Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO1979000919) TAPERED SEAL FOR ENGINES OR THE LIKE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000919 International Application No.: PCT/US1979/000109
Publication Date: 15.11.1979 International Filing Date: 26.02.1979
IPC:
F01C 19/04 (2006.01) ,F16J 9/06 (2006.01) ,F16J 9/20 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
C
ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
19
Sealing arrangements in rotary-piston machines or engines
02
Radially-movable sealings for working fluids
04
of rigid material
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
06
using separate springs expanding the rings; Springs therefor
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
20
Rings with special cross-section; Oil-scraping rings
Applicants:
Inventors:
Priority Data:
89555912.04.1978US
Title (EN) TAPERED SEAL FOR ENGINES OR THE LIKE
(FR) JOINT CONIQUE POUR MOTEURS OU AUTRES
Abstract:
(EN) A seal (44, 46, 116) for a mechanism such as an engine compressor, expander, pump, or the like. The mechanism includes a housing (10, 100) defining an operating chamber (12, 102) and a piston (30, 104) is within the housing and mounted for movement therein. The piston has a first surface (36, 106) within the chamber adapted to be subjected to gas at elevated pressure and a second, adjacent surface (38, 108) at least part of which is not subjected to gas at elevated pressure. A seal receiving groove (40, 42, 118) is disposed in the piston second surface adjacent the part not subjected to high pressure and has opposed side walls (60, 62, 120, 122) one being near the first surface and the other (62, 122) being near the part (60, 120) of the second surface not subject to high pressure. The latter side wall diverges away from the first mentioned side wall and a seal is disposed within the groove and has a sealing surface sealingly engaging the housing. An opposed surface (68, 130) is on the seal and located within the groove and a surface interconnects the sealing surface and the opposed surface and faces the last mentioned side wall (122) and is adapted to substantially abut the same to seal against it. The seal is narrower at the opposed surface than at the sealing surface and further is sized to be somewhat laterally shiftable within the groove. As a consequence, desired gas energization characteristics can be provided.
(FR) Joint (44, 46, 116) pour un mecanisme tel qu"un moteur, un compresseur, un dispositif d"expansion, une pompe, ou autres. Le mecanisme comprend un logement (10, 100) definissant une chambre de fonctionnement (12, 102), et un piston (30, 104) monte dans celle-ci peut se deplacer. Le piston possede une premiere surface (36, 106) dans la chambre qui est soumise a un gaz a pression elevee, et une seconde surface adjacente (38, 108) dont au moins une partie n"est pas soumise au gaz de haute pression. Une rainure de reception du joint (40, 42, 118) est amenagee dans la seconde surface du piston, adjacente a la partie qui n"est pas soumise a la haute pression, et possede des parois laterales (60, 62, 120, 122), l"une se trouvant a proximite de la premiere surface et l"autre (62, 122) etant pres de la partie (60, 120) de la seconde surface non soumise a la haute pression. La seconde paroi laterale diverge de la paroi laterale mentionnee en premier et un joint place dans la rainure possede une surface d"etancheite s"engageant dans le logement de maniere etanche. Une surface opposee (68, 130) sur le joint est situee dans la rainure et une surface relie la surface d"etancheite et la surface opposee, regarde la paroi laterale mentionnee en dernier (122) et est adaptee pour buter contre celle-ci pour assurer l"etancheite. Le joint est plus etroit du cote de la surface opposee que du cote de la surface d"etancheite et de plus il est dimensionne pour bouger lateralement dans la rainure. En consequence, on obtient les caracteristiques energetiques voulues.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)