Patents by Inventor Ari Ketonen

Ari Ketonen 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: 5560165
    Abstract: The invention relates to a system for joining the frame of a landing door (7) of an elevator to the wall structure (4) surrounding the frame, in such a way that the elevator shaft (5) is isolated from the rest of the space in the building. According to the invention, a heat-resistant protective element (9) flexible in normal temperature and at least in a temperature of 500.degree. is fitted between the frame (8) and the wall structure (4), said element being attached to the door frame (8) and to the shaft wall structure (4).
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: October 1, 1996
    Assignee: KONE Oy
    Inventors: Leon Hoefsloot, Ari Ketonen
  • Patent number: 5445244
    Abstract: The invention relates to a system for forming the jambs for elevator landing doors in a door opening (3) in the wall (2) between the elevator shaft and the landing. The jambs (4) consist of a skeletal structure (15,16,17) placed at the sides and at the top of the door opening and supporting the jamb structure, the skeletal structure being fastened to the wall by means of brackets (9) in a manner permitting adjustment in the direction of the plane of the door opening. Attached onto the skeletal structure is a surface structure (27,28) adjustable in the direction of the thickness of the wall. Each skeletal structure module is fixed to a bracket (9) in such a way that the position of the skeletal structure module can be adjusted in the direction of the plane of the door opening separately on the shaft side and on the landing side.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: August 29, 1995
    Assignee: Kone Oy
    Inventor: Ari Ketonen
  • Patent number: 5373916
    Abstract: The invention relates to a safety apparatus mounted in the doorway of an elevator shaft to prevent people, animals and objects from falling down into the shaft. The safety apparatus comprises a collapsible safety wall composed of laminae (1) and supported by telescopic bars (2). The bars (2) are inserted through holes provided in the laminae and attached by their ends to separate supporting structures (3) either with or without hinges (4).
    Type: Grant
    Filed: September 7, 1993
    Date of Patent: December 20, 1994
    Assignee: Kone Elevator GmbH
    Inventors: Seppo J. Kiviniemi, Ari Ketonen