| 摘要 |
<p>A timing device includes a timing means which effects movement of a motion transmitting member at a selected rate to establish a timed interval of selected duration, upon expiration of which interval a fluid signal is provided at a given point in a fluid circuit. The timing device is actuated by a fluid actuator which utilizes diaphragms with flexible portions to eliminate dynamic seals. Means is provided for enabling actuation of the timing device in response to a relatively short-term activating pulse.</p> |
