Application of Homer E. Thornhill

RICH, Judge.

This appeal is from the decision of the Patent Office Board of Appeals affirming the rejection of claims 16 and 17 in application Ser. No. 593,636, filed June 25, 1956, entitled “Thread System.” Claims 11, 13 and 15 were allowed by the board.

Appellant’s invention is directed to a tapered threaded joint composed of male and female threaded members having the same tapers and the same thread standards so as to fit closely together. The primary object of this invention is “to provide a tapered thread system that can be made-up1 without permanent damage *464to the thread system and that…