Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting
Patent
1984-07-16
1986-04-01
Silbaugh, Jan
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
264 69, 264 72, B28B 108
Patent
active
045796971
ABSTRACT:
A method and apparatus for curing concrete cement by packing the concrete with aid of a vibrator having a variable vibration speed. The vibration speed is selected according to the viscosity of the cement, as is the time period. The disclosed method and apparatus causes the cement to be uniformly settled and distributed throughout the objective space field.
REFERENCES:
patent: 2507302 (1950-05-01), Giertz-Hedstrom
patent: 2667679 (1954-02-01), Jackman
patent: 3042594 (1962-07-01), Hauth
patent: 3470279 (1969-09-01), Abbott
patent: 4079109 (1978-03-01), Helmrich et al.
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