Patents Assigned to Alumapro, Inc.
  • Quick release spider clamp for loudspeakers
    Patent number: 6633649
    Abstract: A loudspeaker has voice coil suspended in the gap of a frame and motor by a spider and cone. The spider is attached to the frame by a clamp. The frame has a pair of contact pads formed therein. First and second retainers on the frame and clamp are releasably engageable through a combined axial and rotational movement. The clamp when engaged holds the periphery of the spider against the frame and the leads of the voice coil against the contacts pads. Cam surfaces on the retainers create axial pressure to hold the spider against the frame.
    Type: Grant
    Filed: January 19, 2000
    Date of Patent: October 14, 2003
    Assignee: Alumapro, Inc.
    Inventors: Matthew L. Honnert, Anthony J. Valene, John E. Burgess