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US3823926A Expired / Lapsed US ⏱️ 0.0 years remaining

Humidifier

Assignee: Nu-Air Humidifier Corp
•
Filing: 1973-06-21
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Granted: 1974-07-16
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Expires: 1993-06-21
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Abstract

Abstract A humidifier apparatus is provided for use with a furnace system which includes means to circulate heated air. The humidifier apparatus includes a housing formed of a fixed frame member and a readily detachable cover member. The fixed frame member is adapted to be secured to an air conduit of a furnace system and mounts a filter pad or liquid-air contactor. The cover member is readily detachably assembled to the frame member so that the cover may be removed without disturbance of the filter pad or other humidifier elements.

Inventors

  • 👤 L Bracich

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 22:54
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; Y; Y10; Y10S; Y10S261/00; Y10S261/15

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 326 words
A humidifier apparatus for use with a furnace system which includes an air conduit and means for circulating heated air, said humidifier apparatus comprising: a housing formed of a fixed frame conduit and a readily detachable cover conduit longitudinally positioned relative to said fixed frame conduit, said fixed frame conduit fixedly secured to said air conduit and defining an air opening to said air conduit, said cover conduit including an air inlet whereby there is provided an air path from said inlet through said cover conduit and frame conduit and into said air conduit, means for detachably securing said cover conduit to said fixed frame conduit, a filter pad removably helD transverse of said air path and generally parallel to the connection between said fixed frame conduit and said cover conduit, said filter pad having a feed trough in its upper end, said feed trough being open along its bottom along substantially the entire upper edge of said filter, a collecting trough integrally formed with the fixed frame conduit along its base, said trough having a drain opening, said fixed frame conduit is provided with means for securing said filter pad in place which comprises a peripheral recess adjacent said air opening for positioning the sides of said filter, a lower alignment recess in said collecting trough for receiving and positioning the bottom edge of the filter pad, and retaining means secured to the upper end of said fixed frame conduit for retaining the filter pad along its feed trough upon movement of the upper edge of said pad longitudinally of said frame member, means positioned above said feed trough for directing water into said feed trough so that water will flow by gravity over said filter pad with excess water being collected in said collecting trough, and a flexible conduit connected to said air inlet whereby said cover member may be readily separated from said frame member when said filter pad is to be removed.
Claim 2
Dependent Claim 326 words
A humidifier apparatus for use with a furnace system which includes an air conduit and means for circulating heated air, said humidifier apparatus comprising: a housing formed of a fixed frame conduit and a readily detachable cover conduit longitudinally positioned relative to said fixed frame conduit, said fixed frame conduit fixedly secured to said air conduit and defining an air opening to said air conduit, said cover conduit including an air inlet whereby there is provided an air path from said inlet through said cover conduit and frame conduit and into said air conduit, means for detachably securing said cover conduit to said fixed frame conduit, a filter pad removably helD transverse of said air path and generally parallel to the connection between said fixed frame conduit and said cover conduit, said filter pad having a feed trough in its upper end, said feed trough being open along its bottom along substantially the entire upper edge of said filter, a collecting trough integrally formed with the fixed frame conduit along its base, said trough having a drain opening, said fixed frame conduit is provided with means for securing said filter pad in place which comprises a peripheral recess adjacent said air opening for positioning the sides of said filter, a lower alignment recess in said collecting trough for receiving and positioning the bottom edge of the filter pad, and retaining means secured to the upper end of said fixed frame conduit for retaining the filter pad along its feed trough upon movement of the upper edge of said pad longitudinally of said frame member, means positioned above said feed trough for directing water into said feed trough so that water will flow by gravity over said filter pad with excess water being collected in said collecting trough, and a flexible conduit connected to said air inlet whereby said cover member may be readily separated from said frame member when said filter pad is to be removed.
Claim 3
Dependent Claim 23 words
A humidifier apparatus as defined by claim 1 wherein said filter pad is made of a honeycombed or corrugated body of absorptive material.
Claim 4
Dependent Claim 18 words
A humidifier apparatus as defined by claim 2 wherein the retaining means comprises a pair of retaining springs.

References Cited (Backward Citations)

US1746283A Cited
US2252724A Cited
US2137905A Cited
US2620722A Cited
US2847989A Cited
US3075750A Cited
US3171401A Cited
US3472496A Cited
GB1228872A Cited
US3636683A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-07-15 1978-01-14 1978-07-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-07-15 1982-01-14 1982-07-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-07-15 1986-01-14 1986-07-16 $7700.00 Window Closed / Lapsed

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