Patent US2322250A successfully refreshed from Google Patents.
Patent US4233796A successfully refreshed from Google Patents.
US4233796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Desiccated spandrel panels
Assignee: PPG Industries Inc
•
Filing: 1978-11-22
•
Granted: 1980-11-18
•
Expires: 1998-11-22
Abstract
Abstract A hermetically sealed spandrel unit has a transparent sheet mounted in facing relationship to a metal sheet having a desiccant containing film mounted thereon.
Inventors
- 👤 Renato J. Mazzoni
- 👤 Vernon A. Shoop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:29
CPC Classifications
E; E04; E04C; E04C2/00; E04C2/54
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
68 words
A spandrel unit comprising: a film containing a desiccant; a pair of panels each having a major surface, the major surface of said panels facing one another with said film between and substantially coextensive with the major surfaces with said desiccant absorbing moisture between the major surfaces; and sealant means mounting said panels to provide a moisture-resistant barrier against moisture penetration between the major surfaces of said panels.
Claim 2
Dependent Claim
68 words
A spandrel unit comprising: a film containing a desiccant; a pair of panels each having a major surface, the major surface of said panels facing one another with said film between and substantially coextensive with the major surfaces with said desiccant absorbing moisture between the major surfaces; and sealant means mounting said panels to provide a moisture-resistant barrier against moisture penetration between the major surfaces of said panels.
Claim 3
Dependent Claim
19 words
The spandrel unit as set forth in claim 1 wherein said desiccant extends beyond the surface of said film.
Claim 4
Dependent Claim
33 words
The spandrel unit as set forth in claim 1 wherein said film has a moisture vapor transmission value of greater than 0 grams/24 hour/1 square meter/mil at 100° F. (83° C.) 90% R.H.
Claim 5
Dependent Claim
28 words
The spandrel unit as set forth in claim 2 or 3 wherein said film is a coating of paint on the major surface of at least one panel.
Claim 6
Dependent Claim
26 words
The spandrel unit as set forth in claim 4 wherein one panel is a metal sheet and said coating of paint is on said metal sheet.
Claim 7
Dependent Claim
23 words
The spandrel unit as set forth in claim 1 wherein said film is adherent to the major surface of at least one panel.
Claim 8
Dependent Claim
40 words
The spandrel unit as set forth in claim 6 wherein said sealant means includes a composite strip having a moisture resistant adhesive on a foil; and said composite strip mounted on at least the peripheral edge portions of said panels.
Claim 9
Dependent Claim
31 words
The spandrel unit as set forth in claim 6 wherein said sealant means includes a layer of moisture-resistant adhesive between the marginal edge portions of the major surfaces of said panels.
Claim 10
Dependent Claim
19 words
The spandrel unit as set forth in claim 6 wherein said desiccant extends beyond a surface of said film.
Claim 11
Dependent Claim
33 words
The spandrel unit as set forth in claim 6 wherein said film has a moisture vapor transmission value of greater than 0 grams/24 hour/1 square meter/mil at 100° F. (83 C) 90% R.H.
Claim 12
Dependent Claim
23 words
The spandrel unit as set forth in claim 3 or 10 wherein said film is a polymeric material having desiccating particles dispersed therein.
Claim 13
Independent Claim
88 words
A method of making a spandrel unit, comprising the steps of: providing a pair of panels each having a major surface; providing a film containing a desiccant on a major surface of at least one panel the film being substantially coextensive with the major surface of the at least one panel; mounting the panels with their major surfaces in facing relationship to one another; sealing the panels to provide a barrier against moisture penetration; and absorbing moisture between major surfaces of said panels by the desiccant containing film.
Claim 14
Independent Claim
88 words
A method of making a spandrel unit, comprising the steps of: providing a pair of panels each having a major surface; providing a film containing a desiccant on a major surface of at least one panel the film being substantially coextensive with the major surface of the at least one panel; mounting the panels with their major surfaces in facing relationship to one another; sealing the panels to provide a barrier against moisture penetration; and absorbing moisture between major surfaces of said panels by the desiccant containing film.
Claim 15
Dependent Claim
42 words
The method as set forth in claim 12 wherein said step of providing a film containing desiccant includes the steps of: spraying a coating on the major surface of at least one of the panels; and providing a desiccant on the coating.
Claim 16
Dependent Claim
63 words
The method as set forth in claim 12 wherein said step of providing a film containing a desiccant includes the steps of mixing desiccating particles in a coating having a moisture vapor transmission value of greater than 0.1 grams/24 hours/1 square meter/mil at 100° F. (83° C.) 90% R.H. and flowing the coating on the major surface of the at least one panel.
Claim 17
Dependent Claim
39 words
The method of making a spandrel unit as set forth in claim 12 wherein said sealing step includes the step of providing a layer of moisture resistant sealant between marginal edge portions of the major surfaces of said panels.
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) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |