Patent US1915489A successfully refreshed from Google Patents.
Patent US4909815A successfully refreshed from Google Patents.
US4909815A
Expired / Lapsed
US
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Mobile air cleaning apparatus
Assignee: International Air Filter Inc
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Filing: 1988-10-24
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Granted: 1990-03-20
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Expires: 2008-10-24
Abstract
Abstract Mobile air cleaning apparatus comprising a base, a cabinet which is mounted on and extends upwardly from one end of the base, and a hood which is supported by the upper end of the cabinet and extends over the base. A circular air flow path is formed which includes the open space between the hood and the base, and ducts in the base, the cabinet and the hood. In the air flow path are particle filters, an activated carbon filter, and a blower. The base is mounted on wheels so that the entire apparatus is readily movable.
Inventors
- 👤 Richard R. Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:25
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0446; B01D46/00; B01D46/10; B01D46/12; B01D53/0454; B05; B05B; B05B16/00; B05B16/60; B05B16/80; B08; B08B; B08B15/00; B08B15/02; B60; B60S; B60S3/00; B60S3/002; B01D2253/00; B01D2253/10; B01D2253/102; B01D2257/00; B01D2257/40; B01D2257/408; B01D2257/93; B01D2258/00; B01D2258/02; B01D2258/0258; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40084; B01D2259/45; B01D2259/455
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
191 words
Mobile air cleaning apparatus comprising a substantially flat elongated base, a cabinet mounted on one end of said base and supported by said base, an elongated hood having one end thereof mounted on the upper end of said cabinet and supported by said cabinet, the other end of said hood extending over said base, the other end of said base having an air intake opening formed in the upper side thereof and said other end of said hood having an air outlet opening in the bottom side thereof, connected air flow passages in said base, said cabinet and said hood, said air flow passages being connected to said air intake and air outlet openings, a blower mounted in said air flow passages for moving air from said air intake opening, through said air flow passaees and out of said air outlet opening, at least one particle filter and at least one charcoal filter mounted in said air flow passages upstream from said blower, and wheel means connected to said base for movably supporting said apparatus on a support surface, whereby said apparatus may be readily moved from one location to another.
Claim 2
Dependent Claim
191 words
Mobile air cleaning apparatus comprising a substantially flat elongated base, a cabinet mounted on one end of said base and supported by said base, an elongated hood having one end thereof mounted on the upper end of said cabinet and supported by said cabinet, the other end of said hood extending over said base, the other end of said base having an air intake opening formed in the upper side thereof and said other end of said hood having an air outlet opening in the bottom side thereof, connected air flow passages in said base, said cabinet and said hood, said air flow passages being connected to said air intake and air outlet openings, a blower mounted in said air flow passages for moving air from said air intake opening, through said air flow passaees and out of said air outlet opening, at least one particle filter and at least one charcoal filter mounted in said air flow passages upstream from said blower, and wheel means connected to said base for movably supporting said apparatus on a support surface, whereby said apparatus may be readily moved from one location to another.
Claim 3
Dependent Claim
40 words
Apparatus as set forth in claim 1, wherein said base has a width which is less than the distance between the wheels of a motor vehicle and a vertical height which is less than the clearance underneath a motor vehicle.
Claim 4
Dependent Claim
41 words
Apparatus as set forth in claim 1, wherein the lengths of said base and said hood from said cabinet to said other end is such that said other ends are positionable below and above the center portion of a motor vehicle.
Claim 5
Dependent Claim
29 words
Apparatus as set forth in claim 1, and further including a coarse particle filter mounted in said air intake opening, and a diffuser-filter mounted in said air outlet opening.
Claim 6
Dependent Claim
26 words
Apparatus as set forth in claim 1, wherein said other end of said hood has a greater lateral width than said other end of said base.
Claim 7
Dependent Claim
201 words
Air cleaning apparatus comprising: (a) a base including wheels for supporting said base on the floor, said base being relatively low and sized to be moved under a vehicle, an air intake opening in the upper side of said base and a first air flow passage in said base, and a coarse filter mounted in said air intake opening; (b) a cabinet mounted on and extending upwardly from said base, said cabinet having a second air flow passage therein which is connected to receive air from said first air flow passage, an activated charcoal filter and a high efficiency filter mounted in said second air flow passage, and a blower mounted in said second air flow passage for moving air from said first to said second air flow passage and through said coarse, charcoal and high efficiency filters; and (c) a hood attached to and extending laterally from the upper side of said cabinet and over said base, said hood having a third air flow passage therein connected to said second air flow passage, an air outlet opening formed in te bottom side of said hood over said air intake opening, and a diffuser filter mounted in said air outlet opening.
Claim 8
Dependent Claim
201 words
Air cleaning apparatus comprising: (a) a base including wheels for supporting said base on the floor, said base being relatively low and sized to be moved under a vehicle, an air intake opening in the upper side of said base and a first air flow passage in said base, and a coarse filter mounted in said air intake opening; (b) a cabinet mounted on and extending upwardly from said base, said cabinet having a second air flow passage therein which is connected to receive air from said first air flow passage, an activated charcoal filter and a high efficiency filter mounted in said second air flow passage, and a blower mounted in said second air flow passage for moving air from said first to said second air flow passage and through said coarse, charcoal and high efficiency filters; and (c) a hood attached to and extending laterally from the upper side of said cabinet and over said base, said hood having a third air flow passage therein connected to said second air flow passage, an air outlet opening formed in te bottom side of said hood over said air intake opening, and a diffuser filter mounted in said air outlet opening.
Claim 9
Dependent Claim
20 words
Apparatus as set forth in claim 6, wherein said blower is mounted downstream from said charcoal and high efficiency filters.
Claim 10
Dependent Claim
19 words
Apparatus sa set forth in claim 7, wherein said high efficiency filter is mounted downstream from said charcoal filter.
Claim 11
Dependent Claim
25 words
Apparatus as set forth in claim 6, and further including a medium filter mounted upstream from said blower, said high efficiency and said charcoal filters.
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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) | 1993-03-19 | 1993-09-18 | 1994-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-19 | 1997-09-18 | 1998-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-19 | 2001-09-18 | 2002-03-20 | $7700.00 | Window Closed / Lapsed |