Hand-valve Control Patents (Class 291/16)
  • Patent number: 11970191
    Abstract: A combined track conditioning unit includes a dispensing apparatus with an outflow opening integrated in the front region of the dispensing apparatus which is suitable for applying a gaseous drying medium to a rail. A gritting material outlet unit which is integrated in the rear region of the dispensing apparatus and is suitable for applying a gritting agent to the rail also forms part of the dispensing apparatus. A rail vehicle is also provided. Additionally, a method for increasing a coefficient of friction between a rail and a wheel of a rail vehicle with the aid of a track conditioning unit is provided.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: April 30, 2024
    Assignee: Siemens Mobility GmbH
    Inventors: Ronny Boege, Wilfried Stelzle
  • Patent number: 4852949
    Abstract: This invention consists of a funnel mounted near the wheel well of a vehicle, which contains marble chips and is activated when a button located on the steering wheel is depressed. The flow of marble chips continues until the button is depressed a second time.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: August 1, 1989
    Inventors: Michael H. Quinn, Paul H. Quinn