EP 0670977 A4 19951220 - FACE SEAL WITH DOUBLE GROOVE ARRANGEMENT.
Title (en)
FACE SEAL WITH DOUBLE GROOVE ARRANGEMENT.
Title (de)
GLEITRINGDICHTUNG MIT DOPPELNUTZANORDNUNG.
Title (fr)
JOINT TOURNANT A CONFIGURATION RAINUREE DOUBLE.
Publication
Application
Priority
- US 9308289 W 19930901
- US 11224093 A 19930826
- US 11218093 A 19930826
Abstract (en)
[origin: WO9506212A1] A non-contacting grooved face seal for a shaft rotating at high speed with a combination of two groove patterns (34, 44) on one of the two sealing faces of mating seal rings; one pattern being relatively deep angled grooves (34), and the other pattern being relatively shallow grooves (44). The relatively deep groove pattern (34) is optimized for hydrodynamic operation and on shaft rotation pumps the sealed fluid between the sealing faces to set the running clearance. The relatively shallow pattern (44) is designed to hydrostatically prevent a friction lock of the sealing faces when the shaft is at or near to a stationary condition.
IPC 1-7
IPC 8 full level
F16J 15/34 (2006.01)
CPC (source: EP)
F16J 15/3412 (2013.01)
Citation (search report)
- [A] US 5209500 A
- See references of WO 9506212A1
Designated contracting state (EPC)
DE FR GB IT NL SE
DOCDB simple family (publication)
WO 9506212 A1 19950302; CA 2147739 A1 19950302; EP 0670977 A1 19950913; EP 0670977 A4 19951220; JP H08502809 A 19960326
DOCDB simple family (application)
US 9308289 W 19930901; CA 2147739 A 19930901; EP 93921316 A 19930901; JP 50753495 A 19930901