Patents by Inventor Rolf Hatlapa

Rolf Hatlapa 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: 5197403
    Abstract: Sailing vessel and mast for sailing vessels wherein the mast is in the form of a profile body. In an arrangement with a profile mast to hold a reefing roller, the mast is braced with its mast foot between the deck and keel area of the vessel. The profile body is thereby configured as a rigid beam with spars in the forward area; while the rear area, a receptacle chamber, is formed by wall parts with elastic areas; and a slot opening for the emergence of the sail is bordered by terminal strips, which can be elastically pressed against one another.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: March 30, 1993
    Inventor: Rolf Hatlapa
  • Patent number: 4169580
    Abstract: An electrically powered hydraulic winch has a main support containing a transmission connected on one side to a winch drum and connected on its other side to the output shaft of a hydraulic motor contained in a drive housing releasably bolted to the side of the support. A motor housing is fixed to the bottom of the drive housing and forms a fluidtight compartment containing a drive unit formed of an electric motor and a hydraulic pump, which latter is connected via a control unit in the drive housing to the hydraulic motor. A reservoir in the drive housing above the compartment maintains this compartment completely full of hydraulic fluid that is also used in the drive circuit between the hydraulic pump and motor.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: October 2, 1979
    Assignee: Hatlapa Uetersener Maschinenfabrik GmbH
    Inventors: Rolf Hatlapa, Bernd Horn