Cam tensioner for scraper blade assemblies

Details Cam tensioner for scraper blade assemblies Cam tensioner for scraper blade assemblies

B - Operations, Transporting

65

G

B65G 45/16 (2006.01)

Patent

CA 2293006

The present invention describes a tensioner for a scraper blade assembly that automatically increases the effective torque on the support arm over time. The tensioner is comprised of a torsion cam engaging the support arm of the scraper blade assembly, a torsion cable engaging the cam, a tension rod with a spring surrounding the rod secured to the torsion cable. Over time, as the scraper blade wears down and the spring force decreases, the torsion cam is slowly rotated to increase the torque arm of the invention and thereby increase the effective torque on the support arm and compensate for the decrease in spring force. This invention may be adapted for use with any existing scraper blade assembly.

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