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:
Jun. 19, 2001
Filed:
Aug. 29, 1997
John S. Forry, Lancaster, PA (US);
Brian C. Lehr, Pequea, PA (US);
Interface Solutions, Inc., Lancaster, PA (US);
Abstract
A gasket which is compression-failure resistant, even at operating flange pressures in the range of from about 3,000 to about 15,000 PSI and also has a good sealing ability, comprises a soft gasket material having two opposed, facial surfaces and an aperture with an edge perpendicular to the facial surfaces, wherein the edge of the aperture has a polymer coating (coating A) on the edge for a good sealing ability. In this embodiment, except for coating A, the gasket is otherwise not coated which makes the gasket compression-failure resistant. In embodiments which need even better sealing ability, at least one of the opposed, facial surfaces has polymer coating B, which may abut both the edge and polymer coating A, wherein polymer coating B on the facial, opposed surface leaves the gasket uncoated for sealing ability in an amount effective to give the gasket compression failure resistance.