| 摘要 |
A time delay switch including a sealed housing divided into a pair of chambers by a flexible diaphragm. A reset orifice pin communicates the chambers with each other and includes a pair of openings in one of the chambers one of which has a flow restriction orifice therein and the other of which is operatively associated with a poppet assembly to be opened and closed by the latter. Switching means is responsive to the position of the diaphragm such that when the diaphragm has been urged upward to a first position by the poppet assembly the poppet is withdrawn from the reset orifice pin in response to movement of the switching means to allow the diaphragm to move to a second position. In the second position, the poppet assembly, in response to movement of the switching means, again acts against the reset orifice pin to move the diaphragm toward the first position at a delayed rate determined by the flow restriction orifice.
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