Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 17, 2018
Patent Application Number
15067742
Date Filed
March 11, 2016
Patent Citations Received
Patent Primary Examiner
Patent abstract
A zipwire trolley having a plurality of zipwire engaging rollers, a swivelable brake block assembly adjacent to one of the rollers, the brake block having a zipwire-engaging cam by which the roller can be at least partially lifted off the zipwire when the trolley is moving in a rearward direction, the cam having a pair of tapered sidewalls tending to pinch respectively opposite sides of the upper part of the zipwire as the brake block progressively rotates when the trolley is moving in a rearward direction, thereby preventing or inhibiting further rearward movement of the trolley.
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