The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 1988
Filed:
Nov. 16, 1986
David W Sickenberger, Baltimore, MD (US);
Richard P Marcou, Bel Air, MD (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
A method of detecting leaks within artillery shells, bombs and other munitions is disclosed which involves the permanent in situ insertion within the munition cavity of an electrically resistive surface which varies in resistance with the adsorption thereon of leaking chemical vapors. In a typical embodiment of the invention, the electrically resistive surface is serially connected with an identical surface with an inert coating and the voltage drops across both the coated and uncoated surfaces are measured. Thereby, any changes in the resistance of the exposed surface due to factors other than adsorption thereon of leaking gases, e.g., temperature changes, are appropriately offset.