Blenders
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
May 1, 2003
app pub date -
Oct 7, 2002
filing date -
Oct 5, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a material transfer device (1), in particular for use with blenders associated with a material processing device such as a plastics extruding device. The material transfer device (1) can be used for controlling delivery of measured amounts of particulate material to or from a weigh hopper, or for mixing materials in a mixing chamber of the blender. The material transfer device (1) includes a pipe (2) defining a material delivery path. The pipe (2) has a material inlet (4) and a material outlet (5). An air inlet manifold (10) encircling the pipe (2) is connected by an air supply line (14) to a pressurised air supply. Air outlets (12) of the manifold (10) direct an air stream towards the outlet (5) of the pipe (2) to draw material through the pipe (2) from a hopper (6) of particulate material (7), the pipe inlet (4) being located within the hopper (6). An air inlet valve (16) in the air supply line (14) is connected to a controller (22) which is operable to open an shut the valve (16) for pulsing the gas steam to control the amount of material delivered through the pipe (2).
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