F - Mech Eng,Light,Heat,Weapons – 04 – B
Patent
F - Mech Eng,Light,Heat,Weapons
04
B
103/142, 138/74.
F04B 9/00 (2006.01) F04B 9/105 (2006.01) F04B 9/107 (2006.01) F04B 47/08 (2006.01)
Patent
CA 1334812
A liquid transfer device of the type having a fluid driven linear actuator including a reciprocating output drive member and driven from a double acting cylinder having a pair of fluid ports; a power source providing a fluid flow through an outlet port; and a control device for controlling the rate of fluid flow alternately to and from said fluid ports to thereby control the velocity of travel of the output member. The control device has a valve provided with an inlet port in fluid communication with the outlet port of the power source, a pair of ports in fluid communication one each with the cylinder ports; and an exhaust port. A valve element is disposed in the valve movable between two extreme positions for controlling the rate of flow of fluid flow alternatively from the outlet port of the power source to each of the cylinder ports and from the cylinder ports to the exhaust port, and a control element is provided for cycling the position of the valve element between the extreme positions.
615238
Na
Qsine Corporation Limited
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