F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/64
F16K 15/00 (2006.01) F02M 23/09 (2006.01) F16K 31/126 (2006.01) F16K 41/10 (2006.01)
Patent
CA 1112125
DECELERATION VALVE ABSTRACT OF THE DISCLOSURE A deceleration valve for use in a vehicle emission controls system is responsive to increased engine manifold vacuum (thereby indicating a vehicle deceleration) to vent the vehicle air cleaner through the intake manifold for a controlled period of time to eliminate exhaust backfiring and to reduce hydrocarbon emissions. The valve mechanism includes a diaphragm assembly comprising an annular flexible member having an outer periphery clamped to the valve housing and an inner periphery clamped between a pair of diaphragm plates. One of the diaphragm plates has an axially projecting portion which extends through the opening in the flexible member, The other diaphragm plate has a plurality of axially extending, resilient legs which circumscrible the axially projecting portion of the first diaphragm plate and are yieldable in a radial direction so that they are able to snap into a groove on the axially projecting portion when the valve is assembled. The axially projecting portion also receives a barbed pin which connects the diaphragm assembly with the valve. A check valve is carried in the diaphragm assembly, to control communication across the assembly.
331197
Canadian Fram Limited
Macrae & Co.
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