607335A5

    公开(公告)日：1978-12-15

    申请号：CH896976

    申请日：1976-07-13

    Applicant: CTS CORP

    Inventor： OZBIRN WILLIE P ,  ENGLISH JACK A ,  HUFFORD JAMES N

    IPC: H03H9/19 ,  H01L41/053 ,  H01L41/04

    Abstract: A piezoelectric crystal comprising an elongated bar-shaped crystal having a pair of parallel spaced lead wires depending orthogonally from nodal points on one surface of the crystal and an elongated bar-shaped base in spaced relationship to the crystal and supporting the lead wires. The base is provided with conical shape holes with the larger diameter ends thereof proximal to the crystal, and sealing and securing means locate the hermetical seal between the lead wires and the base distal from the crystal enabling the lead wires to vibrate freely within the conical holes of the base. The length of the lead wires between the crystal and the point of attachment to the base is one-quarter wave length to return to the crystal a maximum percentage of the vibrational energy transmitted into the lead wires from the crystal thereby minimizing energy dissipation of the crystal while maintaining both a minimum distance between the crystal and the base and providing a minimum package size for the crystal. A cover cooperates with portions of the base to enclose the crystal.

    SUPPORT STRUCTURE AND HOUSING FOR PIEZOELECTRIC CRYSTAL UNITS
    22.
    发明专利
    SUPPORT STRUCTURE AND HOUSING FOR PIEZOELECTRIC CRYSTAL UNITS 未知

    公开(公告)号：CA1029847A

    公开(公告)日：1978-04-18

    申请号：CA218138

    申请日：1975-01-14

    Applicant: CTS CORP

    Inventor： ENGLISH JACK A

    IPC: H01L41/053

    Abstract: An improved piezoelectric crystal unit provides a housing, a piezoelectric crystal element, and oppositely disposed mounting means for suspending the crystal element within the housing. A first set of three cradle means and a second set of three cradle means engage opposite faces of the crystal element. Each of the first set of cradle means contains a face member disposed adjacent the first face of the crystal element and an edge member disposed adjacent the peripheral edge of the crystal element and each of the second set of three cradle means contains a face member disposed adjacent the second face of the crystal element and an edge member disposed adjacent the peripheral edge of the crystal element. Integral with each of the first set of cradle means are elongated resilient legs exerting uniform pressures on one face of the crystal element and integral with each of the second set of cradle means are elongated resilient legs exerting uniform counterbalancing pressures on the other face of crystal element. The housing provides a nest and contains a rim having a pair of notches and an end wall having an embossed center portion. A cover having an end wall with an embossed center portion interfits with the housing to enclose the nest. A first circular center section engages the embossed center portion of the housing and a first terminal means integral with the circular center section extends through a first one of the notches to align the first set of three cradle means within the nest. A second circular center section engages the embossed center portion of the cover and a second terminal means integral with the second circular center section extends through a second one of the notches to align the second set of three cradle means within the nest.

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