Cartridge-type bearing seal for machine tool spindle

Seal for a joint or juncture – Seal between relatively movable parts – Diverse and distinct dynamic seals

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C277S411000, C277S421000, C277S431000

Reexamination Certificate

active

07090220

ABSTRACT:
A cartridge type bearing seal facilitates the prevention of contaminant ingress between a spindle rotor and a spindle housing, particularly in situations where a circumferentially uniform fluid pressure is generated within the annular volume of the spindle housing. The cartridge includes ringlike rotor and stator sections which can be compressed axially to snap fit together, in a manner which enables relative rotation about a common axis. When interconnected, the sections define an inside surface and an outside surface, and a fluid flow path which extends radially outwardly therebetween, and which traverses a collar and tangs construction which enables the snap fit connection. The tangs are arcuate in shape and spaced equidistantly around the axis. The total arcuate space occupied by the tangs is relatively small, compared to the total arcuate space residing between the tangs, and bounded by the two sections adjacent the collar. This structure allows the pressurized purge fluid to flow outwardly from the cartridge during use, to prevent contaminant ingress during operation of the spindle. This construction may be readily adapted to accommodate a spindle of virtually any size or shape, at relatively low cost, and is particularly suitable for retrofitting an existing spindle which has experienced a failed seal.

REFERENCES:
patent: 4415166 (1983-11-01), Beia
patent: 5522601 (1996-06-01), Murphy
patent: 5727095 (1998-03-01), Hoeting
patent: 5980115 (1999-11-01), Hoeting
patent: 6062568 (2000-05-01), Orlowski et al.
patent: 6217219 (2001-04-01), Hoeting
patent: 6367807 (2002-04-01), Rockwood
patent: 6471215 (2002-10-01), Drago et al.
patent: 6485022 (2002-11-01), Fedorovich
patent: 0860637 (2001-12-01), None
Setco,SETCO Airshield, SETCO Sales Company, Publication S-0006-1, 2003.
Setco,SETCO “Universal” AirShield Spindle Seal System, SETCO Sales Company, Publication S-0008, 2002.
Effective Sealing of High Speed Rolling Bearings, Dr. Werner Haas, University of Stuttgart, publication date unknown.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Cartridge-type bearing seal for machine tool spindle 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-type bearing seal for machine tool spindle, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cartridge-type bearing seal for machine tool spindle will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3628227

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.