Patent ID: 8096315
Filing Date: 2012-01-17
Classification: B67D,F16K,Y10T

Abstract:
1. A shear valve that carries fuel from a branch or main fuel piping to fuel dispenser piping, comprising: a housing having an axial length extending between a first end and a second end thereof, said housing defining a shear groove on the outside circumference of the housing, said housing being initially unbroken at said shear groove but breakable at said shear groove in response to a shearing force; the housing containing an orifice therein forming a fuel flow path; a main poppet valve coupled to the housing that is adapted to close the fuel flow path to prevent flow of fuel; and a flexible leak skirt fixed to an exterior of the housing at a first location upstream of said shear groove and a second location downstream of said shear groove, said leak skirt surrounding the unbroken shear groove but not surrounding a remainder of said housing along said axial length thereof further upstream and downstream of said first and second locations to provide a leak containment chamber to contain fuel leaking through the shear groove in the event of a leak that subsequently occurs at the shear groove due to a break at said shear groove.