US3868796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Side door intrusion protection
Assignee: Ford Motor Co
•
Filing: 1973-04-04
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Granted: 1975-03-04
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Expires: 1993-04-04
Abstract
Abstract A composite beam for rendering side impact protection to a door of an automobile. The conventional outer skin or panel of the door is integrated as part of a beam; an inner corrugated panel is welded at opposite edges to the outer panel and the void therebetween is filled with foam in a manner to provide a surface to surface bond between the panels to complete said beam.
Inventors
- 👤 George F Bush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:22
CPC Classifications
B; B60; B60J; B60J5/00; B60J5/04; B60J5/042; B60J5/0452; B60J5/045
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
164 words
A reinforced door panel construction, comprising: a. an annular frame having a peripheral flange lying substantially transverse to an axis of said frame and forming a mounting surface, b. an outer door panel secured to said flange at least at circumferentially spaced locations of said flange, c. a convoluted inner panel secured to said outer panel at least at two opposite edges thereof, said inner panel being formed from high strength cold-rolled steel having a strength level at least 90,000 ksi, the convolutions of said inner panel have a height no greater than three times the minimum thickness of said foam separating said panels, and each panel being formed of thin gauge sheet material no greater in thickness than 0.031, and d. a rigid foam core effective to substantially occupy the entire space between said inner and outer panels and effective to provide the sole surface to surface bond between said panels, said panel and foam composite gradually deforming under load without abrupt crumbling.
Claim 2
Dependent Claim
164 words
A reinforced door panel construction, comprising: a. an annular frame having a peripheral flange lying substantially transverse to an axis of said frame and forming a mounting surface, b. an outer door panel secured to said flange at least at circumferentially spaced locations of said flange, c. a convoluted inner panel secured to said outer panel at least at two opposite edges thereof, said inner panel being formed from high strength cold-rolled steel having a strength level at least 90,000 ksi, the convolutions of said inner panel have a height no greater than three times the minimum thickness of said foam separating said panels, and each panel being formed of thin gauge sheet material no greater in thickness than 0.031, and d. a rigid foam core effective to substantially occupy the entire space between said inner and outer panels and effective to provide the sole surface to surface bond between said panels, said panel and foam composite gradually deforming under load without abrupt crumbling.
Claim 3
Dependent Claim
27 words
A reinforced door panel construction, as in claim 1, in which said inner panel is peripherally secured to said outer panel at circumferentially spaced locations by welding.
References Cited (Backward Citations)
US2125761A
Cited
US2298001A
Cited
US3200026A
Cited
US3368473A
Cited
US3314196A
Cited
US3449881A
Cited
US3555756A
Cited
US3583123A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |