Fluid handling – Destructible or deformable element controlled – Destructible element
Reexamination Certificate
2006-08-24
2009-12-08
Rivell, John (Department: 3753)
Fluid handling
Destructible or deformable element controlled
Destructible element
C137S068270, C137S910000, C052S001000, C052S098000
Reexamination Certificate
active
07628167
ABSTRACT:
Rectangular or circular vent apparatus for protecting a confined space having a vent aperture for relief of an overpressure condition is provided with each including vent structure having a vent unit adapted to be positioned over the vent aperture in normal closing relationship thereto. Each vent unit preferably includes at least one spring steel panel, or spring steel leaves positioned against a metal sheet, provided with a movable pressure relief portion having an initial position extending across the vent aperture. A backstop is provided for arresting the degree of movement of the spring steel. The spring steel panel or the spring steel leaves have a sufficient modulus of resilience and elasticity to cause the relief portion of the spring steel panel or the metal sheet to return to their respective initial positions from the open positions thereof upon relief of the overpressure condition in the confined space.
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Dom Guido
Eijkelenberg Tom
Jakus Guy
Fike Corporation
Hovey & Williams, LLP
Rivell John
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