Patents by Inventor Donald Michaelson

Donald Michaelson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5893541
    Abstract: A spring loaded or mechanically activated detent for a microphone stand that allows for quick disassembly and re-assembly. The microphone main shaft (102) is terminated at the lower end with a circumferential raceway or slot (44). The base has a coaxial matching cavity that accepts the lower end of the microphone shaft. At a depth to match the raceway, a spring loaded ram, positioned radially, extends into and mates with the raceway to secure the shaft to the base. In another preferred embodiment a spring clip or a stiff clip can be mechanically inserted through a radially extended opening in the base to engage the slot in the lower end of the shaft. There may be other such rams distributed around the circumference of the shaft. In another preferred embodiment the raceway may extend only partially around the circumference of the shaft. The raceway will be of a uniform depth for some arc length ending with a lip and a ramp up to the surface.
    Type: Grant
    Filed: August 27, 1996
    Date of Patent: April 13, 1999
    Inventor: Donald Michaelson