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1. (WO1991018228) MECHANICAL FACE SEALS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018228 International Application No.: PCT/GB1991/000796
Publication Date: 28.11.1991 International Filing Date: 21.05.1991
Chapter 2 Demand Filed: 06.11.1991
IPC:
B23K 31/02 (2006.01) ,F16J 15/04 (2006.01) ,F16J 15/36 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
31
Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K1/-B23K28/193
02
relating to soldering or welding
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
15
Sealings
02
between relatively-stationary surfaces
04
without packing between the surfaces, e.g. with ground surfaces, with cutting edge
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
15
Sealings
16
between relatively-moving surfaces
34
with slip-ring pressed against a more or less radial face on one member
36
connected by a diaphragm to the other member
Applicants:
FLEXIBOX LIMITED [GB/GB]; Nash Road Trafford Park Manchester M17 1SS, GB (AllExceptUS)
CARLISLE, Peter, Derek [GB/GB]; GB (UsOnly)
CADDEN, Derek, Edmund [GB/GB]; GB (UsOnly)
Inventors:
CARLISLE, Peter, Derek; GB
CADDEN, Derek, Edmund; GB
Agent:
MASSEY, Alexander; Marks & Clerk Sussex House 83-85 Mosley Street Manchester M2 3LG, GB
Priority Data:
9011388.722.05.1990GB
Title (EN) MECHANICAL FACE SEALS
(FR) GARNITURE MECANIQUE ETANCHE
Abstract:
(EN) A metal bellows for use in a mechanical seal is rolled from a flat sheet (10) 'INCONEL' 625 for example. It is seam welded along an axial diagonal line (12) and its corrugations or convolutions (15, 16) have inner and outer crowns (20A, 20B) of identical radii. The end corrugation or convolution at each end of the bellows (20) is axially compressed to provide an annular double-thickness bearing and support surface (14) against which an end ring (21, 22) is located in face-to-face connection, the bellows ends and the end rings being welded together at the outer diameter of the end rings (21, 22). An axially short and mechanically strong bellows results from this construction.
(FR) Un soufflet métallique utilisé dans une garniture mécanique étanche est roulé à partir d'une feuille plate (10), par exemple l''INCONEL' 625. Le soufflet est soudé à la molette le long d'une ligne axiale et diagonale (12) et ses ondulations ou spires (15, 16) comportent des sommets internes et externes (20A, 20B) de rayons identiques. L'ondulation ou la spire terminale de chaque extrémité du soufflet (20) est axialement comprimée pour fournir une surface de fatigue et de support (14) annulaire et à double épaisseur, contre laquelle une bague terminale (21, 22) est placée en une connexion face à face, les extrémités du soufflet et les bagues terminales étant soudées ensemble sur le diamètre externe des bagues terminales (21, 22). Un soufflet axialement court et présentant une bonne résistance mécanique en résulte.
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, PL, RO, SD, SE, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0530266US5375854DE000069111444GB2261835AU1991078828