US3875602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating device and marker system
Assignee: Wyeth Holdings LLC
•
Filing: 1973-01-12
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Granted: 1975-04-08
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Expires: 1993-01-12
Abstract
Abstract A device for providing chemiluminescent light from a chemical reaction of suitable compounds in the presence of a fluorescent compound, the device being a self-contained buoyant light unit.
Inventors
- 👤 Roy Richardson Hurlbut Miron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:35
CPC Classifications
F; F21; F21K; F21K2/00; F21K2/06; F21L; F21L19/00; F21W; F21W2111/00; F21W2111/04; F21W2111/047
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
74 words
A light marker device adapted to float on a liquid surface comprising a weighted buoyant float and a tubular member containing chemical means for producing light, the tubular member having an extension, the said float having a socket-like receptacle therein with a provision thereon adapted for receiving and removably engaging the tubular chemical light producing means, the tubular member extension having an opening to engage the protrusion in the socket-like receptacle of the float.
Claim 2
Dependent Claim
74 words
A light marker device adapted to float on a liquid surface comprising a weighted buoyant float and a tubular member containing chemical means for producing light, the tubular member having an extension, the said float having a socket-like receptacle therein with a provision thereon adapted for receiving and removably engaging the tubular chemical light producing means, the tubular member extension having an opening to engage the protrusion in the socket-like receptacle of the float.
Claim 3
Dependent Claim
23 words
The device of claim 1 where the float has means for varying the buoyancy through the addition or removal of a ballast material.
Claim 4
Dependent Claim
72 words
A light marker device as in claim 1, said tubular member comprising a tubular chemiluminescent light stick, said light stick comprising an outer flexible, light transmitting means and an inner rigid, breakable tube means, substantially coextensive with said outer tube means, a chemiluminescent component in each said tube means, means to close said tube ends, and means to maintain said inner tube means relatively fixed with respect to said outer tube means.
Claim 5
Dependent Claim
11 words
The device of claim 3 comprising a pair of concentric tubes.
Claim 6
Dependent Claim
15 words
The device of claim 3 wherein said inner tube means comprises more than one tube.
Claim 7
Dependent Claim
17 words
The device of claim 3 wherein said buoyant member comprises a reflective material adjacent said light stick.
References Cited (Backward Citations)
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |