06948535 is referenced by 19 patents and cites 19 patents.

The present invention is directed to an apparatus and method for accurately metering and conveying a dry powder or granular material to a blender in a substantially closed system. The apparatus includes a storage tank adapted to hold the dry powder or granular material, a hopper disposed inside of the storage tank; and a conveyor at least partially disposed inside of the storage tank, which delivers the dry powder or granular material to the hopper. The apparatus also includes a metering feeder adapted to deliver the dry powder or granular material at a substantially uniform density from the hopper to a blender located outside of the storage tank. The apparatus is a substantially closed system, thus minimizing the risk that the dry powder or granular material will become airborne.

Title
Apparatus and method for accurately metering and conveying dry powder or granular materials to a blender in a substantially closed system
Application Number
10/757861
Publication Number
6948535 (B2)
Application Date
January 15, 2004
Publication Date
September 27, 2005
Inventor
Calvin L Stegemoeller
Duncan
OK, US
Agent
Baker Botts L
John W Wustenberg
Assignee
Halliburton Energy Services
OK, US
IPC
B65B 001/04
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