| 摘要 |
<p>1280873 Valves MONOGRAM INDUSTRIES Inc 12 June 1969 [14 June 1968] 9408/72 Divided out of 1280872 Heading F2V The subject matter of the Specification is a manually-operable valve as shown in Fig. 7 of the drawings accompanying the Specification 1,280,872, such valve being of the kind having a valve spool which is monostable in its exhaust position and is held in admission position by a permanent magnet for a time determined by a restriction communicating the valve outlet with a control chamber housing a control piston for returning the valve spool when pressure in the control chamber has risen sufficiently for the force acting on the piston to overcome the magnetic holding force of the magnet.</p> |
