US3609336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compass light
Assignee: Beecham Group PLC
•
Filing: 1970-04-22
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Granted: 1971-09-28
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Expires: 1990-04-22
Abstract
Abstract Means are provided in cooperative association with a transparent compass dome for illuminating the compass card mounted for rotation in a compass bowl.
Inventors
- 👤 Albert Coppola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:55
CPC Classifications
G; G01; G01D; G01D11/00; G01D11/28; G01F; G01F23/00; G01F23/14; G01F23/16
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
95 words
Means for illuminating a compass card mounted for movement within a hemispherical compass dome, the dome having a flange extending horizontally above its equator, the illuminating means comprising an arcuate housing mounted on the compass flange and fitting snugly against the dome, the housing including a depending flange portion provided centrally thereof and fitting against the dome, and an electric light bulb mounted on the depending flange portion of the arcuate housing on each side thereof between the flange portion and an end of the arcuate housing for illuminating the compass card in the bowl.
Claim 2
Dependent Claim
95 words
Means for illuminating a compass card mounted for movement within a hemispherical compass dome, the dome having a flange extending horizontally above its equator, the illuminating means comprising an arcuate housing mounted on the compass flange and fitting snugly against the dome, the housing including a depending flange portion provided centrally thereof and fitting against the dome, and an electric light bulb mounted on the depending flange portion of the arcuate housing on each side thereof between the flange portion and an end of the arcuate housing for illuminating the compass card in the bowl.
Claim 3
Dependent Claim
23 words
A device as in claim 1 wherein the arcuate housing extends over a distance approximating a third of the diameter of the dome.
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) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |