US3250907A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Runway lighting unit
Assignee: Westinghouse Electric Corp
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Filing: 1965-05-10
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Granted: 1966-05-10
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Expires: 1985-05-10
Abstract
No abstract record available.
Inventors
- 👤 Merle E Keck
- 👤 Charles H Loch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:37
CPC Classifications
B; B64; B64F; B64F1/00; B64F1/18; B64F1/20; B64F1/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A RUNWAY LIGHTING UNIT INCLUDING A HOUSING HAVING A DOWNWARDLY TAPERING TROUGH IN A SURFACE THEREOF, A WINDOW FORMED IN SAID HOUSING AT THE LOWER END OF THE TROUGH AND EXTENDING UPWARDLY TO THE SURFACE OF SAID HOUSING, A REFRACTING MEMBER LOCATED IN SAID WINDOW, SAID REFRACTING MEMBER INCLUDING TRAPEZOIDAL-SHAPED SIDE FLANGES, SAID REFRACTING MEMBER BEING ENGAGED WITH SAID HOUSING BY MEANS OF SAID FLANGES BEING LOCATED IN SIMILAR TRAPEZOIDAL-SHAPED CAVITIES IN SAID HOUSING, A SUPPORT PLATE ADJUSTABLY SECURED TO SAID HOUSING AND LOCATED UNDER THE BOTTOM OF SAID REFRACTING MEMBER, AND RESILIENT MEANS BETWEEN SAID SUPPORT PLATE AND SAID REFRACTING MEMBER, SAID SUPPORT PLATE RESILIENTLY SECURING SAID REFRACTING MEMBER WITHIN SAID HOUSING SO THAT IT IS EXPOSED TO SAID WINDOW, WHEREBY SAID SUPPORT PLATE AND SAID FLANGES ABSORB DOWNWARDLY DIRECTED OR TORSIONAL IMPACTS TO WHICH SAID REFRACTING MEMBER MAY BE SUBJECTED.
Claim 2
Dependent Claim
142 words
A RUNWAY LIGHTING UNIT INCLUDING A HOUSING HAVING A DOWNWARDLY TAPERING TROUGH IN A SURFACE THEREOF, A WINDOW FORMED IN SAID HOUSING AT THE LOWER END OF THE TROUGH AND EXTENDING UPWARDLY TO THE SURFACE OF SAID HOUSING, A REFRACTING MEMBER LOCATED IN SAID WINDOW, SAID REFRACTING MEMBER INCLUDING TRAPEZOIDAL-SHAPED SIDE FLANGES, SAID REFRACTING MEMBER BEING ENGAGED WITH SAID HOUSING BY MEANS OF SAID FLANGES BEING LOCATED IN SIMILAR TRAPEZOIDAL-SHAPED CAVITIES IN SAID HOUSING, A SUPPORT PLATE ADJUSTABLY SECURED TO SAID HOUSING AND LOCATED UNDER THE BOTTOM OF SAID REFRACTING MEMBER, AND RESILIENT MEANS BETWEEN SAID SUPPORT PLATE AND SAID REFRACTING MEMBER, SAID SUPPORT PLATE RESILIENTLY SECURING SAID REFRACTING MEMBER WITHIN SAID HOUSING SO THAT IT IS EXPOSED TO SAID WINDOW, WHEREBY SAID SUPPORT PLATE AND SAID FLANGES ABSORB DOWNWARDLY DIRECTED OR TORSIONAL IMPACTS TO WHICH SAID REFRACTING MEMBER MAY BE SUBJECTED.
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) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |