| 摘要 |
1,129,139. Valves. HUCK MFG. CO. 19 Oct., 1965 [4 Nov., 1964], No. 44317/65. Heading F2V. [Also in Division F1] A pilot valve 34 is opened by depression of a plunger 124 to direct compressed air from a passage 48 through a line 50 to a valve 46 having a slide 162 movable by the compressed air to a position in which communication is established between an air inlet duct 40 and an outlet duct 52, and when the valve 34 is closed, communication between the ducts 40, 52 is terminated only after the air trapped in the line 50 has bled away through an adjustable orifice 182. The slide 162 is returned by the pressure of air supplied from the inlet 40 acting on a shoulder on the slide which is disposed in an annular chamber 170 that at all times communicates the air inlet 40 to the passage 48. |
