TIME-CONTROL CIRCUIT FOR PNEUMATICALLY OPERABLE DEVICES

摘要

A timing control circuit for a pneumatically-operable device, which is manually actuable to provide fluid flow to a reservoir through a fluid-flow rate-controlling valve to a reservoir and a line-pressure-operable, normally-open valve in the primary fluid flow line. The pressure operable valve is closed at a sensed line pressure in the reservoir to interrupt fluid flow to said tool to terminate an operating cycle.