Backpack mounted pivoting motor for concrete finishing

Agitating – By vibration – Of stirrer

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Details

224197, 224265, 224643, 224644, B01F 1104

Patent

active

058298746

ABSTRACT:
A portable concrete finishing system comprising a backpack-borne, pivoting engine that powers a selected tool. A rigid frame supporting a four cycle motor is connected to the tool by a flexible power shaft. A removable vibration absorption system isolates the user from stress. A pair of integral, divergent shoulder harnesses protrude from the backpack top and an encircling, semi-elastic waist belt encircles the bottom. An integral belt tensioner permits the user to adjust belt tightness. The dampening system comprises a removable pad that has a pair of slip-on cuffs to captivate the ends of both shoulder harnesses. The frame also mounts a pair of ergonomic controls that may be easily manipulated by the user to control the power unit. A bracket assembly secures the engine to the frame. The assembly comprises a bracket pivotally coupled to a support that is attached directly to the frame. The bracket and support are hinged by a pin. The bracket directly attaches to the engine. The engine pivots in response to tool manipulation. The elongated flex-cable that connects the tool to the four cycle engine includes an internal compensator that accommodates thermal expansion and contraction.

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