Media isolation seal system
OwnerJohn W. Schroederinventor
Life of this patent
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Abstract
A media isolation seal system for sealing between a housing and a shaft to prevent passage of pressurized abrasive media includes a floating seal disposed between the housing and the shaft for contact the pressurized abrasive media and preventing passage other media thereby. A rear seal disposed between the housing and the shaft at a spaced apart distance from the floating seal as provided along with a lubricating fluid disposed between the floating seal and the rear seal for transferring pressure to the rear seal and enabling the floating seal to have a zero differential there across.
Claims26
A media isolation seal system for sealing between a housing and a shaft to prevent passage of pressurized abrasive media, the system comprising:
- a floating seal, disposable between the housing and the shaft, for contacting the pressurized abrasive media and preventing passage of the media thereby;
- a rear seal disposable between the housing and the shaft at a spaced apart distance from said floating seal;
- and
- a lubricating fluid disposed between said floating seal and said rear seal for transferring pressure to said rear seal and enabling said floating seal to have zero differential pressure thereacross.
A media isolation seal system for sealing between a housing and a shaft to prevent passage of pressurized abrasive media, the system comprising:
- a floating seal disposed between the housing and the shaft, for contacting the pressurized media and preventing passage of the media thereby;
- a rear seal disposed between the housing and the shaft;
- a cartridge for supporting said floating seal and said rear seal in a spaced apart relationship;
- and
- a lubricating fluid disposed between said floating seal and said rear seal for transferring pressure to said rear seal and enabling said floating seal to have zero differential pressure thereacross.
26 The seal system according to claim 16 further comprising a vent disposed in said cartridge for relieving pressure between.
Dependencies are inferred from the claim text.