|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||220/324 ; 220/347 ; 215/231 ; 215/284|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 14 인용 특허 : 0|
An unloading valve for hopper cars used for transporting dry fluent material such as carbon black. An unloading pipe extends outwardly from the bottom of the hopper, and a closure removably attaches at the end of the pipe. The closure includes a plug extending within the pipe and presenting a surface that confronts the dry fluent material adjacent the inner end of the pipe. This surface has an angle selected to cause fluent material loaded into the hopper to become packed at the inner end of the pipe during loading and subsequent shipment of the hopper c...
An apparatus controlling the flow of dry fluent material from a compartment containing a supply of such material, comprising: means defining an open ended bore in communication with the compartment for withdrawal of the fluent material from the compartment; plug means removably disposed in the bore defining a closed position that prevents unwanted material flow therethrough; and the plug means having an inclined surface at least partially confronting the fluent material within the bore at an angle operative to cause the fluent material to become packed i...