US4419326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor dispersing process
Assignee: De Laire Inc
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Filing: 1982-09-21
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Granted: 1983-12-06
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Expires: 2002-09-21
Abstract
Abstract A vapor dispersing device in which evaporative dispersion of volatile and diffusive components of an air treating agent is regulated over an extending period by the use of a container, for the agent, into which at least one rigid porous wick extends to transfer the agent from the container to a porous plastic element from the surface of which dispersion of the agent will occur by means of evaporation, the surface of the element being impregnated with an occluding agent, the evaporation rate of which is chosen, relative to rate of deposition on non-volatile components of the air treating agent in the element, to result in an even dispersion rate over a desired operating period.
Inventors
- 👤 Thomas F. Santini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:43
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12; A61L9/127
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
106 words
A process for vaporizing a volatile air treating liquid having a volatile component and a non-volatile component, comprising supplying said air treating liquid to a porous element having an open cell surface, predetermining the rate at which said non-volatile component will occlude said open cell surface, and impregnating said open cell surface, prior to contact by said air treating liquid, with a volatile occluding agent whose rate of vaporization from said open cell surface bears a desired relationship to said predetermined occluding rate of said non-volatile component, whereby the evaporation rate of said volatile component occurs at a desired rate over an extended period of time.
Claim 2
Dependent Claim
106 words
A process for vaporizing a volatile air treating liquid having a volatile component and a non-volatile component, comprising supplying said air treating liquid to a porous element having an open cell surface, predetermining the rate at which said non-volatile component will occlude said open cell surface, and impregnating said open cell surface, prior to contact by said air treating liquid, with a volatile occluding agent whose rate of vaporization from said open cell surface bears a desired relationship to said predetermined occluding rate of said non-volatile component, whereby the evaporation rate of said volatile component occurs at a desired rate over an extended period of time.
Claim 3
Dependent Claim
23 words
A vapor dispersion process according to claim 1 wherein the occluding agent is chosen from the group comprising isoparaffinic or normal paraffinic solvents.
Claim 4
Dependent Claim
103 words
A process for vaporizing a volatile air treating liquid having a volatile component and a non-volatile component, comprising supplying said air treating liquid to a porous element having an open cell surface, predetermining the rate at which said non-volatile component will occlude said open cell surface, and impregnating said open cell surface prior to contact by said air treating liquid, with a volatile occluding agent whose rate of vaporization from said open cell surface equals said predetermined occluding rate of said non-volatile component, whereby the evaporation rate of said volatile component occurs at a substantially uniform rate over an extended period of time.
Claim 5
Dependent Claim
103 words
A process for vaporizing a volatile air treating liquid having a volatile component and a non-volatile component, comprising supplying said air treating liquid to a porous element having an open cell surface, predetermining the rate at which said non-volatile component will occlude said open cell surface, and impregnating said open cell surface prior to contact by said air treating liquid, with a volatile occluding agent whose rate of vaporization from said open cell surface equals said predetermined occluding rate of said non-volatile component, whereby the evaporation rate of said volatile component occurs at a substantially uniform rate over an extended period of time.
Claim 6
Dependent Claim
20 words
A vapor dispersion process according to claim 3 wherein the liquid includes up to 30% by weight of non-volatile components.
Claim 7
Dependent Claim
20 words
A vapor dispersion process according to claim 4 wherein the liquid includes more than 2% by weight of non-volatile components.
References Cited (Backward Citations)
US152519A
Cited
US1129897A
Cited
US1358928A
Cited
FR584271A
Cited
US2616759A
Cited
US2787496A
Cited
US2975464A
Cited
US3482929A
Cited
US3595607A
Cited
US3550853A
Cited
US3820308A
Cited
US4094639A
Cited
EP0021586A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |