Land vehicles – Tank or boiler – Semitrailer tank vehicle
Reexamination Certificate
2008-07-29
2008-07-29
Phan, Hau V (Department: 3618)
Land vehicles
Tank or boiler
Semitrailer tank vehicle
C280S838000, C220S562000, C220S586000
Reexamination Certificate
active
11125594
ABSTRACT:
A hollow walled structure (22) includes a shell (36) having a wall defining an interior compartment (46). A first support, in the form of a baffle (48), is disposed within the interior compartment (46) and engages the shell (36) at two locations (52, 54). A second support, in the form of a post (83), engages the shell (36) and extends through the interior compartment (46) to intersect the baffle (48). The shell (36), baffle (48), and post (83) are formed concurrently from a thermoplastic material by a rotational molding process. The rotational molding process can entail operations of pre-heating interior portions of the mold, delivering heat to the interior portions of the mold, and/or filling the mold with excess thermoplastic material prior to preheating the mold. The rotationally molded structure (22) has sufficient strength to function as a tank for carrying a liquid (34) in a liquid transport apparatus (20).
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Print of Tank Apparatus offered for sale in or before 2003.
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Gresham Lowell W.
Jacobson Charlene R.
Meschkow Jordan M.
Phan Hau V
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