Patents by Inventor Max Bloom

Max Bloom 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).

  • Stethoscope construction
    Patent number: 4458778
    Abstract: A microphone for stethoscopes and the like having a weighted head member with a recessed cavity formed therein. A diaphragm is sealed to the head member with an adhesive material to provide an airtight cover for the cavity. The mass of the head member causes it to remain substantially vibration free and as a result all vibrations are transmitted directly to the diaphragm causing it to vibrate with increased amplitude at all frequencies. The adhesive seal between the diaphragm and the head member effectively eliminates secondary vibration thereof so that the microphone is capable of producing a distortion free air signal of high amplitude at all normal frequencies.
    Type: Grant
    Filed: March 23, 1981
    Date of Patent: July 10, 1984
    Inventor: Max Bloom
  • Stethoscope head
    Patent number: D269295
    Type: Grant
    Filed: March 2, 1981
    Date of Patent: June 7, 1983
    Inventor: Max Bloom