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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.:

US 10030666 B1

PDFFull Text
Date of Patent:
Jul. 24, 2018

Filed:

Sep. 29, 2015

Porous media ventless seal

Applicant:

New Way Machine Components, Inc., Aston, PA (US);

Inventor:

Andrew J. Devitt, Media, PA (US);

Assignee:

NEW WAY MACHINE COMPONENTS, INC., Aston, PA (US);

Attorney:

Volpe and Koenig, P.C.

Primary Examiner:

Nicholas L Foster

Int. Cl.
CPC ...
F16J 15/40 (2006.01); F16J 15/16 (2006.01); F16J 15/34 (2006.01); F04D 29/10 (2006.01); F16C 33/12 (2006.01); F16C 17/04 (2006.01); F16C 3/02 (2006.01); F16C 33/74 (2006.01); F04D 29/12 (2006.01); F04D 29/057 (2006.01); F04D 29/041 (2006.01); F04D 29/051 (2006.01);
U.S. Cl.
CPC ...
F04D 29/104 (2013.01); F04D 29/0413 (2013.01); F04D 29/0416 (2013.01); F04D 29/057 (2013.01); F04D 29/0513 (2013.01); F04D 29/0516 (2013.01); F04D 29/122 (2013.01); F04D 29/124 (2013.01); F16C 3/02 (2013.01); F16C 17/04 (2013.01); F16C 33/128 (2013.01); F16C 33/74 (2013.01); F16J 15/342 (2013.01); F16J 15/3492 (2013.01); F16J 15/3496 (2013.01); F05D 2300/514 (2013.01);
Abstract

The use of externally-pressurized porous media in shaft sealing for turbomachinery is provided for single seals, tandem seals, double-opposed seals, and a ventless seal. These arrangements provide for significant benefits, such as the following: (a) external pressurization allows frozen seal faces to lift open before rotation, (b) pressure is distributed uniformly across the seal face, as opposed to allowing leakage to pass over it, (c) low flow rates of injected gas are possible, (d) the seal faces are self-defending due to the uniform pressure in the gap, and (e) complete elimination of venting process gas is possible. By employing externally-pressurized porous media sealing, a drastic simplification of seal design, as well as gas treatment and seal panel design, is possible.

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