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US 8,939,174 B2Granted
Cartridge EGR valve assembly
AssigneeMack Trucks, Inc.
InventorsJohn Sponsky, John Lowe
Life of this patent
Estimating the term…
Abstract
A drop-in cartridge style, four-chamber EGR valve, includes a valve actuator, a valve stem extending from the valve actuator and having two valve heads mutually spaced on the stem, and a frame having a plurality of longitudinally extending members connected by at least first and second ring members, the frame being divided along a longitudinal axis into two mating parts.
Claims7
A four-chamber drop-in cartridge valve assembly, comprising:
- a valve actuator;
- a valve stem extending longitudinally from the valve actuator and having two valve heads mutually spaced on the stem;
- and,
- a frame attached to the valve actuator and extending longitudinally therefrom, the frame including first and second circumferential members, the first and second circumferential members each having formed thereon a valve seat for one of said valve heads, the frame being separable along a longitudinal axis into two parts.
1 more element
A method of assembling a valve cartridge assembly for an exhaust gas recirculation valve, comprising the steps of:
- providing a valve actuator;
- mounting to the valve actuator a valve stem to extend longitudinally therefrom, the valve stem having two valve heads mutually spaced thereon;
- mounting to the valve actuator a first frame part having a plurality of longitudinal members connected by at least first and second semi-circumferential members, the first and second semi-circumferential members each having formed thereon a portion of a valve seat for one of said valve heads, the frame partly enclosing the valve stem and valve heads;
- and,
- mounting to the valve actuator a second frame part having a plurality of longitudinal members connected by at least first and second semi-circumferential members, the first and second semi-circumferential members each having formed thereon a portion of a valve seat for one of said valve heads, wherein, the first and second frame parts are joined to enclose the valve stem and valve heads, the semi-circumferential members being joined to form valve seats.
2 more elements
Dependencies are inferred from the claim text.