04054161 is referenced by 35 patents and cites 6 patents.

Apparatus for filling an open-mouth container with fluent material, such as powdered, granular or liquid material, and for removing dust or vapor from within the container during filling, the apparatus comprising a delivery head adapted to be substantially centered with respect to the container above the container for delivery of the fluent material and for removal of dust and vapor from within the container during filling, a closure carried by the delivery head expandable from a collapsed position in which it is drawn up around the delivery head and an expanded position in which it sealingly engages the inside of the container adjacent the mouth of the container to close off the mouth of the container thereby to prevent escape of dust or vapor during filling, and an actuator carried by the delivery means for expanding and collapsing said closure.

Also disclosed is a method of de-aerating powdered material filling a container.

Title
Apparatus for filling a container and method of de-aerating material
Application Number
5/679216
Publication Number
4054161
Application Date
April 22, 1976
Publication Date
October 18, 1977
Inventor
Charles S Alack
St. Louis
MO, US
Agent
Koenig Senniger Powers and Leavitt
Assignee
Semi Bulk Systems
MO, US
IPC
B65B 1/04
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