Patents by Inventor Andrzej Stawniak

Andrzej Stawniak 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: 5971129
    Abstract: A conveyor belt (1) for persons includes several sections (2, 3, 4, 5, 6) with a first section (2) and a second section (3) forming an acceleration portion (7), in which the persons to be transported are accelerated from a low initial speed, which is unproblematic for stepping onto the conveyor belt (1) for persons, to a constant transport speed of a main portion (8) formed by a third section (4). Connected downstream of the main section (8) is a retardation portion (9), which is formed by means of a fourth section (5) and a fifth section (6) and in which the persons to be transported are retarded from the transport speed to a low final speed, which is unproblematic for departure from the conveyor belt (1) for persons. Arranged at each section transition is a respective transition device (10) having a roller (20, 20.11, 36, 37) by means of which the persons are guided free of risk from one section to the other.
    Type: Grant
    Filed: December 30, 1997
    Date of Patent: October 26, 1999
    Assignee: Inventio AG
    Inventors: Andrzej Stawniak, Harald Nusime
  • Patent number: 5611417
    Abstract: An apparatus for stopping passenger conveyors, such as escalators and moving walkways having at least one comb plate, responds to movement of the comb plate due to an applied force to actuate a safety switch. The apparatus exerts a static trigger force on the comb plate which trigger force has horizontal and vertical components. The comb plate is movable horizontally and vertically against a static trigger force when the applied force exceeds one or both of the horizontal and vertical components. The trigger force is set by a biased trigger spring pivotally mounted on a carrier plate for the comb plate and acting at an adjustable angle relative to the horizontal plane permitting selection of the ratio of the horizontal component to the vertical component. The angular position can be reset manually within a certain angular range through engagement of detent notches on an abutment attached to the comb plate and detent pins connected to the trigger spring.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: March 18, 1997
    Assignee: Inventio AG
    Inventors: Andrzej Stawniak, Robert Ulrich