Patent US3659516A successfully refreshed from Google Patents.
US3659516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Window ventilators
Assignee: Individual
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Filing: 1969-10-08
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Granted: 1972-05-02
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Expires: 1989-10-08
Abstract
Abstract A window ventilator for a vehicle such as an automobile, comprises a sheet of transparent material such as glass or a plastics material, said sheet having formed therein a plurality of ventilation holes preferably by a moulding operation. The axes of the holes rise from the outside to the inside of the sheet relative to the fitment of the sheet in a window frame, the angle of inclination of said axes preferably being of the order of 45* to 55*.
Inventors
- 👤 Alastair Rigg Macdonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:52
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/24; B60H1/26; B60H1/267
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A window ventilator consisting of a single sheet of transparent material of shape and dimensions such that it can be fitted within the frame of a particular window to be ventilated and formed with a plurality of downwardly and outwardly inclined ventilating holes characterized in that the lower edge of each hole at the inner surface of the sheet is on at least as high a level as the upper edge of the same hole at the outer surface of the sheet when the sheet is in place in the frame, the diameters of the holes being so related to the thickness of the sheet that the angle of inclination of the holes is within the range of 45* to 55* to the plane of the sheet.
Claim 2
Dependent Claim
127 words
A window ventilator consisting of a single sheet of transparent material of shape and dimensions such that it can be fitted within the frame of a particular window to be ventilated and formed with a plurality of downwardly and outwardly inclined ventilating holes characterized in that the lower edge of each hole at the inner surface of the sheet is on at least as high a level as the upper edge of the same hole at the outer surface of the sheet when the sheet is in place in the frame, the diameters of the holes being so related to the thickness of the sheet that the angle of inclination of the holes is within the range of 45* to 55* to the plane of the sheet.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |