Containment system
AssigneeEntegris, Inc.
InventorsBarry L. Rauworth, John M. Hennan
Life of this patent
Estimating the term…
Abstract
In a preferred embodiment, a blow molded drum has a port including a neck with exterior buttress threads and a port opening having a shoulder. A snap-in down tube assembly seats with the shoulder and has an upwardly extending nipple. The dispense head has a first flow duct extending to a nipple and a second flow duct leading to an annular space around the nipple for a return fluid line or for providing air or a gas for displacing withdrawn fluid. In a preferred embodiment the threaded nut provides an axial removal force that disengages the nipple engaging portion with the nipple as the retainer nut is loosened.
Claims10
A drum containment system for dispensing aggressive chemicals in liquid form, the system comprising:
- a plastic drum for containing the aggressive liquid chemicals, the drum having a top with port, the port having a neck portion extending upwardly therefrom and defining a port opening, the neck portion having at downwardly facing finger engagement portions,
- a down tube assembly comprising an annular support member having a plurality of resilient fingers each with an angled guide-in surface and an upwardly facing lock-in surface, the annular support member sized for insertion into the port opening, the down tube assembly further having an upwardly extending fluid connection portion and a down tube extending downwardly from the annular support member, whereby the down tube assembly can be lowered into and snapped into position with the resilient fingers in locking engagement with the downwardly facing finger engagement portions.
A drum containment system for dispensing aggressive chemicals in liquid form, the system comprising:
- a plastic drum for containing the aggressive liquid chemicals, the drum having a top with port, the port having a neck portion extending upwardly therefrom and defining a port opening, the neck portion having a downwardly facing finger engagement portions,
- a down tube assembly comprising an annular support member sized for insertion into the port opening, the down tube assembly further having an upwardly extending fluid connection portion and
- a down tube extending downwardly from the annular support member, whereby the down tube assembly can be lowered into engaged with the neck portion in the port opening, and
- a dispense head, the dispense head having a body, a downward extending cooperating fluid connection portion sized and positioned to connect with the upwardly extending fluid connection portion, and a retainer nut, the retainer nut adapted to threadingly engage the neck and to tighten and loosen thereon and to provide an upward force when loosened, the dispense head body having a force receiving portion operatively coupled to the retainer nut whereby when the retainer nut is loosened on the threaded neck portion the dispense head body is raised from the neck portion and the downwardly extending fluid connection portion is urged to separate with the upwardly extending fluid connection portion.
A containment system comprising
- a plastic container having a top with an upwardly extending neck portion and a port opening;
- a down tube assembly configured to drop into the port opening and snap onto said port to fix the position of the down tube assembly in said port, the down tube assembly having an upwardly extending fluid connection portion;
- and
- a dispense head configured to engage and seal with the port and having a downwardly extending fluid connection portion sized and positioned to sealingly engage with the upwardly extending fluid connection portion.
A containment system comprising a dispense head and a drum with a port opening, and a downtube assembly in the port opening, the dispense head connectable to the drum at the port opening where by the dispense head sealingly couples with the downtube assembly, the system further having a lifting mechanism for raising the dispense head as the dispense head is disconnected from the drum, whereby when the lifting mechanism is operated, the dispense head is raised and the dispense head decouples from the downtube.
Dependencies are inferred from the claim text.