US3566409A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilated bump hat
Assignee: RTX Corp
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Filing: 1966-11-08
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Granted: 1971-03-02
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Expires: 1986-11-08
Abstract
Abstract A PROTECTIVE HEADGEAR DEVICE TO BE WORN OVER EXTENDED PERIODS OF TIME BY PERSONS, PARTICULARLY OCCUPANTS OF MOVING VEHICLES, SUBJECT TO HEAD INJURIES CAUSED BY BUMPING AGAINST SURROUNDING OBJECTS, COMPARTMENT WALLS, ETC., WHEREIN THE DEVICE IS PROVIDED WITH FORCED AIR VENTILATION TO DECREASE DISCOMFORT RESULTING FROM CONSTANT WEAR OF THE HEADGEAR.
Inventors
- 👤 James H Hopper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:01
CPC Classifications
A; A42; A42B; A42B1/00; A42B1/04; A42B1/08; A42B3/00; A42B3/04; A42B3/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |