| 摘要 |
Vacuum based filling devices will allow the user to transfer quantities of heavy or difficult to manage materials from a dependent position into a delivery system or storage container at a higher elevation or less accessible position. This allows the person filling the delivery system or storage container to remain at a safe and convenient location while operating the vacuum based filling system. For example, in the case of a feeder for animals, the user would be able to fill the storage portion of the feeder from ground level without having to climb a ladder or other unsafe device in order to elevate the feed and place it into the feeder.
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