US4199154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Labyrinth sealing system
Assignee: Stauffer Chemical Co
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Filing: 1976-07-28
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Granted: 1980-04-22
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Expires: 1996-07-28
Abstract
Abstract A labyrinth sealing system for sealing the inner space of an apparatus defined by two interengaged members, wherein one member is movable with respect to the other. The sealing system includes a first plurality of concentrically spaced ridges formed on one of said members, and a second plurality of concentrically spaced ridges formed on the other said member, the ridges of each said member arranged to engage each other in noncontacting fashion in the spaces between the ridges of the other said member.
Inventors
- 👤 Klaus W. Mueller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:06
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/40; F16J15/44; F16J15/447; F16J15/4476; F16J15/4478; F26; F26B; F26B11/00; F26B11/02; F26B11/024; F27; F27B; F27B7/00; F27B7/20; F27B7/22; F27B7/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A labyrinth sealing system for sealing the inner space of an apparatus defined by two interengaged members wherein one interengaged member is movable with respect to the other interengaged member, said sealing system comprising a first segment projecting from said one interengaged member and formed with a first plurality of concentrically spaced ridges, and a second segment projecting from said other interengaged member and formed with a second plurality of concentrically spaced ridges, wherein the ridges of said first segment are interposed, in noncontacting fashion, in the spaces between the ridges of said second segment, and vice versa, and wherein an annular space is defined between said segments and an annular floating piston ring is disposed in the space between said segments.
Claim 2
Dependent Claim
122 words
A labyrinth sealing system for sealing the inner space of an apparatus defined by two interengaged members wherein one interengaged member is movable with respect to the other interengaged member, said sealing system comprising a first segment projecting from said one interengaged member and formed with a first plurality of concentrically spaced ridges, and a second segment projecting from said other interengaged member and formed with a second plurality of concentrically spaced ridges, wherein the ridges of said first segment are interposed, in noncontacting fashion, in the spaces between the ridges of said second segment, and vice versa, and wherein an annular space is defined between said segments and an annular floating piston ring is disposed in the space between said segments.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-22 | 1983-10-22 | 1984-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-22 | 1987-10-22 | 1988-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-22 | 1991-10-22 | 1992-04-22 | $7700.00 | Window Closed / Lapsed |