Patent US3635309A successfully refreshed from Google Patents.
US3635309A
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US
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Steam or gas damper with axial and radial baffle plates
Assignee: Prvni Brnenska Strojirna Zavody Klementa Gottwalda
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Filing: 1970-09-30
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Granted: 1972-01-18
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Expires: 1990-09-30
Abstract
Abstract A damper for steam or gas comprising an inlet, a first axial flow section, a second radial flow section and an outlet flow section. The axial flow section is formed of a conduit having a plurality of successively larger diameter perforated plates. The radial section is formed of a plurality of perforated coaxial cylinders. The housing surrounds the first and second sections and provides an annular tortuous passage to atmosphere.
Inventors
- 👤 Jan Nemcansky
- 👤 Stanislar Merta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:47
CPC Classifications
F; F01; F01B; F01B31/00; F01B31/16
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
48 words
A steam or gas damper comprising an inlet, an axial flow section comprising a series of parallel perforated plates, a radial flow section comprising a plurality of coaxial perforated cylinders, an outlet section having a tortuous passage formed by a housing coaxially surrounding said axial and radial sections.
Claim 2
Dependent Claim
48 words
A steam or gas damper comprising an inlet, an axial flow section comprising a series of parallel perforated plates, a radial flow section comprising a plurality of coaxial perforated cylinders, an outlet section having a tortuous passage formed by a housing coaxially surrounding said axial and radial sections.
Claim 3
Dependent Claim
34 words
The damper according to claim 1 wherein said axial flow section comprises a funnel member in which said parallel plates are successively of larger diameter, each successive plate having an increased number of holes.
Claim 4
Dependent Claim
19 words
The damper according to claim 2 wherein said plates and said cylinders are respectivEly uniformly spaced from each other.
Claim 5
Dependent Claim
26 words
The damper according to claim 3 wherein said radial flow section is mounted at the end of said axial flow section coaxial with the axis thereof.
Claim 6
Dependent Claim
40 words
The damper according to claim 4 wherein said housing is formed by a pair of coaxial members each having a conical side, said conical sides being opposed to and spaced from each other to form the outlet of said damper.
Claim 7
Dependent Claim
15 words
The damper according to claim 5 wherein said housing defines an upwardly flowing outlet passage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |