In re Heinrich

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the rejection by the Primary Examiner of Claims 32 to 39, inclusive, of appellant’s application for a patent on a sealing system for shafts and the like. Claims 32 and 36, which are representative of the appealed claims, are as follows:

32. In a sealing system for shafts and the like, a sealing unit comprising a carbon sealing ring having a frusto-conical surface tapering at an angle which, projected against an imaginary reference plane paralleling the central axis of the sealing ring,…