US4272768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-purpose survival canteen
Assignee: Individual
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Filing: 1980-01-21
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Granted: 1981-06-09
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Expires: 2000-01-21
Abstract
Abstract A survival canteen is disclosed which has a substantially microwave transparent vessel for holding liquid. The vessel has internal microwave-reflective baffles which divide the vessel into chambers. Openings between the chambers allow damped fluid flow therebetween. The baffles are positioned to define at least one corner reflector so as to provide a highly reflective radar target.
Inventors
- 👤 Johnnie P. Rookard, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:44
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/44; H01Q15/00; H01Q15/14; H01Q15/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
A survival canteen comprising: a substantially microwave transparent vessel for holding liquid, having a sealable mouth; said vessel having internal microwave reflective baffles dividing the vessel into chambers and openings between the chambers to allow damped fluid flow therebetween; and said baffles positioned to define at least one corner reflector.
Claim 2
Dependent Claim
50 words
A survival canteen comprising: a substantially microwave transparent vessel for holding liquid, having a sealable mouth; said vessel having internal microwave reflective baffles dividing the vessel into chambers and openings between the chambers to allow damped fluid flow therebetween; and said baffles positioned to define at least one corner reflector.
Claim 3
Dependent Claim
14 words
The canteen of claim 1, said vessel surrounded by microwave transparent thermal insulating material.
Claim 4
Dependent Claim
21 words
The canteen of claim 2, said material having density and volume sufficient to maintain the vessel buoyant when filled with liquid.
Claim 5
Dependent Claim
35 words
The canteen of claim 1, said openings being sufficient in size and number to dampen sloshing of liquid between chambers while allowing liquid to be drained through said mouth at a rate suitable for drinking.
Claim 6
Dependent Claim
23 words
The canteen of claim 1, and an externally viewable thermometer adapted to measure and display the temperature of the fluid within said vessel.
Claim 7
Dependent Claim
16 words
The canteen of claim 1, said baffles having stainless steel composition and defining eight corner reflectors.
Claim 8
Dependent Claim
15 words
The canteen of claim 1, said baffles having aluminum composition and defining eight corner reflectors.
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) | 1984-06-08 | 1984-12-08 | 1985-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-08 | 1988-12-08 | 1989-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-08 | 1992-12-08 | 1993-06-09 | $7700.00 | Window Closed / Lapsed |