Patent US1071748A successfully refreshed from Google Patents.
Patent US4823229A successfully refreshed from Google Patents.
US4823229A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Canopy dryseal
Assignee: W.L. Gore and Associates Inc
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Filing: 1987-08-13
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Granted: 1989-04-18
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Expires: 2007-08-13
Abstract
Abstract This invention relates to a seal for an aircraft canopy having a compressible, resilient core and is encapsulated by a low-density, electrically conductive polymeric tape and to a method for making the seal.
Inventors
- 👤 Alfred F. Waterland III
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:07
CPC Classifications
B; B60; B60J; B60J10/00; B64; B64C; B64C1/00; B64C1/14; B64C1/1476; B64C1/1492; Y; Y10; Y10S; Y10S277/00; Y10S277/919
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
91 words
A canopy seal for use between an aircraft canopy and its framework comprising: resilient compressible core having at least one vertical leg with an inner and outer edge and with a row of apertures cut into said leg; a horizontal base member interconnected with the vertical leg to form an L-shaped channel; a second vertical member attached to the horizontal base member; and a low density polymeric stress intensifier bonded to the inner edge of the vertical leg, said core and intensifier strip being partially encapsulated by electrically conductive polymeric tape.
Claim 2
Dependent Claim
91 words
A canopy seal for use between an aircraft canopy and its framework comprising: resilient compressible core having at least one vertical leg with an inner and outer edge and with a row of apertures cut into said leg; a horizontal base member interconnected with the vertical leg to form an L-shaped channel; a second vertical member attached to the horizontal base member; and a low density polymeric stress intensifier bonded to the inner edge of the vertical leg, said core and intensifier strip being partially encapsulated by electrically conductive polymeric tape.
Claim 3
Dependent Claim
27 words
A canopy seal for use between an aircraft canopy and its framework as claimed in claim 1 wherein said second vertical member is a second vertical leg.
Claim 4
Dependent Claim
18 words
An aircraft canopy seal as claimed in claim 2 wherein the vertical legs are inclined toward each other.
Claim 5
Dependent Claim
28 words
An aircraft canopy seal for use between a canopy and its framework as claimed in claim 1 wherein said second vertical member is an electrically conductive polymeric flap.
Claim 6
Dependent Claim
26 words
An aircraft canopy seal as in claim 1 in which the polymeric tape and electrically conductive polymeric tape are expanded PTFE filled with a conductive material.
Claim 7
Dependent Claim
18 words
An aircraft canopy seal as in claim 1 in which the compressible resilient core is a silicon rubber.
Claim 8
Dependent Claim
16 words
An aircraft canopy seal as in claim 1, wherein said stress intensifier strip is expanded PTFE.
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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) | 1992-04-17 | 1992-10-17 | 1993-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-17 | 1996-10-17 | 1997-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-17 | 2000-10-17 | 2001-04-18 | $7700.00 | Window Closed / Lapsed |