Patent US4618462A successfully refreshed from Google Patents.
US4618462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Humidifier with controlled heat input
Assignee: Individual
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Filing: 1984-10-17
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Granted: 1986-10-21
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Expires: 2004-10-17
Abstract
Abstract The present invention relates to humidifiers as used in research and in the calibration of humidity measuring instruments for producing a saturated gas stream. Specifically the invention relates to humidifiers comprising a bubble type and an extended surface type humidifier in gas flow communication one to the other and including temperature control means.
Inventors
- 👤 Robert S. Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:02
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/0004; G01N33/0006; F; F24; F24F; F24F6/00; G05; G05D; G05D22/00; G05D22/02; Y; Y10; Y10S; Y10S261/00; Y10S261/65
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
124 words
A humidifier for evaporating a liquid into a gas comprising: a bubble humidifier including a gas inlet and a bubble chamber containing said liquid and connected in gas flow communication with said gas inlet; a labyrinth extended surface humidifier positioned in spaced relation above said liquid connected in gas flow communication with said bubble chamber and an extend surface element located throughout said surface humidifier; a series of capillary action water transmitting means connecting said liquid in said bubble chamber and said surface element in said surface humidifier; a first heat generating means for heating the liquid in said bubble chamber; and a first temperature control means responsive to temperature within the bubble chamber for controlling the operation of said first heat generating means.
Claim 2
Dependent Claim
124 words
A humidifier for evaporating a liquid into a gas comprising: a bubble humidifier including a gas inlet and a bubble chamber containing said liquid and connected in gas flow communication with said gas inlet; a labyrinth extended surface humidifier positioned in spaced relation above said liquid connected in gas flow communication with said bubble chamber and an extend surface element located throughout said surface humidifier; a series of capillary action water transmitting means connecting said liquid in said bubble chamber and said surface element in said surface humidifier; a first heat generating means for heating the liquid in said bubble chamber; and a first temperature control means responsive to temperature within the bubble chamber for controlling the operation of said first heat generating means.
Claim 3
Dependent Claim
44 words
A humidifier according to claim 1, including a second heat generating means for heating the gas in said labyrinth extended surface humidifier and a second temperature control means responsive to temperature within the labyrinth for controlling the operation of said second heat generating means.
Claim 4
Dependent Claim
43 words
A humidifier according to claim 2 wherein said labyrinth extended surface humidifier comprises a roll of a laminate, said laminate comprising a strip of wire mesh and superimposed thereon a strip of absorbent material, and said capillary action means dampens said absorbent material.
Claim 5
Dependent Claim
64 words
A humidifier according to claim 3 wherein said first temperature control means comprises a temperature sensor producing a first signal indicative of liquid temperature, a means for comparing said first signal with a predetermined value to produce a first error signal, said first heat generating means being responsive to said first error signal to bring said liquid temperature into coincidence with said predetermined value.
Claim 6
Dependent Claim
64 words
A humidifier according to claim 4 wherein said second temperature control means comprises a temperature sensor producing a second signal indicative of gas temperature, a means for comparing said second signal with a predetermined value to produce a second error signal, said second heat generating means being responsive to said second error signal to bring said gas temperature into coincidence with said predetermined value.
Claim 7
Dependent Claim
18 words
A humidifier according to claim 5 wherein said second heat generating means is said strip of wire mesh.
Claim 8
Dependent Claim
14 words
A humidifier according to claim 6 where said strip of wire mesh is corrugated.
Claim 9
Dependent Claim
32 words
A humidifier according to claim 7 wherein said said capillary action means for dampening said absorbent material comprises a plurality of wick elements extending between said absorbent material and said bubble chamber.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |