| PLAINSMAN MFG. INC. Patent applications |
| Patent application number | Title | Published |
|---|
| 20090097985 | CONTROL SYSTEM FOR RECIPROCATING DEVICE - A control system for a reciprocating device which includes a switching valve for directing fluid supply under pressure to one of two drive lines in an alternating manner, means for alternating the switching valve, and an exhaust circuit including and exhaust outlet, a first flow restrictor disposed between one drive line and the exhaust outlet, and a second flow restrictor disposed between the other drive line and the exhaust outlet. The system may include a selection valve for alternately connecting one of two drivelines to the exhaust outlet. | 04-16-2009 |
| 20090071323 | CONTROL SYSTEM FOR RECIPROCATING DEVICE - A control system for a reciprocating device includes a switching valve, a toggle for operating the valve, a trigger associated with the reciprocating device to actuate the toggle, and biasing means disposed on the trigger for applying a biasing force to the toggle. The valve includes a first drive line, a second drive line, a fluid supply inlet and a fluid exhaust outlet. The valve switches between the first and second drive lines upon actuation of the toggle by the trigger, to switch direction of the reciprocating device. | 03-19-2009 |
