Patents Assigned to Dynamic Instruments, Inc.
  • Patent number: 5641910
    Abstract: A vibrator or shaker comprises an audio speaker and a mounting for attaching a payload to be vibrated. One end of the mounting is adhesively bonded to the outside of the speaker cone. The other end of the mounting has a threaded spindle for attaching the payload. A suspension member or spider may be attached at its edges to the speaker frame and at its center to the mounting. The suspension member increases the maximum payload weight that can be accommodated by relieving the speaker cone of a portion of the combined weight of the payload, the mounting, and the moving speaker armature.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: June 24, 1997
    Assignee: Dynamic Instruments, Inc.
    Inventor: Bennie R. Middleton