Method and device for transporting powdery substances
2 Assignments
0 Petitions
Accused Products
Abstract
In a piston metering pump for supplying the atomizer of a powder coating machine, the vacuum generated in the pump chamber during the suction movement of the piston is reduced in controlled fashion by introducing transport air in order to reduce the powder throughput.
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Citations
37 Claims
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1. (Cancelled)
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18. (Cancelled)
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19. An apparatus for moving powder comprising:
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a housing defining a chamber with a first powder inlet piercing said chamber and a first powder outlet piercing said chamber and a first inlet opening piercing said chamber and spaced from said first powder inlet and said first powder outlet;
a piston moveable in said chamber and having an outer diameter; and
a valve positioned adjacent said first inlet opening and moveable between an open position and closed position to selectively open and close said first inlet opening. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. A method for moving powder comprising the steps of:
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defining a chamber with a housing wherein a first powder inlet piercing said chamber and a first powder outlet piercing said chamber and a first inlet opening piercing said chamber and spaced from said first powder inlet and said first powder outlet;
moving a piston having an outer diameter in said chamber; and
position a valve adjacent said first inlet opening wherein said valve being moveable between an open position and closed position to selectively open and close said first inlet opening. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification