Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1991-10-11
1993-02-02
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264263, 264266, 264268, 425DIG47, B29C 4318
Patent
active
051836173
ABSTRACT:
A method of manufacturing a hermetic sealing apparatus for two members rotating relative to each other includes placing an annular metal backup ring having an L-shaped cross section in a mold with a radially inward flange portion of the annular metal backup ring having a plurality of circumferentially spaced holes. The mold has a central core and the outer peripheral surface of the central core is provided with a spiral groove. A conical shaped PTFE resin material sheet for forming a second annular seal ring is placed in the mold. A rubber-like resilient material for forming a first annular seal ring is placed in the mold and subjected to pressure. The molding pressure deforms the second annular seal ring material so that it protrudes into the holes of the flange portion of the annular metal backup ring. This firmly secures and fixes the second annular seal ring between the first seal ring and the annular metal backup ring.
REFERENCES:
patent: 3493645 (1970-02-01), Sanderson et al.
patent: 4038359 (1977-07-01), Pendleton
patent: 4171561 (1979-10-01), Bainard
patent: 4406847 (1983-09-01), O'Neal et al.
patent: 4464322 (1984-08-01), Butler
patent: 4723350 (1988-02-01), Kobayashi et al.
patent: 5082612 (1992-01-01), Butler et al.
patent: 5104603 (1992-04-01), Saitoh
Eastley Brian J.
NOK Corporation
Silbaugh Jan H.
LandOfFree
Method of manufacturing a hermetic sealing apparatus for sealing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of manufacturing a hermetic sealing apparatus for sealing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of manufacturing a hermetic sealing apparatus for sealing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-5867