US3807791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety windshields
Assignee: HANFF SERRES AND CIE AUX Ste
•
Filing: 1972-05-15
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Granted: 1974-04-30
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Expires: 1992-05-15
Abstract
Abstract The invention relates to double windshields for vehicles. To ensure the dislodging of the front outer sheet of these windshields after initiation of breakage, it suffices to give a sharp tug on a handle accessible to the driver and connected to an inextensible cable encircling this sheet. An electrical resistance is advantageously provided to heat the space comprised between the two sheets, which is kept dry and permanently isolated from the outside. The invention is particularly adaptable to an automobile vehicle.
Inventors
- 👤 J Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:53
CPC Classifications
B; B60; B60J; B60J1/00; B60J1/20; B60J1/2094; B26; B26D; B26D1/00; B26D1/01; B26D1/547; B60J1/001; B60J10/00; B60J10/60
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
103 words
Double safety windshield for a vehicle, said windshield comprising two facing parallel sheets of glass spaced from one another and adapted to be positioned inside and outside respectIvely relative to the vehicle, an inextensible cable engirdling said outside sheet, and a handle attached to said cable and mountable so as to be easily accessible to a driver inside the vehicle, said cable being arranged so that sudden traction by the driver on said handle ensures the dislocation of said outside sheet after initiation of its breakage, without disturbing said inner sheet, to an extent sufficient to restore the driver''s view through the windshield.
Claim 2
Dependent Claim
103 words
Double safety windshield for a vehicle, said windshield comprising two facing parallel sheets of glass spaced from one another and adapted to be positioned inside and outside respectIvely relative to the vehicle, an inextensible cable engirdling said outside sheet, and a handle attached to said cable and mountable so as to be easily accessible to a driver inside the vehicle, said cable being arranged so that sudden traction by the driver on said handle ensures the dislocation of said outside sheet after initiation of its breakage, without disturbing said inner sheet, to an extent sufficient to restore the driver''s view through the windshield.
Claim 3
Dependent Claim
12 words
Windshield according to claim 1, wherein the inextensible cable is of steel.
Claim 4
Dependent Claim
48 words
Windshield according to claim 1, wherein the inextensible cable is adapted to be anchored at a point of the rigid frame of the vehicle encircling the windshield, said point being arranged on the side of the frame opposite that at which the cable is attached to the handle.
Claim 5
Dependent Claim
20 words
Windshield according to claim 1, wherein the outside sheet has a peripheral portion forming a groove to receive the cable.
Claim 6
Dependent Claim
28 words
Windshield according to claim 1, wherein said handle is arranged to be positioned below and to the left of the windshield seen from the inside of the vehicle.
Claim 7
Dependent Claim
13 words
Windshield according to claim 1, wherein said sheets of glass are curved outwardly.
Claim 8
Dependent Claim
27 words
Windshield according to claim 1, including a flexible sectional element fastened on the peripheral portion of the outer sheet, in which sectional element the cable is housed.
Claim 9
Dependent Claim
13 words
Windshield according to claim 7, wherein said sectional element straddles said peripheral position.
Claim 10
Dependent Claim
14 words
Windshield according to claim 8, wherein said sectional element is formed of separate links.
Claim 11
Dependent Claim
24 words
Windshield according to claim 1, including sealing means for isolating the space comprised between its two sheets permanently from the outside in sealed manner.
Claim 12
Dependent Claim
16 words
Windshield according to claim 10, wherein a dehydrating product is disposed in communication with said space.
Claim 13
Dependent Claim
18 words
Windshield according to claim 11, wherein said dehydrating product is housed in a cavity in said sealing means.
Claim 14
Dependent Claim
18 words
Windshield according to claim 1, including an electrical resistance to heat the space comprised between its two sheets.
Claim 15
Dependent Claim
41 words
In a vehicle, having a frame for a windshield, a windshield according to claim 13, wherein the electrical resistance is mounted along the frame so as to be firmly isolated from sealing joints provided between said frame and the glass sheets.
Claim 16
Dependent Claim
40 words
Windshield according to claim 14, including a thermally insulating channel element, said channel being open towards the inside of the space separating the two sheets, and said channel element housing said electrical resistance and insulating it from the sealing joints.
References Cited (Backward Citations)
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Cited
US2022296A
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US2572124A
Cited
US2838810A
Cited
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Cited
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Cited
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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) | 1977-04-29 | 1977-10-29 | 1978-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-29 | 1981-10-29 | 1982-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-29 | 1985-10-29 | 1986-04-30 | $7700.00 | Window Closed / Lapsed |