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US4205104A
Expired / Lapsed
US
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Multiple pane window having a thick seal and a process and apparatus for applying the seal
Assignee: Saint Gobain Industries SA
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Filing: 1978-01-16
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Granted: 1980-05-27
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Expires: 1998-01-16
Abstract
Abstract A filamentary seal for multiple pane window is formed of a plastic material having a viscosity greater than 115° Mooney as defined. Particular compositions are given. A filament is applied to a transparent or translucent sheet by an extrusion nozzle at an angle between 15° and 45°, preferably between 25° and 35°. A vertically adjustable extrusion device with a rotatably adjustable nozzle head is described.
Inventors
- 👤 Pierre Chenel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:23
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/673; E06B3/67326; E06B3/6733; E06B3/663; E06B3/66309; E06B3/66328; E06B3/67365; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1768
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
A multiple pane window comprising a pair of transparent or translucent sheets with a filamentary seal between the sheets around the periphery of the window, said filamentary seal being formed of a plastic material having a viscosity greater than 115° Mooney at the end of an 8 minute test at 40° C. as measured by a Mooney consistometer, said plastic material consisting essentially of: Polyisobutylene: 40-70 wt. % Butyl Rubber: 5-17.5 wt. % Carbon Black: 10-40 wt. % Levilite: 0-20 wt. % Molecular Sieve: 0-5 wt. %. and in which the ratio by weight of the polyisobutylene to the butyl rubber is between 4 and 8 to 1.
Claim 2
Dependent Claim
108 words
A multiple pane window comprising a pair of transparent or translucent sheets with a filamentary seal between the sheets around the periphery of the window, said filamentary seal being formed of a plastic material having a viscosity greater than 115° Mooney at the end of an 8 minute test at 40° C. as measured by a Mooney consistometer, said plastic material consisting essentially of: Polyisobutylene: 40-70 wt. % Butyl Rubber: 5-17.5 wt. % Carbon Black: 10-40 wt. % Levilite: 0-20 wt. % Molecular Sieve: 0-5 wt. %. and in which the ratio by weight of the polyisobutylene to the butyl rubber is between 4 and 8 to 1.
Claim 3
Dependent Claim
15 words
A window according to claim 1 in which said ratio is approximately 6 to 1.
Claim 4
Dependent Claim
43 words
A window according to claim 1 in which said molecular sieve is a mixture of two molecular sieves having absorption pores of about 4 A and 10 A in proportions of 0-4 percent and 0-1 percent, respectively, by weight of the plastic material.
Claim 5
Dependent Claim
29 words
A window according to claim 1 in which said filamentary seal has a thickness in the direction of the spacing between the sheets which is greater than 4 mm.
Claim 6
Dependent Claim
29 words
A window according to claim 1 in which said filamentary seal has a thickness in the direction of the spacing between the sheets which is greater than 12 mm.
Claim 7
Dependent Claim
28 words
A window according to claim 1 in which said plastic material is essentially, by weight: Polyisobutylene: 50% Butyl Rubber: 10% Carbon Black: 17.5% Levilite: 20% Molecular Sieve: 2.5%.
Claim 8
Dependent Claim
29 words
A window according to claim 6 in which said molecular sieve is a mixture of two molecular sieves having absorption pores of about 4 A and 10 A, respectively.
References Cited (Backward Citations)
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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) | 1983-05-27 | 1983-11-26 | 1984-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-27 | 1987-11-26 | 1988-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-27 | 1991-11-26 | 1992-05-27 | $7700.00 | Window Closed / Lapsed |