Patent US3630812A successfully refreshed from Google Patents.
US3630812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Windshield for motor vehicles
Assignee: Compagnie de Saint Gobain SA
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Filing: 1969-01-27
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Granted: 1971-12-28
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Expires: 1989-01-27
Abstract
Abstract Windshields are constructed on a basis of the tolerance of the human body to impact, with special attention to the tolerance of head and spine, macroscopic lesions on the cervical vertibrae and resistance of the brain to cerebral lesions. The designs contemplate a windshield, of unbreaking center and fragile rim, which will transmit the shock of impact and break the rim in the few microseconds before body tolerance to impact has been exceeded. An impact duration of 30 microseconds is treated as the upper limit of toleration within which the windshield must shear off at its edges. Several designs are disclosed based upon special treatments for the center and the rim.
Inventors
- 👤 Fritz Bruckner
- 👤 Hans Krings
- 👤 Hans Peter Siemonsen
- 👤 Franz Kramling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:24
CPC Classifications
B; B32; B32B; B32B17/00; B32B17/06; B32B17/10; B32B17/10005; B32B17/1055; B32B17/10761; B32B17/10009; B32B17/10018; B32B17/10036; B60; B60J; B60J1/00; B60J1/008; B60J1/02; B60J10/00; B60J10/70; B32B2367/00; Y; Y10; Y10T; Y10T428/00; Y10T428/15; Y10T428/31; Y10T428/315; Y10T428/31504; Y10T428/31551; Y10T428/31627; Y10T428/3163
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
The windshield of claim 1, said outer sheet being essentially untempered over its entire area.
Claim 2
Dependent Claim
40 words
The windshield of claim 1, material of said outer sheet being removed along a line in said border portion, contiguous to the periphery of said inner sheet, to thereby form a circumscribing weakening of said outer sheet, along said line.
Claim 3
Dependent Claim
12 words
The windshield of claim 1, said inner sheet being of thermoplastic material.
Claim 4
Dependent Claim
13 words
The windshield of claim 1, said inner sheet being of essentially untempered glass.
Claim 5
Dependent Claim
15 words
The windshield of claim 1, said inner sheet being of glass strengthened by ion exchange.
References Cited (Backward Citations)
US2679467A
Cited
US3081209A
Cited
US3169900A
Cited
US2808355A
Cited
US3375626A
Cited
US3427770A
Cited
US3434915A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |