Seal for a joint or juncture – Seal between relatively movable parts – Circumferential contact seal for other than piston
Patent
2000-03-15
2000-12-19
Dayoan, B.
Seal for a joint or juncture
Seal between relatively movable parts
Circumferential contact seal for other than piston
277551, 277572, F16J 1518, F16J 1532
Patent
active
061618381
ABSTRACT:
A cartridge seal stack utilizes a plurality of rotary cartridge seals each including a cold flowable plastic ring having a body for sealably engaging a housing bore and a lip for sealably engaging a shaft rotating within the housing bore. A spring is provided and disposed between the body and the lip for biasing the lip against the shaft and a separable metal retainer is provided for fixing the plastic ring within the housing bore and around the shaft. The separable metal retainer includes a surface of revolution with a rear portion having a radius suitable for press fitting into the housing bore and a front portion of lesser radius ending the ring. An internal groove is provided in the body of the plastic ring for engaging the ring in order to latch the plastic ring and metal retainer together. A spring portion connecting the retainer rear portion and the ring is provided for controlling residual stress in a radial direction within the plastic ring and preventing shrinkage of the plastic ring toward the shaft.
REFERENCES:
patent: 5269536 (1993-12-01), Matsushima et al.
patent: 5299811 (1994-04-01), Kershaw
patent: 5813676 (1998-09-01), Antonini et al.
patent: 5855375 (1999-01-01), Wilcox et al.
patent: 5979904 (1999-11-01), Balsells
patent: 5984316 (1999-11-01), Balsells
patent: 6076645 (2000-06-01), Winkelmann et al.
Bal Seal Engineering, Co, Inc.
Beres John L.
Dayoan B.
Hackler Walter A.
LandOfFree
Cartridge seal stack does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cartridge seal stack, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cartridge seal stack will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-265312