US3576987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chemical lighting device to store, initiate and display chemical light
Assignee: Wyeth Holdings LLC
•
Filing: 1968-11-07
•
Granted: 1971-05-04
•
Expires: 1988-11-07
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 light unit, the device comprising an outer flexible, cylindrical, light transmitting container for one reactive composition, and an inner, rigid container for another reactive composition. Flexing the outer container breaks the inner container, allowing the reactive compositions to mix and produce a reaction providing chemiluminescent light which is visible through the outer light transmitting container.
Inventors
- 👤 Heinz Kurt Walter Voight
- 👤 Robert Lee Myers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:47
CPC Classifications
F; F21; F21L; F21L19/00; A; A62; A62B; A62B3/00; F21K; F21K2/00; F21K2/06; Y; Y10; Y10S; Y10S273/00; Y10S273/24
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
11 words
The device of claim 1 comprising a pair of concentric tubes.
Claim 2
Dependent Claim
15 words
The device of claim 1 wherein said inner tube means comprises more than one tube.
Claim 3
Dependent Claim
21 words
The device of claim 1 wherein the means for closing the outer tube means comprise plugs fitted to the ends thereof.
Claim 4
Dependent Claim
22 words
The device of claim 4 wherein said plugs are provided with recesses into which the ends of the inner tube means fit.
Claim 5
Dependent Claim
20 words
The device of claim 5 wherein said recesses comprise the closing means for the ends of the inner tube means.
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |