| 摘要 |
<p>A delivery control device, intended to allow the control of the supply to several hydraulic apparatuses to achieve activation of these individually or in various combinations, including a pair of shutter plates, one fixed and one moveable, of which the fixed shutter plate offers a central inlet passage aperture and several peripheral delivery passage apertures, each of these having essentially the form of a sector of a circle and all of them together occupying no more than one third of the circle of the peripheral region of the fixed shutter plate, while the moveable shutter plate offers a central inlet passage aperture, a single peripheral delivery passage aperture, of a form which essentially corresponds to that of one of the delivery passage apertures of the fixed shutter plate and, in a position at least approximately diametrically opposite to this single delivery passage aperture, a collective delivery passage aperture of a form which essentially corresponds to the whole form of two or more delivery passage apertures adjacent to the fixed shutter plate.</p> |
