Portable four cycle backpack pendulous vibrator

Details Portable four cycle backpack pendulous vibrator Portable four cycle backpack pendulous vibrator

1996-06-28

1998-02-10

Cooley, Charles E.

Agitating

By vibration

Of stirrer

224265, 224643, 224644, B01F 1104

Patent

active

057161313

ABSTRACT:
A portable concrete vibrator system comprising a backpack-borne four cycle engine that powers a pendulous vibrator. The backpack comprises a rigid frame mounting a four cycle motor that is connected to the vibrator by a flex-shaft and isolated therefrom by an in-line compensator. 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 protrudes from the bottom. An integral belt tensioner on each side of the belt permits the user to tighten one or both belt sides to adjust belt tightness. The backpack vibration dampening system is removable for cleaning or adjustment. The dampening system preferably comprises a thick pad that has a pair of slip-on cuffs to captivate the ends of both shoulder harnesses. A plurality of snaps or other conventional attachment points secure the remainder of the system to the frame. The frame also mounts a pair of ergonomic controls that may be easily manipulated by the user to control the power unit. The elongated flex-cable that connects the vibrator to the four cycle engine includes an internal compensator that accommodates vibrational stresses and thermal expansion and contraction.

REFERENCES:
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patent: 4644654 (1987-02-01), Howe et al.
patent: 4662551 (1987-05-01), Dudley et al.

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