Gas separation: apparatus – Solid sorbent apparatus – Having mountable casing
Reexamination Certificate
2000-12-27
2003-03-25
Simmons, David A. (Department: 1724)
Gas separation: apparatus
Solid sorbent apparatus
Having mountable casing
C055S502000, C123S519000
Reexamination Certificate
active
06537355
ABSTRACT:
TECHNICAL FIELD
This disclosure relates to evaporative emission treatment systems, and, more particularly, to an evaporative emission treatment device.
BACKGROUND
Evaporative emission treatment systems typically comprise a fuel tank, internal combustion engine, intake manifold assembly, carbon canister, and various lines and vents to treat evaporative emissions. The evaporative emissions typically contain evaporated fuel, or hydrocarbon vapors, that “bleed” from the aforementioned components during and after operating a motor vehicle. The carbon canisters trap the majority of hydrocarbon vapor that escapes from these components. However, carbon canisters do not completely prevent hydrocarbon vapor from being released into the atmosphere. As a result, conventional carbon canisters and evaporative emission treatment systems do not meet stringent emission regulations.
Consequently, there exists a need for an evaporative emission treatment device that prevents hydrocarbon vapor leakage into the atmosphere.
SUMMARY
The drawbacks and disadvantages of the prior art are overcome by the evaporative emission treatment device, and its method of manufacture, described herein. The evaporative emission treatment device comprises a monolith concentrically disposed in a shell. In addition, a sealing agent is concentrically disposed about the monolith, and in between the shell and monolith. The method for manufacturing an evaporative emission treatment device comprises disposing a sealing agent about a monolith to form a monolith/sealing agent subassembly. The monolith/sealing agent subassembly is concentrically disposed in a first half shell. The first half shell is connected and secured to a second half shell.
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U.S. patent application Ser. No. 09/999,554, Scardino et al., filed Nov. 30, 2001.
Alfred Peter
Ferguson Marshall
Martina Martin
Oemcke Jonathan M.
Scardino Eileen A.
Cichosz Vincent A.
Delphi Technologies Inc.
Lawrence Frank M.
Simmons David A.
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