• All sections
• F - Mechanical engineeringlightingheatingweaponsblasting
• F16K - Valvestapscocksactuating-floatsdevices for venting or aerating
• F16K 31/385 - Operating meansReleasing devices actuated by fluid in which fluid from the conduit is constantly supplied to the fluid motor in which the fluid works directly on both sides of the fluid motor, one side being connected by means of a restricted passage and the motor being actuated by operating a discharge from that side the fluid acting on a diaphragm

Patent holdings for IPC class F16K 31/385

Total number of patents in this class: 131

10-year publication summary

Principal owners for this class