In re Saurer

This is an appeal from a decision of the Board of Appeals of the United States Patent Office, affirming that of the Primary Examiner rejecting, in view of the prior art, claim 6, the only claim, of an application for a patent for improvement in the method of and apparatus for forming the explosive mixture in direct injection high speed internal combustion engines.

The claim reads as follows:

6. The method of forming the explosive mixture in a self-igniting direct injection high speed internal combustion engine, in which the piston is provided in its head with a toroidal combustion chamber…