Patent US4255169A successfully refreshed from Google Patents.
US4255169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of conservation in processing industrial air
Assignee: Wheelabrator Corp
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Filing: 1979-06-22
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Granted: 1981-03-10
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Expires: 1999-06-22
Abstract
Abstract A method is disclosed for recycling industrial air. Air contaminated by particulates is removed from the area of machinery, transported to dust collectors, and filtered. A small portion of the filtered air is discharged to the outside atmosphere while a substantial portion is recycled to the area of the machinery. Significant savings of energy are realized while less particulates are exhausted with the air into the atmosphere as contaminants.
Inventors
- 👤 Raymond M. Leliaert
- 👤 Robert N. Lindner
- 👤 James K. Davidson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:47
CPC Classifications
B; B08; B08B; B08B15/00; B08B15/002; F; F24; F24F; F24F8/00; F24F8/10; F24F8/108; Y; Y10; Y10S; Y10S55/00; Y10S55/18; Y10S55/29
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
148 words
A method of conserving energy invested in processed air contaminated with dust or dirt generated within a cabinet having a door and doorway for access to the interior of the cabinet comprising the steps of: (a) exhausting the contaminated air from the cabinet to a dust collecting means; (b) removing a substantial part of the contaminating dust or dirt fron the contaminated air to provide a cleansed air by processing the contaminated air through dust collecting means; (c) venting a relatively small portion of the cleansed air to the atmosphere; (d) returning a substantial portion of the cleansed air to the cabinet when the door is closed; (e) returning a substantial portion of the cleansed air to the doorway when the door is open; and (f) introducing an amount of air from the atmosphere adjacent the cabinet into the cabinet corresponding to the amount vented into the atmosphere.
Claim 2
Independent Claim
148 words
A method of conserving energy invested in processed air contaminated with dust or dirt generated within a cabinet having a door and doorway for access to the interior of the cabinet comprising the steps of: (a) exhausting the contaminated air from the cabinet to a dust collecting means; (b) removing a substantial part of the contaminating dust or dirt fron the contaminated air to provide a cleansed air by processing the contaminated air through dust collecting means; (c) venting a relatively small portion of the cleansed air to the atmosphere; (d) returning a substantial portion of the cleansed air to the cabinet when the door is closed; (e) returning a substantial portion of the cleansed air to the doorway when the door is open; and (f) introducing an amount of air from the atmosphere adjacent the cabinet into the cabinet corresponding to the amount vented into the atmosphere.
Claim 3
Dependent Claim
14 words
The method of claim 1 wherein the steps take place in a continuous fashion.
Claim 4
Independent Claim
126 words
A method of conserving energy invested in processed air contaminated with dust or dirt generated within a cabinet having a vestibule leading into the cabinet for access into the interior of the cabinet comprising the steps of (a) exhausting the contaminated air from the cabinet to a dust collecting means; (b) removing a substantial part of the contaminated dust or dirt fron the contaminated air to provide a cleansed air by processing the contaminated air through the dust collecting means; (c) venting a relatively small portion of the cleansed air to the atmosphere; (d) returning a substantial portion of the cleansed air to the vestibule; and (e) introducing an amount of air from the atmosphere into the vestibule corresponding to the amount vented to the atmosphere.
Claim 5
Independent Claim
126 words
A method of conserving energy invested in processed air contaminated with dust or dirt generated within a cabinet having a vestibule leading into the cabinet for access into the interior of the cabinet comprising the steps of (a) exhausting the contaminated air from the cabinet to a dust collecting means; (b) removing a substantial part of the contaminated dust or dirt fron the contaminated air to provide a cleansed air by processing the contaminated air through the dust collecting means; (c) venting a relatively small portion of the cleansed air to the atmosphere; (d) returning a substantial portion of the cleansed air to the vestibule; and (e) introducing an amount of air from the atmosphere into the vestibule corresponding to the amount vented to the atmosphere.
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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) | 1984-03-09 | 1984-09-08 | 1985-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-09 | 1988-09-08 | 1989-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-09 | 1992-09-08 | 1993-03-10 | $7700.00 | Window Closed / Lapsed |