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1. (WO2019032867) SEALING RING HAVING A POROUS LAYER
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/032867 International Application No.: PCT/US2018/046065
Publication Date: 14.02.2019 International Filing Date: 09.08.2018
IPC:
F16J 9/08 (2006.01) ,F04B 53/02 (2006.01) ,F16J 9/26 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
9
Piston-rings, seats therefor; Ring sealings of similar construction in general
08
with expansion obtained by pressure of the medium
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53
Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
02
Packing the free space between cylinders and pistons
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
J
PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS
9
Piston-rings, seats therefor; Ring sealings of similar construction in general
26
characterised by the use of particular materials
Applicants:
ETAGEN, INC. [US/US]; 3601 Haven Avenue Menlo Park, California 94025, US
Inventors:
PRUDHOMME, Jodie; US
Agent:
SHVARTS, Alexander; US
LEIZ, James; US
RAPOPORT, Maxim; US
LEE, Andrew; US
Priority Data:
62/543,29409.08.2017US
Title (EN) SEALING RING HAVING A POROUS LAYER
(FR) BAGUE D'ÉTANCHÉITÉ DOTÉE D'UNE COUCHE POREUSE
Abstract:
(EN) A sealing ring segment (200) of a sealing ring assembly may include three layers (201, 202, 203). The middle layer (202) is permeable to gas, thus allowing radial pressure-balancing on the sealing ring segment to reduce wear. The gas-permeable layer allows gas to permeate from a highpressure region to a clearance gap between a radially outer surface (204) of the segment and a bore of a cylinder. The flow of gas affects the pressure at the radially outer surface, thus reducing the resultant radial outward force on the segment, as compared to no gas permeation. The gas-permeable layer may be porous, sintered, or have any other suitable structure having suitable gas permeability properties. The gas-permeable layer may be positioned central or rearward axially, in relation to the outer layers. The gas-permeable layer may extend the full radial thickness of the sealing ring segment.
(FR) L'invention concerne un ensemble bague d'étanchéité comportant un segment (200) de bague d'étanchéité pouvant comprendre trois couches (201, 202, 203). La couche intermédiaire (202) est perméable au gaz, permettant ainsi un équilibrage de la pression radial sur le segment de bague d'étanchéité en vue de réduire l'usure. La couche perméable au gaz permet la pénétration du gaz d'une région à haute pression à un espace avec jeu entre une face radialement externe (204) du segment et un alésage d'un cylindre. L'écoulement de gaz affecte la pression au niveau de la face radialement externe, réduisant ainsi la force radiale vers l'extérieur résultante sur le segment, comparativement à l'absence de pénétration de gaz. La couche perméable au gaz peut être poreuse, frittée ou avoir toute autre structure convenable présentant des propriétés appropriées de perméabilité au gaz. La couche perméable au gaz peut être positionnée centralement ou axialement vers l'arrière, par rapport aux couches externes. La couche perméable au gaz peut agrandir l'épaisseur radiale totale du segment de bague d'étanchéité.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)