Patents by Inventor Fedor Alexeevich Bondarenko

Fedor Alexeevich Bondarenko 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).

  • Blockage indicator for internal combustion engine air cleaner element
    Patent number: 4029041
    Abstract: The blockage indicator for an internal combustion engine air cleaner element has a cylindrical housing with ports provided in the cylindrical wall thereof. The housing accommodates an indicator drum which is carried on a stationary shaft mounted on the housing end wall. The cylindrical surface of the indicator drum has painted signalling areas. The indicator drum is fixed axially on the shaft and accommodates a spring adapted to turn the drum on the shaft.The indicator housing also accommodates a spring-loaded diaphragm which forms, in conjunction with the housing, a sealed-off chamber communicating with the cleaned-air chamber of the air cleaner involved. A locking device provides interaction between the diaphragm and the indicator drum whose bottom wall faces toward the diaphragm. This constructional arrangement reduces the overall dimensions of the indicator.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: June 14, 1977
    Inventors: Eduard Matveevich Genshpring, Zigmund Genrikhovich Bljumshtein, Veniamin Evnovich Maev, Fedor Alexeevich Bondarenko, Anatoly Lvovich Gutman, Vladimir Alexandrovich Presman