US5069691A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable filtration unit
Assignee: Abatement Technologies Inc
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Filing: 1990-11-14
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Granted: 1991-12-03
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Expires: 2010-11-14
Abstract
Abstract A portable vacuum and air filtration unit, comprising: a plurality of separately transportable modules and a means for locking the modules together during use, an air inlet located in one of the modules, a debris screen and a means for receiving debris stopped by the screen located in one of the modules, an electrostatic filter located in one of the modules, a bag filter assembly located in one of the modules, a HEPA filter assembly located in one of the modules, and a means for drawing a substantial volume of air through the inlet, screen, electrostatic filter, bag filter assembly and HEPA filter assembly.
Inventors
- 👤 Terrell Travis
- 👤 David Shagott
- 👤 Gary Kruse
- 👤 Daniel Sutherland
- 👤 Blair Harber, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:00
CPC Classifications
A; A47; A47L; A47L5/00; A47L5/12; A47L5/22; A47L5/38
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A portable vacuum and air filtration unit, comprising: a) a plurality of separately transportable modules and a means for locking the modules together during use; b) an air inlet located in one of the modules; c) a debris deflector and a means for receiving debris stopped by the deflector located in one of the modules; d) an electrostatic filter located in one of the modules; e) a bag filter assembly located in one of the modules; f) a HEPA filter assembly located in one of the modules; and g) a means for drawing a substantial volume of air through the inlet, deflector, electrostatic filter, bag filter assembly and HEPA filter assembly.
Claim 2
Dependent Claim
111 words
A portable vacuum and air filtration unit, comprising: a) a plurality of separately transportable modules and a means for locking the modules together during use; b) an air inlet located in one of the modules; c) a debris deflector and a means for receiving debris stopped by the deflector located in one of the modules; d) an electrostatic filter located in one of the modules; e) a bag filter assembly located in one of the modules; f) a HEPA filter assembly located in one of the modules; and g) a means for drawing a substantial volume of air through the inlet, deflector, electrostatic filter, bag filter assembly and HEPA filter assembly.
Claim 3
Dependent Claim
72 words
A portable vacuum and air filtration unit, comprising a plurality of separately transportable modules and a means for locking the modules together during use into a rigidly interconnected chest containing an inlet, a debris deflector, a means for receiving debris stopped by the deflector, an electrostatic filter, a bag filter assembly, a HEPA filter assembly, and a means for drawing air through the inlet, deflector, electrostatic filter, bag filter and HEPA filter.
Claim 4
Dependent Claim
72 words
A portable vacuum and air filtration unit, comprising a plurality of separately transportable modules and a means for locking the modules together during use into a rigidly interconnected chest containing an inlet, a debris deflector, a means for receiving debris stopped by the deflector, an electrostatic filter, a bag filter assembly, a HEPA filter assembly, and a means for drawing air through the inlet, deflector, electrostatic filter, bag filter and HEPA filter.
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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) | 1994-12-02 | 1995-06-03 | 1995-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-02 | 1999-06-03 | 1999-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-02 | 2003-06-03 | 2003-12-03 | $7700.00 | Window Closed / Lapsed |