Patent US1785155A successfully refreshed from Google Patents.
US4634293A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Battlefield environment thermal analyzer
Assignee: United States Department of the Army
•
Filing: 1981-05-08
•
Granted: 1987-01-06
•
Expires: 2001-05-08
Abstract
Abstract A method and apparatus for simulating thermal images of various target dees and backgrounds as they would appear when viewed with a thermal viewer. A number of test elements of varying thicknesses are arranged in such a manner that upon solar heating the thermal signature thereof will represent the particular target for which the elements have been arranged, thereby eliminating the need for having to physically pursue the acquisition of the actual target for test purposes.
Inventors
- 👤 John A. D'Agostino
- 👤 Thomas J. Lillie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:02
CPC Classifications
G; G09; G09B; G09B9/00; G09B9/003
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
The method of synthesizing the thermal signature of a target and background as seen through a thermal viewer comprising the steps of: mounting a series of test elements having equal exposed surfaces, but different temperatures vs. time characteristics, when exposed to the same thermal radiation source, on a low heat capacity support member; exposing said test elements simultaneously to at least a 24 hour variation of insolation at a plurality of widely separated geographical locations at different times of the year; independently measuring the temperature vs. time characterstic of each test element; and correlating said test elements by composition and thickness to exposed surface areas of the target and background to construct a temperature as time signature of the two in combination.
Claim 2
Independent Claim
122 words
The method of synthesizing the thermal signature of a target and background as seen through a thermal viewer comprising the steps of: mounting a series of test elements having equal exposed surfaces, but different temperatures vs. time characteristics, when exposed to the same thermal radiation source, on a low heat capacity support member; exposing said test elements simultaneously to at least a 24 hour variation of insolation at a plurality of widely separated geographical locations at different times of the year; independently measuring the temperature vs. time characterstic of each test element; and correlating said test elements by composition and thickness to exposed surface areas of the target and background to construct a temperature as time signature of the two in combination.
Claim 3
Dependent Claim
45 words
The method according to claim 1 further including the steps of: coating a number of said test elements with a material different from that of which each element is composed; and correlating such coated test elements with coated surface portions of said target and background.
References Cited (Backward Citations)
US2685795A
Cited
US3531991A
Cited
US3596519A
Cited
US3685343A
Cited
US3690175A
Cited
US3964313A
Cited
DE2455966A1
Cited
US3981175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-01-05 | 1990-07-07 | 1991-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-05 | 1994-07-07 | 1995-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-05 | 1998-07-07 | 1999-01-06 | $7700.00 | Window Closed / Lapsed |