Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Plural sequential shaping or molding steps on same workpiece
Patent
1986-12-22
1988-04-26
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Plural sequential shaping or molding steps on same workpiece
264 31, 264333, 404112, B28B 1108, E01C 1942, E04B 116
Patent
active
047403489
ABSTRACT:
An improved method and apparatus for finishing freshly poured concrete. The method includes floating a power trowel on the liquid-particulate surface of freshly poured concrete to produce a smooth, level surface finish prior to the concrete's hardening sufficiently to support the weight of an individual.
REFERENCES:
patent: 2289248 (1942-07-01), Davis
patent: 2882805 (1959-04-01), Sieber
patent: 2888863 (1959-06-01), Eisenbeis
patent: 3130653 (1964-04-01), Talbott
patent: 3791754 (1974-02-01), Zochil
patent: 4320986 (1982-03-01), Morrison
patent: 4629359 (1986-12-01), Sengupta
Kutach Karen D.
Silbaugh Jan H.
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