Fluid handling – Processes – Cleaning – repairing – or assembling
Reexamination Certificate
2006-10-10
2006-10-10
Hepperle, Stephen M. (Department: 3753)
Fluid handling
Processes
Cleaning, repairing, or assembling
C137S554000, C137S560000
Reexamination Certificate
active
07117880
ABSTRACT:
An apparatus and a method for managing fuel vapor pressure in a fuel system that supplies fuel to an internal combustion engine. The fuel vapor pressure management apparatus performs leak detection on a headspace of the fuel system, performs excess negative pressure relief of the headspace, and performs excess positive pressure relief of the headspace. The apparatus includes a housing, a pressure operable device, and a printed circuit board. The housing defines an interior chamber. The pressure operable device separates the interior chamber into first and second portions. And the pressure operable device includes a poppet that moves along an axis and a seal that is adapted to cooperatively engage the poppet. The printed circuit board is supported by the housing in the interior chamber. And the printed circuit board includes a sensor that is adapted to be actuated by movement of the poppet along the axis.
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PCT International Search Report (PCT/CA 03/01440), Mailed Jan. 26, 2004.
Perry Paul
Veinotte Andre
Hepperle Stephen M.
Siemens VDO Automotive Inc.
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