Receptacles – Stationary tank – Underground
Reexamination Certificate
2006-08-15
2006-08-15
Pascua, Jes F. (Department: 3727)
Receptacles
Stationary tank
Underground
C220S560030, C220S062110, C220S062150, C220S062220, C220S612000, C220S613000, C220S677000, C220S679000, C220S678000, C220S669000, C220S608000, C220S609000, C220S567200
Reexamination Certificate
active
07090091
ABSTRACT:
A large-volume container for holding liquid media is composed of two shell-like end parts each having a ring-shaped flat contact surface, and at least one sleeve-like middle part composed of two ring segments and provided with two ring-shaped flat contact surfaces and an opening for filling and emptying. The two end parts as well as the ring segments of the middle part are manufactured by blow molding with an inner layer and an outer layer, are provided with external stiffening ribs formed as chambers, and are connected in the areas of their contact surfaces by an inner and outer weld. The two end parts as well as the ring segments have in the areas of their contact surfaces a circumferential chamber, wherein the contact surfaces have at their circumferential boundary edges backwardly extending inclinations for forming welding grooves between the end parts and/or the ring segments.
REFERENCES:
patent: 3746204 (1973-07-01), Nagai
patent: 5697511 (1997-12-01), Bampton
patent: 6077578 (2000-06-01), Valyi
patent: 6220779 (2001-04-01), Warner et al.
patent: 2002/0053568 (2002-05-01), Balzer et al.
Braden Shawn M
Friedrich Kueffner
Pascua Jes F.
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