Shutoff valve and filter in thermoplastic material supply system

Details Shutoff valve and filter in thermoplastic material supply system Shutoff valve and filter in thermoplastic material supply system

1995-10-30

1999-04-06

Rivell, John

Fluid handling

With means for separating solid material from the fluid

Planar strainer normal to flow path

210234, 210432, B01D 3502

Patent

active

058905146

ABSTRACT:
A system for supplying molten thermoplastic material to a dispenser comprises a hopper for storing the thermoplastic material. A heating grid is associated with the hopper for heating and melting the thermoplastic material. A reservoir block receives melted material from the grid. The reservoir block includes a reservoir into which the melted material flows from the grid. A manifold and pump assembly is connected to the reservoir block for receiving material from the manifold block and pumping the material to a dispenser. A valve and filter assembly is mounted in the reservoir block. The valve and filter assembly includes a valve member capable of moving between an open position and a closed position for blocking the flow the material through the reservoir block, and includes a filter member for filtering material, the filter being removable to clean the filter.

REFERENCES:
patent: 2057779 (1936-10-01), Jacobs
patent: 3645401 (1972-02-01), Roberts
patent: 3912630 (1975-10-01), Reighard et al.
patent: 3964645 (1976-06-01), Scholl
patent: 4615812 (1986-10-01), Darling
patent: 4666066 (1987-05-01), Boccagno et al.
patent: 4701118 (1987-10-01), Koching et al.
patent: 4722794 (1988-02-01), Duncan
patent: 4725215 (1988-02-01), Kreyenborg et al.
patent: 4832077 (1989-05-01), Pilolla
patent: 4946047 (1990-08-01), Kurokawa et al.

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