Patents by Inventor Pekka Rantanen

Pekka Rantanen 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: 20050126859
    Abstract: In an elevator, preferably one without machine room, a hoisting machine engages a set of hoisting ropes via a traction sheave, said set of hoisting ropes having a load-bearing part twisted from steel wires of circular and/or non-circular cross-section, and in which elevator there is diverting pulleys of which some is made larger than traction sheave. The weight of the hoisting machine of the elevator is at most about ? of the weight of the nominal load of the elevator.
    Type: Application
    Filed: November 18, 2004
    Publication date: June 16, 2005
    Inventors: Esko Aulanko, Jorma Mustalahti, Pekka Rantanen, Simo Makimattila
  • Publication number: 20050060979
    Abstract: The invention relates to an elevator provided with a coated hoisting rope (9), in which elevator a hoisting machine engages a set of hoisting ropes by means of a traction sheave (5), said set of hoisting ropes comprising coated hoisting ropes (9) of substantially circular cross-section which have a load-bearing part twisted from strong steel wires (16). The cross-sectional area of the steel wires (16) of each hoisting rope is larger than about 0.015 mm2 and smaller than about 0.2 mm2, and the strength of the steel wires (16) is greater than about 2000 N/mm2. Moreover, the core of each hoisting rope (9) consisting of steel wires (16) is coated with a substantially thin sheath (17) softer than the core, forming the surface of the hoisting rope.
    Type: Application
    Filed: October 21, 2004
    Publication date: March 24, 2005
    Inventors: Esko Aulanko, Jorma Mustalahti, Pekka Rantanen, Simo Makimattila
  • Publication number: 20040016603
    Abstract: In an elevator, preferably one without machine room, a hoisting machine engages a set of hoisting ropes via a traction sheave, said set of hoisting ropes having a load-bearing part twisted from steel wires of circular and/or non-circular cross-section, and in which elevator the hoisting ropes support a counterweight and an elevator car moving on their tracks. The weight of the hoisting machine of the elevator is at most about ⅕ of the weight of the nominal load of the elevator.
    Type: Application
    Filed: June 3, 2003
    Publication date: January 29, 2004
    Inventors: Esko Aulanko, Jorma Mustalahti, Pekka Rantanen, Simo Makimattila
  • Publication number: 20040016602
    Abstract: In an elevator, preferably one without machine room, a hoisting machine engages a set of hoisting ropes via a traction sheave, said set of hoisting ropes comprising hoisting ropes of substantially circular cross-section. The ropes have a load-bearing part twisted from steel wires of circular and/or non-circular cross-section. The steel wires of the hoisting ropes have a cross-sectional area larger than about 0.015 mm2 and smaller than about 0.2 mm2 and a strength exceeding about 2000 N/mm2. The elevator preferably has a hoisting machine of substantially light weight relative to the nominal load.
    Type: Application
    Filed: June 3, 2003
    Publication date: January 29, 2004
    Inventors: Esko Aulanko, Jorma Mustalahti, Pekka Rantanen, Simo Makimattila
  • Publication number: 20030192743
    Abstract: A counterweight and an elevator car are suspended on a set of hoisting ropes. The elevator comprises one or more rope pulleys provided with rope grooves, one of said pulleys being a traction sheave driven by a drive machine and moving the set of hoisting ropes. At least one of the rope pulleys is provided with a coating bonded to the rope pulley and containing the rope grooves, said coating having a thickness that, at the bottom of the rope groove, is substantially less than half the thickness of the rope running in the rope groove and a hardness less than about 100 shoreA and greater than about 60 shoreA. In a preferred solution, the traction sheave is a rope pulley like this.
    Type: Application
    Filed: April 22, 2003
    Publication date: October 16, 2003
    Inventors: Esko Aulanko, Jorma Mustalahti, Pekka Rantanen, Simo Makimattila
  • Patent number: D511150
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: November 1, 2005
    Assignee: ABB Oy
    Inventors: Jukka Nurmi, Pekka Rantanen
  • Patent number: D512026
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: November 29, 2005
    Assignee: ABB Oy
    Inventors: Jukka Nurmi, Pekka Rantanen
  • Patent number: D512696
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: December 13, 2005
    Assignee: ABB Oy
    Inventors: Jukka Nurmi, Pekka Rantanen