In re Boyd

This is an appeal from a decision of the Board of Appeals of the United States Patent Office, affirming the decision of the examiner, rejecting claims 9, 10, and 11, being all the claims of appellants’ application, filed July 3, 1926, as unpatentable over the prior art.

Claim 9 is illustrative of the claims on appeal and reads as follows:

9. As an improved article of manufacture, the herein described piston comprising in a single integral element an annular body with a thin metal webbing forming the skirt and head of the same, and uninterrupted uniformly tapered and radially extending…