Patent US5490957A successfully refreshed from Google Patents.
← Back to Patent Explorer
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
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

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

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag