US3999911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for collecting industrial vapors and particulate matter
Assignee: Achilles USA Inc
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Filing: 1975-08-06
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Granted: 1976-12-28
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Expires: 1995-08-06
Abstract
Abstract The vapor and particulate matter emitting equipment is enclosed within walls of an electrostatically charged clear plastic sheet material. The enclosures are connected at their tops to hoods which are connected to ducting leading to an exhaust fan. The vapors are contained within the enclosures until they can be evacuated by the fan. The particulate matter is attracted to the electrostatically charged sheet material.
Inventors
- 👤 Shigeo Matsubara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:59
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/80; B29B7/84; B08; B08B; B08B15/00; B08B15/02; B08B6/00; B29C; B29C43/00; B29C43/22; B29C43/24
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
66 words
In apparatus for manufacturing film or sheet plastic products from plastic resins which are heated and mixed in mixing equipment and are then conveyed by conveyor means to and through a calendaring machine, means for effectively collecting and removing by-products vapors and particulate matter comprising: hood means positioned over at least a portion of the heating and mixing equipment, the conveyor means and the calendaring machine;
Claim 2
Dependent Claim
66 words
In apparatus for manufacturing film or sheet plastic products from plastic resins which are heated and mixed in mixing equipment and are then conveyed by conveyor means to and through a calendaring machine, means for effectively collecting and removing by-products vapors and particulate matter comprising: hood means positioned over at least a portion of the heating and mixing equipment, the conveyor means and the calendaring machine;
Claim 3
Dependent Claim
36 words
Apparatus according to claim 1, wherein the walls of sheet material are constructed in sections so that a section can be replaced independently of the other sections once it reaches its capacity of collected particulate matter.
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) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |