The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 14, 2010
Filed:
May. 16, 2006
Applicant:
Kevin Martin, Doylestown, PA (US);
Inventor:
Kevin Martin, Doylestown, PA (US);
Assignee:
SKF USA Inc., Kulpsville, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J 15/34 (2006.01);
U.S. Cl.
CPC ...
Abstract
An end face seal having two thin, opposed faces of a composite PDC/tungsten carbide or like material for example of a thickness of from about 2 to 5 mm to about 10 to 15 mm, brazed or adhesively adhered by an epoxy resin to a substrate of tungsten carbide or silicon carbide/nitride formed in a ring shape. Thereafter, the PDC layer is finish lapped to a flatness of about 1 to about 10 helium lightbands, with a rough lapping to 3 or 4 helium lightbands, and a finish lapping of about 1 helium lightband.