US4705138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam trap muffler
Assignee: Dow Chemical Co
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Filing: 1985-12-24
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Granted: 1987-11-10
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Expires: 2005-12-24
Abstract
Abstract Disclosed is a simple steam trap muffler. It is comprised of two comentric pipes which are both welded at their first ends to the exhaust pipe of a steam trap. The steam and condensate flows into the inner pipe from the exhaust pipe. The inner pipe has its opposite end capped so that the steam and condensate can not flow to the atmosphere through this inner pipe. However, the inner pipe does have orifices in its circumferential side through which this fluid can flow into the annular space between the first and second concentric pipes. There is no cap on the second end of the outer pipe. Thus the fluid flows along this annular space and out of the muffler through this open end of the outer pipe.
Inventors
- 👤 Norman W. Reese
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:10
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/005; F01N1/00; F01N1/08; F01N2450/00; F01N2450/22; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
347 words
A steam trap muffler adapted for connecting to an exhaust end of an exhaust conduit of a steam trap comprising: A. a first expansion conduit to allow the expansion of steam and the expansion of condensate flashing to steam as the steam and condensate surge from the exhaust end of the exhaust conduit of the steam trap; said first expansion conduit having a first end capable of being fixedly connected to the exhaust end of the exhaust conduit of the steam trap and a second end being at least substantially capped; said first expansion conduit having a substantially uniformly sized interior cross-sectional area along its length with said cross-section area being from about three to about nine times greater than the interior cross-sectional area of the exhaust conduit of the steam trap; said first expansion conduit having orifices through it to allow condensate and steam to flow out of said first expansion conduit; said orifices being suficient in number and size so that the sum of the area of their individual openings is from about three to about nine times the area of the interior of the cross-section of said first expansion conduit; and B. a second expansion conduit having a first end and a second end; which has an interior cross-sectional area which is from about three to about nine times as large as the interior cross-section area of the first expansion conduit; which is substantially annularly disposed around the first expansion conduit; said first end of the second expansion conduit sealably and fixedly connected to the first end of the first expansion conduit; said second end of the second expansion conduit open to the surrounding atmosphere so as to be capable of allowing the surges of steam and condensate which intermittently escape from steam traps to escape to the atmosphere in a much less noiseful fashion so as not to frighten personnel in the immediate vicinity of the steam trap and also to essentially prevent erosion of the ground which occurs because most steam trap exhaust pipes are directed toward the ground to protect personnel.
Claim 2
Dependent Claim
347 words
A steam trap muffler adapted for connecting to an exhaust end of an exhaust conduit of a steam trap comprising: A. a first expansion conduit to allow the expansion of steam and the expansion of condensate flashing to steam as the steam and condensate surge from the exhaust end of the exhaust conduit of the steam trap; said first expansion conduit having a first end capable of being fixedly connected to the exhaust end of the exhaust conduit of the steam trap and a second end being at least substantially capped; said first expansion conduit having a substantially uniformly sized interior cross-sectional area along its length with said cross-section area being from about three to about nine times greater than the interior cross-sectional area of the exhaust conduit of the steam trap; said first expansion conduit having orifices through it to allow condensate and steam to flow out of said first expansion conduit; said orifices being suficient in number and size so that the sum of the area of their individual openings is from about three to about nine times the area of the interior of the cross-section of said first expansion conduit; and B. a second expansion conduit having a first end and a second end; which has an interior cross-sectional area which is from about three to about nine times as large as the interior cross-section area of the first expansion conduit; which is substantially annularly disposed around the first expansion conduit; said first end of the second expansion conduit sealably and fixedly connected to the first end of the first expansion conduit; said second end of the second expansion conduit open to the surrounding atmosphere so as to be capable of allowing the surges of steam and condensate which intermittently escape from steam traps to escape to the atmosphere in a much less noiseful fashion so as not to frighten personnel in the immediate vicinity of the steam trap and also to essentially prevent erosion of the ground which occurs because most steam trap exhaust pipes are directed toward the ground to protect personnel.
Claim 3
Dependent Claim
32 words
The steam trap mufflers of claim 1 wherein the capped end of the first expansion conduit is totally closed off so that no steam or condensate can escape through said capped end.
Claim 4
Dependent Claim
33 words
The steam trap muffler of claim 1 wherein the first end of the first expansion conduit is also capable of being sealably connected to the exhaust end of the steam trap's exhaust conduit.
Claim 5
Dependent Claim
21 words
The steam trap muffler of claim 1 wherein said muffler is actually attached to the exhaust conduit of the steam trap.
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) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |