Patent US4308676A successfully refreshed from Google Patents.
Patent US3743181A successfully refreshed from Google Patents.
US3743181A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air treatment apparatus
Assignee: Individual
•
Filing: 1972-04-19
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Granted: 1973-07-03
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Expires: 1992-04-19
Abstract
Abstract A humidifier includes a ducting system associated with an apparatus housing, a moisture pad which rotates to pick up liquid from a pool in the bottom of the housing and a blower for drawing air into the housing and subsequently forcing it out. The blower is actuated, usually by some humidity-sensing device, to blow a stream of air over and through the moist pad, which air exits in a more humid state than when it entered. A container of deodorizing liquid or the like is mounted on the housing above the moisture pad for dispensing said liquid to the pad. The liquid may be for deodorizing, disinfecting and/or medication, such as some prescription drug needed by the occupant of the enclosure serviced by the humidifier. Control equipment is included to regulate the feed of the liquid to the pad.
Inventors
- 👤 R Bentley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:23
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
251 words
In the combination of a ducting system, a blower, a moisture pad, power means for operating the blower and the pad, and means for dispensing and vaporizing a deodorizing or disinfecting liquid into the air in the ducting system, the ducting system being structured to conduct the treated air to an enclosure and return air from the enclosure, the blower being positioned to force air into a path leading to the pad and subsequently into the ducting system leading to the enclosure, the pad being located in a housing having an opening leading into the portion of the ducting system which leads to the enclosure, the pad being foraminous and being mounted for rotation in a path with the lower extent passing through a pool of water, whereby air from the blower passing through the moisture pad will evaporate water and other vaporable material it carries, the improvement comprising: a container of said liquid being connected to means for dispensing said liquid into said housing, said liquid being (1) partially vaporized substantially immediately and moving out of the housing with the air into the duct system and (2) partially mixed with the water in the pad and in the pool where it will continue to vaporize in combination with the water in the pad, the means for dispensing includes a valve connected to an outlet from said container which valve is opened and closed by apparatus actuated by humidistat means for sensing the humidity of the air in the return ducting.
Claim 2
Dependent Claim
251 words
In the combination of a ducting system, a blower, a moisture pad, power means for operating the blower and the pad, and means for dispensing and vaporizing a deodorizing or disinfecting liquid into the air in the ducting system, the ducting system being structured to conduct the treated air to an enclosure and return air from the enclosure, the blower being positioned to force air into a path leading to the pad and subsequently into the ducting system leading to the enclosure, the pad being located in a housing having an opening leading into the portion of the ducting system which leads to the enclosure, the pad being foraminous and being mounted for rotation in a path with the lower extent passing through a pool of water, whereby air from the blower passing through the moisture pad will evaporate water and other vaporable material it carries, the improvement comprising: a container of said liquid being connected to means for dispensing said liquid into said housing, said liquid being (1) partially vaporized substantially immediately and moving out of the housing with the air into the duct system and (2) partially mixed with the water in the pad and in the pool where it will continue to vaporize in combination with the water in the pad, the means for dispensing includes a valve connected to an outlet from said container which valve is opened and closed by apparatus actuated by humidistat means for sensing the humidity of the air in the return ducting.
Claim 3
Dependent Claim
28 words
The combination of claim 1 wherein the container is mounted on the top of the housing and the liquid is dispensed by gravity directly onto the moisture pad.
Claim 4
Dependent Claim
88 words
The combination of claim 2 wherein the valve comprises two openings through the sidewall of a cylinder, one opening being connected to the container outlet and the other being in fluid communication with the interior of the housing, two pistons mounted within said cylinder, the inner ends of said pistons bEing adapted to abut in sealing relationship to prevent fluid flow from one cylinder opening to the other, one of said pistons being manually adjustable along the cylinder axis and the other being biased toward the adjustable one.
Claim 5
Dependent Claim
67 words
The combination of claim 3 wherein the biased piston is retracted from the adjustable one by a solenoid actuated by apparatus which is actuated by the humidistat means, the retraction allowing liquid to flow from the container, the axial retraction of the biased piston in the cylinder being limited by stop means and the axial distance traveled being controlled by the prior adjustment of the adjustable piston.
Claim 6
Dependent Claim
88 words
The combination of claim 1 wherein the valve comprises two openings through the sidewall of a cylinder, one opening being connected to the container outlet and the other being in fluid communication with the interior of the housing, two pistons mounted within said cylinder, the inner ends of said pistons being adapted to abut in sealing relationship to prevent fluid flow from one cylinder opening to the other, one of said pistons being manually adjustable along the cylinder axis and the other being biased toward the adjustable one.
Claim 7
Dependent Claim
67 words
The combination of claim 5 wherein the biased piston is retracted from the adjustable one by a solenoid actuated by apparatus which is actuated by the humidistat means, the retraction allowing liquid to flow from the container, the axial retraction of the biased piston in the cylinder being limited by stop means and the axial distance traveled being controlled by the prior adjustment of the adjustable piston.
Claim 8
Dependent Claim
187 words
In the combination of a humidifier and a means for dispensing and vaporizing a deodorizing or disinfecting liquid into the humidifier, the humidifier including a housing holding a blower for directing a stream of air against a rotating porous moist pad, whereby the air passes through the pad, evaporates water and other vaporable material carried by the pad, and exits from the housing in a more humid state than when it entered, said housing including a pool of water through which the pad passes in its rotating path, the improvement comprising: the dispensing and vaporizing means including a container mounted on top of the housing, an outlet from the container controlled by a valve means, the valve means being in fluid communication with the container and including means for opening and closing an outlet leading into said housing where the liquid is dispensed and vaporized with the water on the moisture pad, said valve means comprising two pistons within a cylinder adapted to abut and stop flow of the liquid, one piston being manually adjustable along the cylinder axis, the other being biased toward the adjustable one.
Claim 9
Dependent Claim
187 words
In the combination of a humidifier and a means for dispensing and vaporizing a deodorizing or disinfecting liquid into the humidifier, the humidifier including a housing holding a blower for directing a stream of air against a rotating porous moist pad, whereby the air passes through the pad, evaporates water and other vaporable material carried by the pad, and exits from the housing in a more humid state than when it entered, said housing including a pool of water through which the pad passes in its rotating path, the improvement comprising: the dispensing and vaporizing means including a container mounted on top of the housing, an outlet from the container controlled by a valve means, the valve means being in fluid communication with the container and including means for opening and closing an outlet leading into said housing where the liquid is dispensed and vaporized with the water on the moisture pad, said valve means comprising two pistons within a cylinder adapted to abut and stop flow of the liquid, one piston being manually adjustable along the cylinder axis, the other being biased toward the adjustable one.
Claim 10
Dependent Claim
25 words
The combination of claim 7 wherein the liquid passing through said valve is dispensed directly onto said pad without first contacting the pool of water.
References Cited (Backward Citations)
US3323784A
Cited
US3480209A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-02 | 1977-01-01 | 1977-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-02 | 1981-01-01 | 1981-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-02 | 1985-01-01 | 1985-07-03 | $7700.00 | Window Closed / Lapsed |