Back to results
US 6,328,021 B1Granted
Diaphragm for an integrated pressure management apparatus
AssigneeSiemens Canada Limited
InventorsPaul D. Perry, John E. Cook
Life of this patent
Estimating the term…
Abstract
A diaphragm for an integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.
Claims9
A diaphragm for separating signal and interior chambers in a housing of an integrated pressure management apparatus, the diaphragm comprising:
- a generally rigid central portion;
- and
- a relatively flexible annulus having an inner perimeter fixed to an insert and an outer perimeter adapted for sealingly engaging the housing, the outer perimeter engaging the housing to seal a first housing part defining the signal chamber with respect to a second housing part defining the interior chamber in the integrated pressure management apparatus.
Dependencies are inferred from the claim text.