Patents by Inventor Arvid Eriksson

Arvid Eriksson 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: 5099957
    Abstract: A procedure and apparatus for controlling a hydraulic elevator during approach to a landing are disclosed, in which the speed of the elevator and the temperature of the hydraulic fluid are measured prior to beginning deceleration of the elevator. The deceleration point is adjusted on the basis of the speed and temperature information. The elevator passes a deceleration flag while approaching a landing, which is used to measure the speed of the elevator, and to provide a reference point from which the location of the deceleration point is determined. At temperatures exceeding a given reference temperature, the normal deceleration point is shifted from the leading edge of the deceleration flag to its trailing edge, and the start of actual deceleration of the elevator is delayed in relation to the deceleration point (trailing edge of the deceleration flag) by an amount depending on the elevator speed and oil temperature.
    Type: Grant
    Filed: June 4, 1991
    Date of Patent: March 31, 1992
    Assignee: Kone Elevator GmbH
    Inventor: Arvid Eriksson
  • Patent number: 4340131
    Abstract: Operational control system for lift and elevator machinery adapted for electrodynamic braking, said operational control system being adapted to be connected to the machinery of existing lift or elevator equipment. The operational control system is designed for one-speed A.C. synchronous motors of the short-circuit type forming part of operational control units provided with a simple mechanical brake. The operational control system improves the stop-plane exactitude and reduces brake wear. In the operational control system electrodynamic and mechanical braking is combined, the control being performed via a reference voltage formed from an output signal received from a speed-sensing member.
    Type: Grant
    Filed: December 19, 1980
    Date of Patent: July 20, 1982
    Assignee: Elevator GmbH
    Inventor: Arvid Eriksson