Michael S Muir

US Patent:

57160554, Feb 10, 1998

Filed:

Jul 22, 1996

Appl. No.:

8/684789

Inventors:

Mark R. Wilkinson - Huntington MA
Chester S. Hopper - Newton CT
Leslie K. Muir - Corona CA
Michael S. Muir - Corona CA

Assignee:

Calconn, Inc. - Newton CT

International Classification:

F16J 1522
F16J 1524

US Classification:

277102

Abstract:

A minimum leakage packing system is provided for sealing pump shafts and the like. The packing is manufactured from twisted, exfoliated extruded, pultruded or slit graphite material that is braided, twisted, laid up or otherwise combined to form mechanical packing. A lubricant and/or sealant may be applied to the finished packing. Graphite foil may be applied to the packing for enhanced properties. The packing system preferably consists of a precision wedge set and at least three rings including compressible graphite material, the rings compressed to different percentages of their original heights. The outside rings will have the most compression and the inner ring or rings of the multi-ring assembly the least. All should be compressed less than the maximum amount to permit high conformance to the surface being sealed. The system may have an optional gasket washer following the last ring of compressed graphite material.

US Patent:

56879741, Nov 18, 1997

Filed:

Mar 15, 1996

Appl. No.:

8/617521

Inventors:

Mark R. Wilkinson - Huntington MA
Chester S. Hopper - Newton CT
Leslie K. Muir - Corona CA
Michael S. Muir - Corona CA

Assignee:

Calconn, Inc. - Newton CT

International Classification:

F16J 1522

US Classification:

277102

Abstract:

A minimum leakage packing system is provided for sealing pump shafts and the like. The packing is manufactured from twisted, exfoliated extruded, pultruded or slit graphite material that is braided, twisted, laid up or otherwise combined to form mechanical packing. A lubricant and/or sealant may be applied to the finished packing. Graphite foil may be applied to the packing for enhanced properties. The packing system preferably consists of a precision wedge set and at least three rings including compressible graphite material, the rings compressed to different percentages of their original heights. The outside rings will have the most compression and the inner ring or rings of the multi-ring assembly the least. All should be compressed less than the maximum amount to permit high conformance to the surface being sealed. The system may have an optional gasket washer following the last ring of compressed graphite material.