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A process for manufacturing an air flow throttle valve assembly in which the valve disc or blade is precisely sized and centered after assembly to the shaft and throttle body by heating and squeezing of the disc, preferably while the shaft is held at a shallow angle to extrude the perimeter slightly

A process for manufacturing an air flow throttle valve assembly in which the valve disc or blade is precisely sized and centered after assembly to the shaft and throttle body by heating and squeezing of the disc, preferably while the shaft is held at a shallow angle to extrude the perimeter slightly out to the bore wall. After cooling, the shaft angle is reset to a slightly greater angle.

대표청구항 ▼

[ I claim:] [1.] A process for manufacturing an air flow throttle valve comprised of a throttle body formed with an air flow passage comprising a bore extending along an axis through said throttle body, and a valve disc mounted on a pivoted shaft extending across said bore, said process comprising t

[ I claim:] [1.] A process for manufacturing an air flow throttle valve comprised of a throttle body formed with an air flow passage comprising a bore extending along an axis through said throttle body, and a valve disc mounted on a pivoted shaft extending across said bore, said process comprising the steps of:making said throttle body, disc and shaft as separate parts, with said disc constructed of a deformable material and undersized with respect to said bore;assembling said shaft to said throttle body so as to extend across said bore of said throttle body, and assembling said disc to said shaft within said bore;finally sizing said disc by deforming said disc to cause said disc material to flow radially outward to a wall defining said throttle body bore.