Patent US5490957A successfully refreshed from Google Patents.
US5490957A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable humidifier
Assignee: Lasko Holdings Inc
•
Filing: 1995-04-05
•
Granted: 1996-02-13
•
Expires: 2015-04-05
Abstract
Abstract A portable humidifier that provides a visual indication of the internal water flow, with a motor for pumping water so that it provides a visible show, flows over at least one vertical filter, which provides uniform increased humidity for the filter area, which motor is also attached to a fan blade to disperse moisture into the environment.
Inventors
- 👤 William E. Lasko
- 👤 Charles Litvin
- 👤 Kurt F. Hafeken
- 👤 Leo Gonzales
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:09
CPC Classifications
F; F24; F24F; F24F6/00; F24F6/02; F24F6/04; F24F2221/00; F24F2221/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
255 words
A portable humidifier for providing moisture laden air which comprises an outer housing having a front wall, side walls, a top and bottom wall, and a rear wall, said top wall having an air outlet opening with a grill therein, said side walls and said rear wall having an air inlet grill opening, a supply of water in said housing, motor means carried in said housing with output shafts at the top and bottom of said motor means, water pump means connected to said bottom output shaft, said water pump means having a water inlet in communication with said water in said housing and a water outlet, hose means in communication with said pump water outlet, a water trough below said top wall extending between said side walls, a plurality of filter supply drip holes in said trough, said hose means extending across said trough, and having a water supply nozzle to supply water thereto, at least one vertically oriented filter means below said openings in said water trough to receive water therefrom, and which is above the water on said bottom housing wall, said hose having a water show nozzle on the end thereof, viewing means in said rear wall to permit viewing of water discharged from said water show nozzle, and fan blade means connected to said motor top output shaft to cause air to flow in through said air inlet grill opening, through said water filter means, and to cause moisture laden air to flow out through said air outlet opening grill.
Claim 2
Dependent Claim
255 words
A portable humidifier for providing moisture laden air which comprises an outer housing having a front wall, side walls, a top and bottom wall, and a rear wall, said top wall having an air outlet opening with a grill therein, said side walls and said rear wall having an air inlet grill opening, a supply of water in said housing, motor means carried in said housing with output shafts at the top and bottom of said motor means, water pump means connected to said bottom output shaft, said water pump means having a water inlet in communication with said water in said housing and a water outlet, hose means in communication with said pump water outlet, a water trough below said top wall extending between said side walls, a plurality of filter supply drip holes in said trough, said hose means extending across said trough, and having a water supply nozzle to supply water thereto, at least one vertically oriented filter means below said openings in said water trough to receive water therefrom, and which is above the water on said bottom housing wall, said hose having a water show nozzle on the end thereof, viewing means in said rear wall to permit viewing of water discharged from said water show nozzle, and fan blade means connected to said motor top output shaft to cause air to flow in through said air inlet grill opening, through said water filter means, and to cause moisture laden air to flow out through said air outlet opening grill.
Claim 3
Dependent Claim
20 words
A portable humidifier as defined in claim 1 in which said filter means is of an expanded aluminum/paper honeycomb construction.
Claim 4
Dependent Claim
18 words
A portable humidifier as defined in claim 1 in which said outer housing is of two piece construction.
Claim 5
Dependent Claim
16 words
A portable humidifier as defined in claim 1 in which said viewing means is a lens.
References Cited (Backward Citations)
US2769620A
Cited
US2752134A
Cited
US2961226A
Cited
NL8200083A
Cited
DE3305390A1
Cited
US4562016A
Cited
US4588425A
Cited
US4921642A
Cited
US4967728A
Cited
US5250232A
Cited
US5143656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-12 | 1999-08-14 | 2000-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-12 | 2003-08-14 | 2004-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-12 | 2007-08-14 | 2008-02-13 | $7700.00 | Window Closed / Lapsed |