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Time-tested, joint-free conductor bar systems.

As of January 31, 2022, U-S Safety Trolley will no longer be accepting new system orders for our Span-Guard, Tri-Bar/Four-Bar, PowerGlide, or Tightwire products. Please reach out to your local representative for more information and inquiries about replacement parts (subject to availability).

For nearly 60 years, U-S Safety Trolley (a division of Starline Holdings, LLC.) has been an innovator in delivering flexible power solutions to a variety of industries. In the 1960’s, the company recognized the need to bring safety to the manufacturing industry. U-S Safety Trolley pioneered no-joint electric conductor bars with our innovative crane electrification products including Span-Guard, Tri-Bar/Four-Bar, PowerGlide and TightWire