| 摘要 |
<p>754,091. Fluid pressure brakes. GOODYEAR TIRE & RUBBER CO. Dec. 7, 1954 [Feb. 15, 1954], No. 35384/54. Class 103 (1). [Also in Group XXIX] A relay valve for controlling fluid pressureoperated brakes, particularly for aircraft, may be operated hydraulically by pressure from master cylinders applied at connections 4, 5, 8 and 9 so as to act upon either pistons 10 or 11, and move pull rod 13 and lever 25, pivoted at 33, to the right or mechanical operation may be carried out by movement of rod 65, Fig. 1, to the right so as, through a slide block 21 and connecting plates 24, to also operate levers 25 of which, as shown in Fig. 3, there may be four arranged side by side. Levers 25 act through a plunger 34 and spring 43 upon a sleeve 61 to first close a poppet valve 60 to cut off communication, between a bore 58 in valve plunger 52 and a fluid return port 64 and then to lift valve head. 53 off its seat so as to allow fluid pressure from inlet connection 49 to pass through chamber 59 and connection 45 to operate the brakes. Since fluid pressure in chamber 59 may act through bore 58 upon valve 60 and sleeve 61 to compress springs 43 and 44, the valve mechanism will have a self-lapping characteristic.</p> |
