Patents by Inventor Stig Lonngren

Stig Lonngren 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: 20110223818
    Abstract: An improved bearing assembly includes one unique shaft washer (158) rather than using separate forward and aft shaft washers as in the prior art; a slight lengthening of the forward roller (174) as compared to the aft roller (176); an increase in the diameter of the forward roller relative to the aft roller; an increase in the number of rollers; improved materials, particularly in the shaft washer (158) where fewer inclusions are present in the metal; and an osculation configured to provide less space and unconstrained movement between the rollers and runways. The improvements result in decreased movement or play between the shaft washers, the bearings/rollers, and the outer rings. The improvements and changes provide a compact design that fits within existing pod propulsion systems.
    Type: Application
    Filed: August 27, 2009
    Publication date: September 15, 2011
    Applicant: ROLLSROYCE AB
    Inventors: Stig Lönngren, Thore Lund, Torbjörn Holmqvist, Pär Malmberg, Lennart Gentzel
  • Patent number: 6935907
    Abstract: A pod unit including a pod housing (1) and an assembly unit (6), a so called seating, for the pod housing (1), wherein the seating (6) has a lower portion (6A) and an upper portion (6F) as well as a base (15) for the installation of the pod housing (1) which comprises a lower casing portion (1A) for the accommodation of a propulsion unit (2, 3, 4), an intermediate portion (1B) comprising air ducts (9, 10), and an upper portion (13), which is fixedly connected to a steering engine (14, 18, 19), with a gear ring (14) to be fixed at the base (15). A cooling system having at least one fan (7) is mounted within the seating.
    Type: Grant
    Filed: March 17, 2004
    Date of Patent: August 30, 2005
    Assignee: Rolls-Royce Aktiebolag
    Inventor: Stig Lönngren
  • Publication number: 20040175998
    Abstract: The invention relates to a pod unit comprising a pod housing (1) and an assembly unit (6), a so called seating, for the pod housing (1), wherein the seating (6) comprises a lower portion (6A) and an upper portion (6F) as well as a base (15) for the installation of said pod housing (1) which comprises a lower casing portion (1A) for the accommodation of a propulsion unit (2, 3, 4), an intermediate portion (1B) comprising air ducts (9, 10), and an upper portion (13), which is fixedly connected to a steering engine (14, 18, 19), with a gear ring (14) to be fixed at said base (15). The invention is characterized therein that a cooling system comprising at least a fan (7) is mounted within the seating (6).
    Type: Application
    Filed: March 17, 2004
    Publication date: September 9, 2004
    Inventor: Stig Lonngren
  • Patent number: 6783409
    Abstract: A pod unit including a pod housing (1) and an assembly unit (6), a so called seating, for the pod housing (1), wherein the seating (6) has a lower portion (6A) and an upper portion (6F) as well as a base (15) for the installation of the pod housing (1) which comprises a lower casing portion (1A) for the accommodation of a propulsion unit (2, 3, 4), an intermediate portion (1B) comprising air ducts (9, 10), and an upper portion (1C), which is fixedly connected to a steering engine (14, 18, 19), with a gear ring (14) to be fixed at said base (15). A cooling system comprising having at least one fan (7) is mounted within the seating.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: August 31, 2004
    Assignee: Rolls-Royce Aktiebolag
    Inventor: Stig Lönngren
  • Publication number: 20030148676
    Abstract: The invention relates to a pod unit comprising a pod housing (1) and an assembly unit (6), a so called seating, for the pod housing (1), wherein the seating (6) comprises a lower portion (6A) and an upper portion (6F) as well as a base (15) for the installation of said pod housing (1) which comprises a lower casing portion (1A) for the accommodation of a propulsion unit (2, 3, 4), an intermediate portion (1B) comprising air ducts (9, 10), and an upper portion (13), which is fixedly connected to a steering engine (14, 18, 19), with a gear ring (14) to be fixed at said base (15). The invention is characterised therein that a cooling system comprising at least a fan (7) is mounted within the seating (6).
    Type: Application
    Filed: October 21, 2002
    Publication date: August 7, 2003
    Inventor: Stig Lonngren
  • Patent number: 6165031
    Abstract: A marine propulsion and steering unit (10) comprises a pod (13) having front and rear ends, a driving machine (14), e.g. a drive motor, accommodated in the pod, a substantially horizontal propeller shaft (15) drivingly connected to the driving machine and provided with a propeller (18) externally of the front end of the pod (13), and an upright pod supporting strut (12) rigidly attached to the pod and having at the upper end thereof swivel bearing means (11) supporting the pod supporting strut and the pod below a buoyant body for angular motion about a substantially vertical axis (C). The pod supporting strut (12) is shaped essentially as an upstanding airfoil the chord plane (V) of which contains or is proximal to the axis (T) of the propeller shaft (15) and the leading edge (12A) of which is directed towards the propeller (18).
    Type: Grant
    Filed: December 4, 1998
    Date of Patent: December 26, 2000
    Assignee: Kamewa AB
    Inventors: Stig Lonngren, Jan Pettersson