Patents by Inventor Donald Johansson

Donald Johansson 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: 4764136
    Abstract: The invention relates to a marine drive comprising a water-cooled internal combustion engine mounted in a boat, a shield mounted on the transom stern of the boat and supporting a universal joint housing and a pinion box connected to the universal joint housing and comprising a propeller arranged to be immersible in the water, an exhaust piping connected between the engine and the exhaust outlet carrying off exhaust and cooling water from the engine. The exhaust piping comprises a first part passing from the engine through the shield and associated with a second part passing through the pinion box and ending at the exhaust outlet, the connection between the first and the second part of the exhaust piping being open at least partly in order to unload the pressure in the pipe and to let out cooling water.
    Type: Grant
    Filed: February 4, 1987
    Date of Patent: August 16, 1988
    Inventor: Donald Johansson
  • Patent number: 4432737
    Abstract: The invention relates to a steering arrangement for boats equipped with inboard-outboard drive (10). The gearbox (22) of the drive is arranged so as not to be horizontally pivotal in relation to the stern (12) of the boat, while the underwater housing (26) of the drive is horizontally pivotal in relation to the gearbox (22). For rotating the underwater housing in relation to the gearbox, a steering gear (44-56) acts which comprises a toothed segment (56). Hereby a total steering angle of up to 180.degree. can be obtained.
    Type: Grant
    Filed: February 4, 1982
    Date of Patent: February 21, 1984
    Assignee: Broderna Lindqvists Verkstader AB
    Inventor: Donald Johansson