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US 4,034,478 AGranted
Valve seat concentricity gage
AssigneeThe Bendix Corporation
InventorWilliam Henry Yager
Life of this patent
Estimating the term…
Abstract
A gage for measuring concentricity between a bore and a countersunk valve seat, said gage having a stem for insertion into the bore and a partially-spherical surface (24) on a spindle member for engaging the valve seat. The spindle member is rotated through 180.degree. to obtain the measurement, while a pair of gaging circuits indicate respective clearances between an upper extension of the stem and the spindle member at the theoretical center of the partially-spherical surface.
Claims2
A concentricity gaging arrangement for gaging eccentricity between centers of a bore and an aligned countersink comprising:
- arbor means including a stem arbor adapted to be aligned with said bore and having an extension portion thereon extending through said countersink;
- a spindle member having an at least partially spherical surface formed thereon and adapted to be received within said countersink, and further having a bore formed therein passing through the center of said spherical surface, said bore adapted to receive said stem arbor extension portion with a clearance space therebetween;
- gaging means generating signals corresponding to the clearance space between said stem arbor extension and said bore in said spindle member at a point even with the center of said spherical surface and at least one point about the circumference of said bore in said spindle member.
Dependencies are inferred from the claim text.