Patents by Inventor Rik Roemen

Rik Roemen 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).

  • Arrangement for sealing a propeller shaft of a marine vessel and a method of controlling the operation thereof
    Patent number: 10065724
    Abstract: An arrangement for sealing a propeller shaft of a marine vessel are specifically applicable in preventing oil leakage via propeller shaft sealing in cases where the draught of a marine vessel is, for some reason, reduced beyond its ordinary value.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: September 4, 2018
    Assignee: WARTSILA FINLAND OY
    Inventors: Arnoud De Kruijf, Rik Roemen, Minoru Takayasu, Bart Van Der Ven, Joost Van Eijnatten, Masahiko Yotsuyanagi
  • Hydraulic steering arrangement for a thruster of a marine vessel
    Patent number: 9969479
    Abstract: A novel design of a hydraulic steering arrangement for a thruster of a marine vessel is specifically designed for thrusters intended to operate in an arctic environment where ice is present. To meet the arctic demands the steering arrangement is provided with a cross-over safety block arranged close to the hydraulic steering motor for absorbing the torque subjected to the thruster by ice for instance.
    Type: Grant
    Filed: September 9, 2011
    Date of Patent: May 15, 2018
    Assignee: WARTSILA FINLAND OY
    Inventors: Jan Kees De Bruin, Rik Roemen, Bart Van Der Ven
  • Method of arranging the lubrication of a steerable thruster of a marine vessel and a lubrication arrangement therefor
    Patent number: 9630693
    Abstract: The lubrication of a steerable thruster of a marine vessel is based on splash-type lubrication at the pod and full bath lubrication in the stembox and in the shank. The lubrication oil enters the pod both from the stembox and the shank via a constriction and directly from the oil tank. The oil is further circulated from the pod to the oil tank by means of pumps.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: April 25, 2017
    Assignee: WARTSILA FINLAND OY
    Inventors: Arnoud De Kruijf, Rik Roemen, Aad Van Der Kam, Bart Van Der Ven
  • ARRANGEMENT FOR SEALING A PROPELLER SHAFT OF A MARINE VESSEL AND A METHOD OF CONTROLLING THE OPERATION THEREOF
    Publication number: 20150076768
    Abstract: An arrangement for sealing a propeller shaft of a marine vessel are specifically applicable in preventing oil leakage via propeller shaft sealing in cases where the draught of a marine vessel is, for some reason, reduced beyond its ordinary value.
    Type: Application
    Filed: April 17, 2012
    Publication date: March 19, 2015
    Applicant: WARTSILA FINLAND OY
    Inventors: Arnoud De Kruijf, Rik Roemen, Minoru Takayasu, Bart Van Der Ven, Joost Van Eijnatten, Masahiko Yotsuyanagi
  • METHOD OF ARRANGING THE LUBRICATION OF A STEERABLE THRUSTER OF A MARINE VESSEL AND A LUBRICATION ARRANGEMENT THEREFOR
    Publication number: 20140318898
    Abstract: The lubrication of a steerable thruster of a marine vessel is based on splash-type lubrication at the pod and full bath lubrication in the stembox and in the shank. The lubrication oil enters the pod both from the stembox and the shank via a constriction and directly from the oil tank. The oil is further circulated from the pod to the oil tank by means of pumps.
    Type: Application
    Filed: November 18, 2011
    Publication date: October 30, 2014
    Applicant: WARTSILA FINLAND OY
    Inventors: Arnoud De Kruijf, Rik Roemen, Aad Van Der Kam, Bart Van Der Ven
  • HYDRAULIC STEERING ARRANGEMENT FOR A THRUSTER OF A MARINE VESSEL
    Publication number: 20140299030
    Abstract: A novel design of a hydraulic steering arrangement for a thruster of a marine vessel is specifically designed for thrusters intended to operate in an arctic environment where ice is present. To meet the arctic demands the steering arrangement is provided with a cross-over safety block arranged close to the hydraulic steering motor for absorbing the torque subjected to the thruster by ice for instance.
    Type: Application
    Filed: September 9, 2011
    Publication date: October 9, 2014
    Applicant: WARTSILA FINLAND OY
    Inventors: Jan Kees De Bruin, Rik Roemen, Bart Van Der Ven