US4792425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a windshield and leaf screen assembly
Assignee: Pilkington North America Inc
•
Filing: 1987-05-15
•
Granted: 1988-12-20
•
Expires: 2007-05-15
Abstract
Abstract A method of forming a window assembly which includes a windshield and a gasket formed by curing a polymeric gasket material in situ on the windshield to encapsulate a marginal peripheral edge thereof and form an integral leaf screen and mounting tab. The gasket is formed in a mold with the windshield typically by a reaction injection molding process. The gasket-forming cavities in the mold can be separated by removable plugs and be connected to multiple inlet means for separately filling the cavities. The gasket, leaf screen and mounting tab can be formed of one material, or the leaf screen and tab can be formed of a different material then the gasket.
Inventors
- 👤 William R. Weaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:34
CPC Classifications
B; B62; B62D; B62D65/00; B62D65/02; B62D65/04; B29; B29C; B29C45/00; B29C45/14; B29C45/14336; B29C45/14434; B29C45/16; B29C45/1635; B29C45/1671; B60; B60J; B60J1/00; B60J1/02; B60J1/08; B29C45/14418; B29L; B29L2031/00; B29L2031/26
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
188 words
A method of producing a window assembly including at least one transparent sheet having a first gasket member adhered to the peripheral portion thereof and a leaf screen formed as a second gasket member integral with said first gasket member, said first and second gasket members completely encapsulating the peripheral edge of said sheet, said method including the steps of: (a) positioning said sheet of transparent material within the interior of a mold chamber formed by at least two cooperating mold sections; (b) said mold sections provided with a gasket shaping portion which cooperates with a first peripheral portion of the sheet to define a first gasket forming cavity corresponding to a first gasket member to be formed and cooperating with a second peripheral portion of the sheet to define a second gasket forming cavity corresponding to a second gasket member to be formed; (c) injecting into the first and second gasket forming cavities a curable composition, curing said composition in contact with the sheet such that it adheres thereto to produce the first and second gasket members; and (d) removing the window assembly from the mold chamber.
Claim 2
Independent Claim
188 words
A method of producing a window assembly including at least one transparent sheet having a first gasket member adhered to the peripheral portion thereof and a leaf screen formed as a second gasket member integral with said first gasket member, said first and second gasket members completely encapsulating the peripheral edge of said sheet, said method including the steps of: (a) positioning said sheet of transparent material within the interior of a mold chamber formed by at least two cooperating mold sections; (b) said mold sections provided with a gasket shaping portion which cooperates with a first peripheral portion of the sheet to define a first gasket forming cavity corresponding to a first gasket member to be formed and cooperating with a second peripheral portion of the sheet to define a second gasket forming cavity corresponding to a second gasket member to be formed; (c) injecting into the first and second gasket forming cavities a curable composition, curing said composition in contact with the sheet such that it adheres thereto to produce the first and second gasket members; and (d) removing the window assembly from the mold chamber.
Claim 3
Dependent Claim
26 words
The method according to claim 1 wherein said injected composition is a flowable multi-constituent material which polymerizes and cures in situ in contact with the sheet.
Claim 4
Dependent Claim
61 words
The method according to claim 1 including a step of inserting a plug between said first and second cavities before performing step (c), and performing step (c) by injecting said composition into one of said first and second gasket forming cavities, removing said plug and then injecting said composition into the other one of said first and second gasket forming cavities.
Claim 5
Dependent Claim
40 words
The method according to claim 3 wherein said composition injected into one of said first and second gasket forming cavities is a different material than the composition injected into the other one of said first and second gasket forming cavities.
References Cited (Backward Citations)
US2736067A
Cited
US3263014A
Cited
GB1080271A
Cited
US3443005A
Cited
US3822107A
Cited
US3968612A
Cited
US4061455A
Cited
US4072340A
Cited
GB1570301A
Cited
US4183778A
Cited
US4196162A
Cited
US4332413A
Cited
US4364595A
Cited
US4519962A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-12-20 | 1992-06-20 | 1992-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-12-20 | 1996-06-20 | 1996-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-12-20 | 2000-06-20 | 2000-12-20 | $7700.00 | Window Closed / Lapsed |