Patents by Inventor John Bakker

John Bakker 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).

  • Publication number: 20070045173
    Abstract: A candle filter assembly for a filter device includes, in an exemplary embodiment, a tubular core having an outer surface and an inner surface, and including a plurality of openings extending therethrough, a filter media supported by the core defining a core and filter media subassembly, and a drain pipe including a plurality of openings extending therethrough to permit fluid to flow between an outer surface of the drain pipe and the inside of the drain pipe. The drain pipe is located inside the core. The candle filter assembly also includes an end cap, a first sealing block including a drain pipe opening. The drain pipe extends through the drain pipe opening in the first sealing block. The candle filter assembly further includes a compression nut threadingly engaging the drain pipe extending through the first sealing block.
    Type: Application
    Filed: August 30, 2005
    Publication date: March 1, 2007
    Inventors: William Zimmerman, John Bakker
  • Patent number: 4745856
    Abstract: A trash compactor which is hydraulically actuated and which has a compactor blade which can be moved the full length of a truck body with a telescoping cylinder with one actuation of the cylinder and wherein one end of the cylinder is connected by a bracket to the rear end of the body of the truck and the other end of the cylinder extends into a nose portion of the compactor blade where it is attached with a bracket. A relatively low pressure hydraulic system actuates the compactor blade and a release valve limits the maximum pressure to which the system is subjected.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: May 24, 1988
    Inventors: David P. Bakker, David W. Van Sickle, John Bakker