Vibratory concrete screed with eccentric drive shaft

Details Vibratory concrete screed with eccentric drive shaft Vibratory concrete screed with eccentric drive shaft

1981-02-13

1982-07-20

Anderson, Philip E.

Plastic article or earthenware shaping or treating: apparatus

Vibrating means including mechanical movement or power means

264 69, 404118, 404120, B28B 108, E01C 1922, E01C 1930, B06B 116

Patent

active

043403514

ABSTRACT:
A light-weight, portable and sturdy vibratory concrete screed which may be fabricated in modular fashion from a plurality of interconnected, separable frame units. A framework is provided, having a series of spaced, parallel unitary frame members of triangular configuration, the corners of the base of each frame member being attached to a pair of screed plates and maintaining the screed plates in spaced-apart relationship. Side braces and base braces extend between adjacent frame members for framework rigidity. An eccentric shaft is supported for rotation in bearings mounted in the frame members. The shaft may be symmetrically located in order to impart uniform vibrations to the two screed plates, or may be offset in order to self-propel the concrete screed.

REFERENCES:
patent: 3164072 (1965-01-01), Blankenship et al.
patent: 3435740 (1969-04-01), McGall
patent: 4030873 (1977-06-01), Morrison
patent: 4213749 (1980-07-01), Morrison
patent: 4261694 (1981-04-01), Morrison

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