Switching valve

Abstract

Abstract PURPOSE: To improve an operativity of an actuator by connecting a piping connected to an actuator through a change-over valve changed over when an operation lever is at its operable position to a puppet valve at its behind. CONSTITUTION: The rear portions of puppet valves 4a, 4b are connected to pipings 6a, 6b through change-over valves 17a, 17b changed when an operation lever 12 is moved to its operative position. Consequently, when a load is applied to an actuator and even when the operation lever 12 is finely moved, the actuator does not operate if the pressure in pipings 5a, 5b are not higher than these in the pipings 6a, 6b. Then the actuator does not operate if the operator does not want and an operativity can be improved. COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Eiki Izumi
• 👤 Hiroshi Watanabe
• 👤 Yukio Aoyanagi
• 👤 Kazuo Honma
• 👤 Yoshio Nakajima

Bibliographic Details