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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0488314 (1990-03-05) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 40 인용 특허 : 8 |
A multiple-choke unit for transporting and metering particulate material wherein the material is compacted to bridging, disturbed and then recompacted as it is friction driven through a duct. The duct has two opposed walls moving between the inlet and outlet which have a surface area that is larger
An apparatus for transporting particulate material comprising: a housing having an inlet, an outlet and a duct between said inlet and outlet, said duct being formed between two opposed friction drive walls movable relative to said pump housing from said inlet towards said outlet and one or more stat
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