Gas-operated timing demolition delay

A time delay apparatus for providing a firing action at the end of a predetermined time-delay period, comprising:

• means for providing a source of fluid under pressure;
• a fluid-receiving chamber contained by the time delay apparatus for accumulating the fluid when released from the source;
• a flow controller connected between the source and the fluid-receiving chamber for providing fluid communication between the source and the fluid-receiving chamber;
• means for initiating the flow of fluid from the source through the flow controller and into the fluid-receiving chamber, comprising a valve assembly including a piercing element for piercing the source for releasing the fluid for flow through the communication upon triggering of the means for initiating the flow of fluid from the source;
• and
• a pressure-responsive actuator in communication with the fluid-receiving chamber for being actuated when a predetermined pressure has built up in the fluid-receiving chamber at the end of the predetermined time-delay period.