US4236902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular air purifying device
Assignee: Individual
•
Filing: 1978-11-15
•
Granted: 1980-12-02
•
Expires: 1998-11-15
Abstract
Abstract A portable air filter and absorber device for removing impurities such as gases and finely divided solids from the atmosphere includes a sectionalized cylindrical housing containing a blower mechanism operatively connected to a motor driving section. An activated carbon section is detachably mounted adjacent the blower section for removing odors and noxious gases from the atmosphere and attached in series to the activated carbon section is a fibrous section which acts to filter particulate material from the air prior to its entry passage into the carbon granule section. The sectionalized cylindrical housing includes a plurality of inner annular grooves which are adapted to matingly engage projecting end portions of the carbon granular section and the fibrous filter section to permit predetermined mounting of these sections in series to the housing.
Inventors
- 👤 Roy A. Fricke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:40
CPC Classifications
B; B01; B01D; B01D46/00; B01D46/52; B01D46/521; B01D46/10; B01D46/12; B01D53/00; B01D53/02; B01D2267/00; B01D2267/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
281 words
A modular air purifying device including, in combination: blower means operatively disposed within a blower casing; motor drive means operatively connected to said blower means for rotatably driving said blower means; air neutralizer section means comprising an air neutralizer casing therein containing a body of granules of chemical neutralizing compound for removing and absorbing undesired irritants, gases, vapors, and airborne solids from said air as it passes therethrough, said air neutralizer section means operably positioned adjacent said blower means in axial alignment therewith, air filter section means operably positioned adjacent said air neutralizer section means and comprising a coil of folded fibrous filter for filtering particulate material from said air as it passes therethrough, means to compress said granules by applying an axial force on said granules therewithin in compact aggregation and to preclude loose spots, pockets and voids from occurring within said body of granular material, and to thereby more effectively expose said drawn air to an optimal amount of said granules to in turn more effectively absorb said undesired irritants, gases, vapors and airborne solids from said air as it passes therethrough while simultaneously preventing said granules from noisily moving within said neutralizer section upon activation of said motor drive and blower means, both said air neutralizer section means and said air filter section means each being removably mounted for engagement with one another as well as interchangeable engagement with said blower means separately, such that upon activation of said motor drive means, said blower means rotates to draw air into and through first said filter section means and in turn said air neutralizer section means to provide purified air which is in turn exhausted from said blower means.
Claim 2
Dependent Claim
281 words
A modular air purifying device including, in combination: blower means operatively disposed within a blower casing; motor drive means operatively connected to said blower means for rotatably driving said blower means; air neutralizer section means comprising an air neutralizer casing therein containing a body of granules of chemical neutralizing compound for removing and absorbing undesired irritants, gases, vapors, and airborne solids from said air as it passes therethrough, said air neutralizer section means operably positioned adjacent said blower means in axial alignment therewith, air filter section means operably positioned adjacent said air neutralizer section means and comprising a coil of folded fibrous filter for filtering particulate material from said air as it passes therethrough, means to compress said granules by applying an axial force on said granules therewithin in compact aggregation and to preclude loose spots, pockets and voids from occurring within said body of granular material, and to thereby more effectively expose said drawn air to an optimal amount of said granules to in turn more effectively absorb said undesired irritants, gases, vapors and airborne solids from said air as it passes therethrough while simultaneously preventing said granules from noisily moving within said neutralizer section upon activation of said motor drive and blower means, both said air neutralizer section means and said air filter section means each being removably mounted for engagement with one another as well as interchangeable engagement with said blower means separately, such that upon activation of said motor drive means, said blower means rotates to draw air into and through first said filter section means and in turn said air neutralizer section means to provide purified air which is in turn exhausted from said blower means.
Claim 3
Dependent Claim
42 words
The modular air purifying device according to claim 1 in which said neutralizing compound in said air neutralizing section means comprises granules of activated carbon for chemical removal of said undesired irritants, gases, vapors, and airborne solids from said air passing therethrough.
Claim 4
Dependent Claim
69 words
The modular air purifying device according to claim 10 in which said neutralizer section means further comprises a plurality of non-porous inner annular flanges integrally emanating from said neutralizer casing for more effectively routing the passage of air through said neutralizer section means as to reroute said passing air repeatedly back into said body of granules thereby increasing the absorption and purifying efficiency of said contained body of granules.
Claim 5
Dependent Claim
51 words
The modular air purifying device according to claim 1 in which said blower means includes an impeller, said blower casing further including volute shroud means operably positioned about said blower means; said purified air being exhausted from said modular air purifying device from said blower, through said blower casing and shroud.
Claim 6
Dependent Claim
37 words
The modular air purifying device according to claim 4 wherein said shroud further includes scented member means positioned in the path of said exhausted air for the purpose of imparting a scent to the exhausted filtered air.
Claim 7
Dependent Claim
60 words
The modular air purifying device according to claim 1 in which said means for removably attaching said filter section means to said air neutralizer section means, said blower means, and in turn said motor drive means comprises equivalently threaded coupling means enabling said interchangeability between said air filter section means and said air neutralizer section means with said blower means.
Claim 8
Dependent Claim
61 words
The modular air purifying device according to claim 1 in which said means for removably attaching said filter section means to said air neutralizer section means, said blower means, and in turn said motor drive means comprises equivalent bayonet-type coupling means permitting the aforesaid interchangeability between said air filter section means and said air neutralizer section means with said blower means.
Claim 9
Dependent Claim
110 words
The modular air purifying device according to claim 1 in which said compressive means includes a peripheral ring member interposed between said air neutralizing section means and said air filter section means, said peripheral ring member operably interposed between said air neutralizing section means and air filter section through threaded coupling therebetween said sections; said axial applied force transmitted against said body of granules arising out of the force and extent to which said air neutralizer section means and air filter section means are threadedly coupled thereby permitting said applied force to be varied as a function of the degree to which said sections are threadedly coupled to one another.
Claim 10
Dependent Claim
52 words
The modular air purifying device of claim 8 in which said air neutralizer section means and air filter section means are threadedly coupled by a bayonet-type coupling device, said axial applied force being capable of alternative increase or decrease as a result of the fitment tightness imparted through said bayonet-type coupling device.
References Cited (Backward Citations)
US1786756A
Cited
US2043298A
Cited
US2087688A
Cited
US2096851A
Cited
US2562839A
Cited
US2669287A
Cited
US2825424A
Cited
US2751999A
Cited
US2928496A
Cited
DE1136897B
Cited
CA979768A
Cited
US3966442A
Cited
US4121916A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |