Patents Represented by Law Firm Shenier & O'Connorr
  • Enlarged earcup with adjustable earseal and improved noise attenuation
    Patent number: 6154890
    Abstract: An enlarged earcup which occupies substantially all of the helmet eardome and provides greater attenuation of ambient noise, especially low frequencies. The speaker and earseal are mounted onto an adjustable assembly. The assembly is slideably mounted onto a flange which extends inwardly from the earcup's rim. The assembly includes a pair of parallel annular plates which sandwich the flange therebetween.
    Type: Grant
    Filed: June 4, 1999
    Date of Patent: December 5, 2000
    Assignee: Gentex Corporation
    Inventors: John R. Deopuria, Charles A. Westgate