Double-bearing shaft for a vibrating screed

Details Double-bearing shaft for a vibrating screed Double-bearing shaft for a vibrating screed

1988-03-25

1989-05-23

Novosad, Stephen J.

Road structure, process, or apparatus

Apparatus

Means to agitate material

404119, 74 87, 384901, E01C 1938

Patent

active

048325252

ABSTRACT:
A portable vibrating screed includes a driven, vibratory rotatable shaft assembly mounted on an elongated frame equipped with means for screeding concrete. The shaft assembly includes a plurality of bearing assemblies spaced along the length of the shaft. Each bearing assembly includes a pair of separate bearing elements mounted on the shaft and supported in bearing supports secured to the frame. Failure of any single bearing element allows a companion bearing element in the same assembly to absorb all of the load imposed on such assembly to prevent shutdown and without impairing the needed vibration.

REFERENCES:
patent: 1943076 (1934-01-01), Jackson
patent: 2094910 (1937-10-01), Baily
patent: 4030873 (1977-06-01), Morrison
patent: 4213749 (1980-07-01), Morrison
patent: 4253778 (1981-03-01), Morrison
patent: 4340351 (1982-07-01), Owens
patent: 4386901 (1983-06-01), Morrison
patent: 4397580 (1983-08-01), Morrison
patent: 4397626 (1983-08-01), Morrison
patent: 4427358 (1984-01-01), Stilwell
patent: 4650366 (1987-03-01), Morrison
patent: 4701071 (1987-10-01), Morrison
patent: 4722638 (1988-02-01), Morrison

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