Accession Number : ADD001034

Title :   Extended Duration Fluidic Time Delay Device.

Descriptive Note : Patent,


Personal Author(s) : Drzewiecki,Tadeusz M ; Goto,John M

Report Date : 23 Oct 1973

Pagination or Media Count : 4

Abstract : The patent relates to a device whereby a fluidic time delay device of long duration is provided by the use of two coacting fluids contained in two chambers separated by an intermediate displacable membrane or piston. The first chamber contains a first fluid consisting of carbon dioxide gas disposed in a pressurized cartridge. The second chamber contains a second fluid consisting of a highly viscous liquid. The first chamber is closed at one end by a screwon cap provided with means for puncturing the carbon dioxide cartridge as the cap is screwed into place and the second chamber is connected to a capillary tube through which the highly viscous liquid is expelled as the pressure from the carbon dioxide gas forces the intermediate membrane to be displaced across said second chamber. The device can be used to activate an ordnance device.

Descriptors :   *Time delay fuzes, *Fluidic control, *Patents, Fluid control, Capillary tubes, Gas cylinders, Flow rate

Subject Categories : Fluidics and Fluerics
      Ammunition and Explosives

Distribution Statement : APPROVED FOR PUBLIC RELEASE