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1. (WO1998049472) FRACTURED SEAL RING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049472 International Application No.: PCT/US1998/008786
Publication Date: 05.11.1998 International Filing Date: 29.04.1998
Chapter 2 Demand Filed: 27.11.1998
IPC:
B23D 31/00 (2006.01) ,F16J 9/14 (2006.01) ,F16J 9/28 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
D
PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
31
Shearing machines or shearing devices covered by none or more than one of the groups B23D15/-B23D29/137; Combinations of shearing machines
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
12
Details
14
Joint-closures
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
28
of non-metals
Applicants:
E.I. DU PONT DE NEMOURS AND COMPANY [US/US]; 1007 Market Street Wilmington, DE 19898, US
Inventors:
VAN RYPER, Richard, Gerard; US
MOTT, James, Ronald; US
RAYMOND, Arnold, Wayne; US
STENTA, Christopher, Scott; US
Agent:
MOYLES, Lisa, J.; E.I. du Pont de Nemours and Company Legal Patent Records Center 1007 Market Street Wilmington, DE 19898, US
BELOPOLSKY, Inna, Y.; E.I. du Pont de Nemours and Company 1007 Market Street Wilmington, DE 19898, US
Priority Data:
08/848,07201.05.1997US
Title (EN) FRACTURED SEAL RING
(FR) BAGUE D'ETANCHEITE A LIGNE DE FRACTURE
Abstract:
(EN) The present invention provides a seal ring for placement in the space between a radial groove of a cylindrical member and a housing forming a bore in which the cylindrical member is movably positioned, which is free of scoring and has a fracture line through its thickness to form opposing faces. The faces are rough and mesh together such that when the faces are forced into contact, the faces are then interlocked. Furthermore, the seal ring has true roundness to enable the seal ring to seal the space despite presence of the fracture line. The seal ring is made up of a rigid polymer such as a polyimide, polyamide, polyester, polyetheretherketone, polyamideimide, polyetherimide, polyphenylene sulfide, and polybenzimidazole. The seal ring of the present invention is capable of single ring sealing of the space between the bore and the radial groove. The present invention also provides a device for fracturing the seal ring.
(FR) Bague d'étanchéité destinée à être placée dans l'espace formé entre une rainure radiale d'un élément cylindrique et un boîtier présentant un trou dans lequel est placé mobile l'élément cylindrique. Ladite bague est exempte d'éraflures et possède dans son épaisseur une ligne de fracture qui forme des faces opposées. Lesdites faces sont rugueuses et entrent en prise l'une avec l'autre si bien que lorsqu'elles sont poussées de façon à se trouver en contact, elles se trouvent réciproquement bloquées. De plus, ladite bague est effectivement ronde, ce qui lui permet de fermer cet espace de manière étanche en dépit de la présence de la ligne de fracture. Cette bague est composée d'un polymère rigide tel qu'un polyimide, un polyamide, un polyester, une polyétheréthercétone, un polyamideimide, un polyétherimide, un polysulfure de phénylène et un polybenzimidazole. La bague d'étanchéité selon la présente invention est capable à elle seule de fermer l'espace situé entre le trou et la rainure radiale. La présente invention concerne également un dispositif destiné à effectuer une fracture de ladite bague.
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Designated States: CA, CN, JP, SG
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0979366JP2001523324 CN1254404CA2288210CA2597510