Method and apparatus for detection of liquid incendiaries by changes in capacitance
AssigneeHer Majesty the Queen in right of Canada, as represented by The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and Northern Ireland
InventorsJohn D. Burrows, Kenneth R. Mann
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Abstract
A device fop detecting liquid incendiaries contained in bottles comprises a flexible cradle, such as a sling of thin rubber sheet (2), mounted between two supports (4); two conductors arranged laterally on the cradle (6), each conductor having a large surface area to thickness ratio; and an electrical circuit including a power source and indication means to provide an indication of the dielectric properties of a bottle placed within the cradle.
Claims15
A device for detecting liquid incendiaries contained in a bottle, said device comprising:
- a flexible cradle mounted between two supports, said cradle supporting said bottle,
- two conductors arranged laterally on the cradle to form a capacitor,
- an electrical circuit comprising an alternating current power source applied to said conductors whereby a signal is developed with a strength proportional to capacitance of said capacitor, and
- indication means responsive to the strength of the signal in the circuit.
A method of detecting a liquid incendiary contained in a bottle comprising the steps of:
- arranging two conductors laterally on a flexible cradle mounted between two supports, said conductors forming a capacitor;
- connecting the capacitor into an electrical circuit comprising an alternating current power source and indication means responsive to the strength of the signal developed across the capacitor;
- placing a bottle containing liquid within the cradle;
- activating the power source to apply an alternating current to the circuit;
- and
- observing the response of the indication means so as to obtain an indication of capacitance of the capacitor and thus the dielectric properties of the bottle.
Dependencies are inferred from the claim text.