Patent US3584885A successfully refreshed from Google Patents.
US3584885A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for rotary vessels such as kilns
Assignee: GEA Group AG
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Filing: 1967-07-10
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Granted: 1971-06-15
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Expires: 1987-07-10
Abstract
Abstract A rotary kiln is sealed against the infiltration of air and the escape of gases and dust by means of a slip ring seal. One ring is mounted on the housing and the other is mounted about the periphery of the rotating kiln. The two are urged into firm sliding engagement by means of a series of compressed aircylinders acting on points about the edge of the stationary ring.
Inventors
- 👤 Johann Oberndorfer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:05
CPC Classifications
F; F16; F16J; F16J13/00; F16J13/02; Y; Y10; Y10S; Y10S277/00; Y10S277/903
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
In apparatus having a large rotating circular vessel mating with a stationary mounting member, the improvement comprising two mating ring seals, one being stationary and mounted on said mounting member and the other being mounted about the periphery of said vessel and adapted for sliding engagement with each other, and pneumatic cylinders about the periphery of the stationary seals and acting against said mounting members to maintain said seals in firm but sliding engagement, said stationary ring seal being pivotally mounted at points on a collar about the end of said vessel and mounted on said mounting member, the pivoted mounting permitting limited movement of the seal along the axis of the vessel.
Claim 2
Dependent Claim
113 words
In apparatus having a large rotating circular vessel mating with a stationary mounting member, the improvement comprising two mating ring seals, one being stationary and mounted on said mounting member and the other being mounted about the periphery of said vessel and adapted for sliding engagement with each other, and pneumatic cylinders about the periphery of the stationary seals and acting against said mounting members to maintain said seals in firm but sliding engagement, said stationary ring seal being pivotally mounted at points on a collar about the end of said vessel and mounted on said mounting member, the pivoted mounting permitting limited movement of the seal along the axis of the vessel.
References Cited (Backward Citations)
US2906565A
Cited
US2992842A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |