Patent US3975790A successfully refreshed from Google Patents.
US3975790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning apparatus having ultraviolet lamp fixture
Assignee: Individual
•
Filing: 1975-01-02
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Granted: 1976-08-24
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Expires: 1995-01-02
Abstract
Abstract An ultraviolet lamp fixture used in combination with a conventional, commercial vacuum cleaner for the purpose of purifying the air within a room. The air, after being drawn into the vacuum cleaner and having the dirt particles removed, is exhausted into a U-shaped housing which is carried by the vacuum cleaner and which contains a plurality of longitudinally mounted ultraviolet ray tubes. When the air passes over these tubes, micro-organisms contained in the air are killed by exposure to the ultraviolet radiation emitted from the tubes. The purified air is then returned to the room through an aperture in the housing. The ultraviolet light fixture may be adapted to be used with an existing conventional vacuum cleaner as shown in this specification, or a new combination light fixture-vacuum cleaner may be manufactured.
Inventors
- 👤 Lawrence Patterson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:44
CPC Classifications
A; A47; A47L; A47L7/00; A47L7/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
An ultraviolet light fixture attachment for converting a conventional vacuum cleaner into a germicidal unit, said fixture comprising: an enclosed housing, the opposite ends of said housing providing respectively an air intake aperture and an air exhaust aperture, said housing defining an air passageway between said air intake and exhaust apertures; means for releasably attaching said housing to the exterior of a conventional vacuum cleaner for converting said vacuum cleaner into a germicidal unit; conduit means for channeling the air exhausted from said connected vacuum cleaner into said housing through said housing air intake aperture; and a plurality of ultraviolet ray tubes mounted in said housing in said air passageway between said air intake aperture and said air exhaust aperture whereby airborne microorganisms carried by the air exhausted from said vacuum cleaner may be destroyed.
Claim 2
Dependent Claim
135 words
An ultraviolet light fixture attachment for converting a conventional vacuum cleaner into a germicidal unit, said fixture comprising: an enclosed housing, the opposite ends of said housing providing respectively an air intake aperture and an air exhaust aperture, said housing defining an air passageway between said air intake and exhaust apertures; means for releasably attaching said housing to the exterior of a conventional vacuum cleaner for converting said vacuum cleaner into a germicidal unit; conduit means for channeling the air exhausted from said connected vacuum cleaner into said housing through said housing air intake aperture; and a plurality of ultraviolet ray tubes mounted in said housing in said air passageway between said air intake aperture and said air exhaust aperture whereby airborne microorganisms carried by the air exhausted from said vacuum cleaner may be destroyed.
Claim 3
Dependent Claim
29 words
The ultraviolet lamp fixture defined in claim 1 wherein the ultraviolet ray tubes are mounted longitudinally in the housing resulting in a compact design providing efficient utility and storage.
Claim 4
Dependent Claim
40 words
The ultraviolet light fixture defined in claim 1 wherein said housing is designed in a U shape to provide compatible and compact attachment to a standard existing vacuum cleaner thereby transforming said standard vacuum cleaner into a germicidal cleaning unit.
Claim 5
Dependent Claim
48 words
The ultraviolet light fixture defined in claim 1 further comprising a plurality of doors in said housing, each door, upon being opened, providing manual entry into the housing and permitting unencumbered access to said ultraviolet ray tubes whereby said tubes may be dusted manually and removed, if necessary.
References Cited (Backward Citations)
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US2413704A
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US2648396A
Cited
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US3653185A
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US3700406A
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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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |