Normally Operative Patents (Class 191/77)
Automatic (Class 191/78)
Rope-retracted (Class 191/79)
  • Conductive shoe assembly for trolley or the like
    Patent number: 4221282
    Abstract: An assembly for attaching a conductive shoe to a trolley or like vehicle, wherein a pair of elastic rods function to bias the conductive shoe into gliding, electrical contact with a conducting rail in spite of changing distances therebetween, with the elastic rods also providing electrical insulation between the conductive shoe and the trolley, effectively reducing the overall weight of the shoe.
    Type: Grant
    Filed: May 23, 1978
    Date of Patent: September 9, 1980
    Assignee: Wampfler GmbH
    Inventor: Manfred Wampfler