US3771276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple-glazed breather windows
Assignee: PPG Industries Inc
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Filing: 1972-07-14
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Granted: 1973-11-13
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Expires: 1992-07-14
Abstract
Abstract A multiple-glazed unit provided with breather apparatus comprising a capillary tube connected to an elongated column of desiccant material.
Inventors
- 👤 J Stewart
- 👤 G Bowser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:08
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/677; E06B3/67; E06B3/6707
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
217 words
In a glazing unit comprised of a pair of rigid sheets supported in opposed, spaced relation to each other by perimeter, marginal edge spacer means defining with said sheets an enclosed space therebetween, said perimeter spacer means having a dehydrator carried thereby in communication with said enclosed space, the improvement which comprises a breather device comprising: an elongated tube filled with a column of desiccant supported by said perimeter spacer means, said elongated tube having a first opening in the wall of said tube adjacent one end thereof and located in the enclosed space of said unit adjacent said dehydrator, and a second opening in the wall of said tube spaced from said first opening and adjacent the other end of said elongated tube, and an elongated, open-ended capillary tube having one end thereof connected to said elongated tube at said second-named opening therein and the other end thereof exposed and open to the atmosphere surrounding said glazed unit to provide an open passage for air between the enclosed space of said glazed unit and the atmosphere surrounding said unit, whereby the atmosphere surrounding said glazed unit is free to pass through said elongated, open-ended capillary tube and through substantially the entire column of desiccant within said elongated tube into the enclosed space of said glazed unit.
Claim 2
Dependent Claim
217 words
In a glazing unit comprised of a pair of rigid sheets supported in opposed, spaced relation to each other by perimeter, marginal edge spacer means defining with said sheets an enclosed space therebetween, said perimeter spacer means having a dehydrator carried thereby in communication with said enclosed space, the improvement which comprises a breather device comprising: an elongated tube filled with a column of desiccant supported by said perimeter spacer means, said elongated tube having a first opening in the wall of said tube adjacent one end thereof and located in the enclosed space of said unit adjacent said dehydrator, and a second opening in the wall of said tube spaced from said first opening and adjacent the other end of said elongated tube, and an elongated, open-ended capillary tube having one end thereof connected to said elongated tube at said second-named opening therein and the other end thereof exposed and open to the atmosphere surrounding said glazed unit to provide an open passage for air between the enclosed space of said glazed unit and the atmosphere surrounding said unit, whereby the atmosphere surrounding said glazed unit is free to pass through said elongated, open-ended capillary tube and through substantially the entire column of desiccant within said elongated tube into the enclosed space of said glazed unit.
Claim 3
Dependent Claim
23 words
The glazing unit of claim 1 in which the dehydrator comprises a desiccant material dispersed in a matrix of moisture vapor transmittable material.
Claim 4
Dependent Claim
15 words
The glazing unit of claim 1 in which the dehydrator comprises bags of desiccant material.
Claim 5
Dependent Claim
43 words
The glazing unit of claim 2 which further includes sections of channeling disposed about the perimeter of the unit and wherein said capillary tube has a free end residing in a space defined between said channeling and adjacent edge portions of said unit.
Claim 6
Dependent Claim
43 words
The glazing unit of claim 3 which further includes sections of channeling dIsposed about the permimeter of the unit and wherein said capillary tube has a free end residing in a space defined between said channeling and adjacent edge portions of said unit.
Claim 7
Dependent Claim
36 words
The glazing unit of claim 3 wherein said spacer means comprises a channel member containing an air permeable material and said channel member is closed on a side facing said enclosed space with a foraminous strip.
Claim 8
Dependent Claim
19 words
The glazing unit of claim 1 wherein at least one of said rigid sheets is comprised of tinted glass.
Claim 9
Dependent Claim
24 words
The glazing unit of claim 1 wherein at least one of said rigid sheets is comprised of glass coated with a transparent, reflective film.
Claim 10
Dependent Claim
183 words
In a glazing unit comprised of a pair of rigid sheets supported in opposed, spaced relation to each other by perimeter, marginal edge spacer means defining with said sheets an enclosed space therebetween, said perimeter spacer means having a dehydrator carried thereby in communication with said enclosed space, the improvement which comprises a breather device comprising: an elongated tube filled with a column of desiccant, said elongated tube being separate from and located adjacent said perimeter spacer means and having a first opening adjacent one end thereof located in communication with the enclosed space of said unit adjacent said spacer means, and a second opening spaced from said first opening and located adjacent the other end of said elongated tube in communication with and open to the atmosphere surrounding said unit to provide an open passage for air between the enclosed space of said unit and the atmosphere surrounding said unit, whereby air from within the enclosed space of said unit and from the atmosphere surrounding said unit is free to pass through substantially the entire column of desiccant within said elongated tube.
Claim 11
Dependent Claim
183 words
In a glazing unit comprised of a pair of rigid sheets supported in opposed, spaced relation to each other by perimeter, marginal edge spacer means defining with said sheets an enclosed space therebetween, said perimeter spacer means having a dehydrator carried thereby in communication with said enclosed space, the improvement which comprises a breather device comprising: an elongated tube filled with a column of desiccant, said elongated tube being separate from and located adjacent said perimeter spacer means and having a first opening adjacent one end thereof located in communication with the enclosed space of said unit adjacent said spacer means, and a second opening spaced from said first opening and located adjacent the other end of said elongated tube in communication with and open to the atmosphere surrounding said unit to provide an open passage for air between the enclosed space of said unit and the atmosphere surrounding said unit, whereby air from within the enclosed space of said unit and from the atmosphere surrounding said unit is free to pass through substantially the entire column of desiccant within said elongated tube.
Claim 12
Dependent Claim
102 words
The glazing unit of claim 9 which further includes an elongated open-ended capillary tube having one end thereof connected to said elongated tube at said second-named opening therein and the other end thereof exposed and open to the atmosphere surrounding said unit to further provide said open passage for air between the enclosed space of said unit and the atmosphere surrounding said unit, whereby air from within the enclosed space of said unit and from the atmosphere surrounding said unit is free to pass through said elongated open-ended capillary tube and through substantially the entire column of desiccant within said elongated tube.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-12 | 1977-05-14 | 1977-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-12 | 1981-05-14 | 1981-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-12 | 1985-05-14 | 1985-11-13 | $7700.00 | Window Closed / Lapsed |