Plastic article or earthenware shaping or treating: apparatus – Vibrating means including mechanical movement or power means
Patent
1989-06-22
1991-02-05
Purol, David M.
Plastic article or earthenware shaping or treating: apparatus
Vibrating means including mechanical movement or power means
2482055, 248362, 294 641, 366108, B28B 1100
Patent
active
049900820
ABSTRACT:
An improved vibrator for architectural or civil engineering use is disclosed. The vibrator includes a vibrating means which is either a conventional reciprocating or rotating vibrator, and a suction means which is integrally formed with the vibrating means and has at least one suction member to be attached to the forming molds. The suction means of the improved vibrator enables an air tight connection between the vibrator and the forming molds. The suction means is substantially in the shape of a disc with an air passage formed therein to be operated via an air pump to produce a low pressure area in the disc body. The suction member comprises at least one flexible gasket at the periphery of the disc body which is attached to the forming mold to form an ideal attachment.
REFERENCES:
patent: 762499 (1904-06-01), Sprague
patent: 799922 (1905-09-01), Moxham
patent: 2783018 (1957-02-01), Lytle
patent: 2853333 (1958-09-01), Littell
patent: 3152828 (1964-10-01), Lytle
patent: 3853345 (1974-12-01), Miller
patent: 3910620 (1975-10-01), Sperry
patent: 4579697 (1986-04-01), Takano
patent: 4580456 (1986-04-01), Takano
Olson Robert A.
Purol David M.
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