Patent US4274477A successfully refreshed from Google Patents.
US4274477A
Expired / Lapsed
US
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Radiator for low-pressure steam heating systems
Assignee: Individual
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Filing: 1980-01-11
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Granted: 1981-06-23
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Expires: 2000-01-11
Abstract
Abstract A radiator for low-pressure steam heating systems comprises at least two chambers, which constitute respective radiator elements. Consecutive elements are interconnected in an upper portion and in a lower portion. The upper portion of each element is connected to a low-pressure steam source. The lower portion of each element is connected to a condensate trap. At least individual ones of the elements are adapted to be shut off from the steam supply.
Inventors
- 👤 Zivomir Nikolic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:15
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/26; F28F9/262; F24; F24D; F24D19/00; F24D19/10; F24D19/1003; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/053; F28D1/05308; F28D21/00; F28D2021/0019; F28D2021/0035; Y; Y10; Y10S; Y10S165/00; Y10S165/092; Y10S165/101; Y10S165/102
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
A radiator for use with low-pressure steam heating systems, comprising at least two series of heating elements, each series having at least one heating element, upper and lower means for consecutively interconnecting said elements in upper and in lower portions thereof, means for independently interconnecting an upper portion of an element of each of said series to a low pressure steam source and for selectively disconnecting at least one of said series from the steam source, condensate drain valve means for maintaining condensate level in said elements higher than the level of said lower means for consecutively interconnecting lower portions of said elements to each other, and means for connecting said lower portions of each of said elements to said condensate drain valve means.
Claim 2
Dependent Claim
124 words
A radiator for use with low-pressure steam heating systems, comprising at least two series of heating elements, each series having at least one heating element, upper and lower means for consecutively interconnecting said elements in upper and in lower portions thereof, means for independently interconnecting an upper portion of an element of each of said series to a low pressure steam source and for selectively disconnecting at least one of said series from the steam source, condensate drain valve means for maintaining condensate level in said elements higher than the level of said lower means for consecutively interconnecting lower portions of said elements to each other, and means for connecting said lower portions of each of said elements to said condensate drain valve means.
Claim 3
Dependent Claim
34 words
A radiator as set forth in claim 1, characterized in that said upper and lower means comprise mutually opposite connecting pipes aligned with each other provided in upper and lower portions of said elements.
Claim 4
Dependent Claim
60 words
A radiator as set forth in claim 1, characterized in that said means for independently interconnecting and for selectively disconnecting comprises a separate pipe connecting an element of each series to a low-pressure steam conduit, and a common directional valve connected to said pipes, said valve being selectively operable to connect at least one selected pipe to the steam conduit.
Claim 5
Dependent Claim
45 words
A radiator as set forth in claim 1, further comprising an orifice plate having a small diameter orifice, and characterized in that the lower portion of at least individual ones of adjacent elements from different ones of said series communicate only through the orifice plate.
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) | 1984-06-22 | 1984-12-22 | 1985-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-22 | 1988-12-22 | 1989-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-22 | 1992-12-22 | 1993-06-23 | $7700.00 | Window Closed / Lapsed |