US4076877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellular structure plate
Assignee: Vereinigte Flugtechnische Werke Fokker GmbH
•
Filing: 1975-05-12
•
Granted: 1978-02-28
•
Expires: 1995-05-12
Abstract
Abstract A flat honeycomb filler plate is provided with recesses to receive laminated, curable inserts. Flat top and bottom sides of the plate are covered by curable skins and a curable ribbon is wrapped around the narrow sides of that plate. The entire assembly is heat cured to obtain an intimate bond.
Inventors
- 👤 Wilhelm Tanzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:26
CPC Classifications
B; B32; B32B; B32B3/00; B32B3/10; B32B3/12; B32B27/00; B32B27/06; B32B27/08; B32B38/00; B32B38/10; E; E04; E04C; E04C2/00; E04C2/30; E04C2/34; E04C2/36; E04C2/365; F; F16; F16B; F16B5/00; F16B5/01; B32B2305/00; B32B2305/02; B32B2305/024; B32B2305/08; B32B2398/00; B32B2398/10; B32B2607/00; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1003; Y10T428/00; Y10T428/23; Y10T428/234; Y10T428/236; Y10T428/24; Y10T428/24149; Y10T428/24157
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
124 words
Cellular structure plate with well defined locations for taking up external forces, comprising: a flat filler plate having cell structure and a plurality of recesses, respectively at the said locations, each recess being larger than the cells of the structure; insert bodies inserted in the recesses and made of heat curable, laminated resin plastic, heat cured when inserted; a skin covering top and bottom of the filler plate including the insert bodies and being also made of plastic heat cured when applied to the plate, the skins being bonded to the insert bodies as a result from curing when in place; and a laminated ribbon having a precured resin outer layer a curable resin inner layer wrapped around the plate and heat cured thereafter.
Claim 2
Dependent Claim
124 words
Cellular structure plate with well defined locations for taking up external forces, comprising: a flat filler plate having cell structure and a plurality of recesses, respectively at the said locations, each recess being larger than the cells of the structure; insert bodies inserted in the recesses and made of heat curable, laminated resin plastic, heat cured when inserted; a skin covering top and bottom of the filler plate including the insert bodies and being also made of plastic heat cured when applied to the plate, the skins being bonded to the insert bodies as a result from curing when in place; and a laminated ribbon having a precured resin outer layer a curable resin inner layer wrapped around the plate and heat cured thereafter.
Claim 3
Dependent Claim
20 words
Cellular plate as in claim 1 wherein the cell structure has honeycomb cross-section in planes parallel to said flat sides.
Claim 4
Dependent Claim
128 words
Cellular structure plate with well defined locations for taking up external forces, comprising: a flat filler plate having cells which extend transverse to the extension of the plate; the plate having recesses respectively at the said locations and having the form of missed cell structures, extending at least from one flat side in the said transverse direction; inserts of laminated structure in said recesses and comprised of plastic that was heat cured following insertion in said plate; a skin covering both flat sides and made of plastic that was heat cured in place, together with said inserts; and a laminated ribbon having a precured resin outer layer, and a heat curable inner layer, being wrapped around the plate, the inner layer having been heat cured following the wrapping.
Claim 5
Dependent Claim
128 words
Cellular structure plate with well defined locations for taking up external forces, comprising: a flat filler plate having cells which extend transverse to the extension of the plate; the plate having recesses respectively at the said locations and having the form of missed cell structures, extending at least from one flat side in the said transverse direction; inserts of laminated structure in said recesses and comprised of plastic that was heat cured following insertion in said plate; a skin covering both flat sides and made of plastic that was heat cured in place, together with said inserts; and a laminated ribbon having a precured resin outer layer, and a heat curable inner layer, being wrapped around the plate, the inner layer having been heat cured following the wrapping.
References Cited (Backward Citations)
US2585557A
Cited
US2837779A
Cited
US2823460A
Cited
US3016578A
Cited
US3173520A
Cited
US3305996A
Cited
US3470058A
Cited
US3380552A
Cited
US3697630A
Cited
US3485282A
Cited
US3887739A
Cited
US3886023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |